US3760538A - Sanding apparatus - Google Patents

Sanding apparatus Download PDF

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Publication number
US3760538A
US3760538A US00200005A US3760538DA US3760538A US 3760538 A US3760538 A US 3760538A US 00200005 A US00200005 A US 00200005A US 3760538D A US3760538D A US 3760538DA US 3760538 A US3760538 A US 3760538A
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sanding
settling chamber
dust settling
cabinet
dust
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US00200005A
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K Solheim
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Karsten Manufacturing Corp
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K Solheim
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Assigned to KARSTEN MANUFACTURING CORPORATION, A CORP. OF AZ reassignment KARSTEN MANUFACTURING CORPORATION, A CORP. OF AZ CONDITIONAL ASSIGNMENT (SEE DOCUMENT FOR DETAILS). Assignors: SOLHEIM, KARSTEN AND SOLHEIM, LOUISE C.
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/06—Dust extraction equipment on grinding or polishing machines

Definitions

  • ABSTRACT A sanding apparatus includes a multipanel thin-wall cabinet in the interior of which is formed a dust-settling chamber and the sides of which provide supporting structure for at least one enclosed sander assembly.
  • An air passage is formed between the dust-settling chamber and the sander assembly so that exhaust air coupled to the dust-settling chamber will draw the sanding dust from the sander assembly into the settling chamber.
  • Heavy duty or industrial type sanding equipment normally includes a belt-sander, a dust-settling device, an air filter mechanism and a source of negative air pressure. These installations are designed so that sanding dust is removed from the belt sander and routed through vacuum ducts to the remotely located dustsettling device. All but very fine particles of the sanding dust are collected within the settling device, with the remaining dust particles being removed by routing the exhaust from the settling device to suitable air filtering mechanisms.
  • prior art belt sanders are fabricated with heavy bases upon which beam type super structures are provided for supporting the wheels, belt and associated drive mechanisms. Some of the prior art belt sanders make little or no provisions for enclosing the belt or removing the sanding dust from the proximity of the machine or its operator.
  • belt guards either cast or formed of sheet matal are provided for safety purposes and may incorporate vacuum duct work for removing the sanding dust and routing it to a remotely located dust settling device.
  • One particular prior art belt sander is formed with a pedestal type base enclosure having a belt guard assembly extending angularly upwardly therefrom. Both the base and the belt guard are formed of heavy castings.
  • This apparatus is driven by an electric motor positioned on the base and extending into the base enclosure to power a drive wheel.
  • An endless sanding belt passes over the drive wheel and over a contact wheel rotatably journalled in the uppermost end of the belt guard.
  • An access opening is formed in the belt guard adjacent to the contact wheel to permit application of a workpiece to the belt.
  • a remote vacuum source is connected to the base enclosure so that air will flow into the apparatus through the access opening, and will pass down through the belt guard and out of the base enclosure to a remote dust-settling device.
  • the prior art belt sanders are single work station devices.
  • a vacuum duct from each of a plurality of sanders to a common manifold.
  • the manifold is in turn connected to a remotely located dust-settling device. This arrangement results in a maze of vacuum ducts and necessitates one or more separate settling devices.
  • the sanding apparatus of the present invention comprises a multipanel thinwall housing or cabinet, the interior of which forms an integral dust-settling chamber.
  • the side walls of the cabinet provide supporting structure for at least one enclosed belt sander assembly.
  • the electric motor and other necessary electric equipment may be located either within the housing above the dust settling chamber or in an isolated compartment below the dust settling chamber.
  • Exhaust air may be provided by a suitable vacuum motor mounted on the sanding apparatus or may be coupled from a remote source to the dust settling chamber which is provided with an air passage communicating with the enclosed belt sander assembly Thus air flow is directed inwardly into the belt sander assembly through a workpiece access opening formed therein, through the air passage into the dust settling chamber.
  • Another object of the present invention is to provide a new and useful sanding apparatus the supporting structure of which is of thin-wall construction.
  • Another object of the present invention is to provide a new and useful sanding apparatus having a large integrally formed dust settling chamber.
  • Another object of the present invention is to provide a new and useful sanding apparatus in which a thin wall cabinet houses a dust settling chamber and provides supporting structure for at least one belt sander assembly.
  • Another object of the present invention is to provide a new and useful sanding apparatus upon which a plurality of belt sanding assemblies are mounted on a common support structure having an integral dust settling chamber formed therein.
  • Another object of the present invention is to provide a new and useful sanding apparatus in which the electrical equipment is located in a substantially dust-free location.
  • Another object of the present invention is to provide a new and useful sanding apparatus in which a thin wall cabinet houses a dust settling chamber and provides supporting structure for at least one sanding assembly and drive means therefor.
  • the sanding apparatus may also include a filter assembly and vacuum supplying means to form a completely self-contained apparatus.
  • Still another object of the present invention is to provide a new and useful sanding apparatus which may be shipped or stored in flat light-weight containers and may be easily assembled with a minimum amount of tooling.
  • FIG. 1 is an isometric view of the sanding apparatus of the present invention incorporating the various features thereof;
  • FIG. 2 is a fragmentary sectional view taken on the line 2-2 of FIG. 1;
  • FIG. 3 is an enlarged fragmentary sectional view taken on the line 3-3 of FIG. 1;
  • FIG. 4 is a fragmentary sectional view taken on the line 4-4 of FIG. 3;
  • FIG. 5 is a fragmentary sectional view taken on the line 5-5 of FIG. 3;
  • FIG. 6 is a plan view of a modified form of the sanding apparatus illustrated in FIG. 1;
  • FIG. 7 is a plan view of another modified form of the sanding apparatus illustrated in FIG. 1;
  • FIG. 8 is a plan view partially broken away to illustrate the features of another embodiment of the sander apparatus of the present invention.
  • FIG. 9 is a side elevation partially broken away of the sander apparatus of the embodiment illustrated in FIG.
  • FIG. 10 is a fragmentary front elevation taken on the line 10-10 of FIG. 9;
  • FIG. 11 is a fragmentary rear elevation, partially broken away, taken on the line 11-11 of FIG. 9,
  • FIG. 12 is an enlarged fragmentary sectional view of the sanding apparatus shown in FIGS. l-7 illustrating a vacuum supplying means and filter assembly mounted thereon;
  • FIG. 13 is an enlarged fragmentary sectional view of the sanding apparatus shown in FIGS. 8-11 illustrating a vacuum supplying means and filter assembly mounted thereon.
  • FIG. 1 illustrates one form of a sanding apparatus of the present invention which is indicated generally by the reference numeral 15.
  • the sanding apparatus 15 has a cabinet 16 to which a plurality of sander assemblies 17 may be attached.
  • the cabinet 16 is a multipanel housing which may be fabricated of sheet metal, or other suitable materials, to form a thin-wall structure.
  • the cabinet 16 is shown as a six-sided, box-shaped geometric figure having four vertical and two horizontal panels.
  • the inherent structural rigidity of this type of structure is well known in the art.
  • other geometric forms may be employed to suit particular requirements. Examples of other forms of construction may include a five-panel structure, seven-panel structure or any multipanel structure.
  • the cabinet 16 has four spaced apart upstanding rectangular walls 18 which are attached to each other to form an endless wall assembly.
  • Each of the walls 18 are provided with a flange 21 at its lower end so that the sanding apparatus 15 may be leveled and attached to a floor surface in an appropriate manner.
  • flanges 21 could be replaced with legs (not shown) or any other suitable support and leveling device.
  • a substantially horizontal upper shelf 22 is attached at its peripheral edges 23 to the upper ends 24 of the walls 18 such as by sheet metal screws, bolts or the like.
  • a substantially horizontally disposed lower shelf 28, best seen in FIGS. 1 and 2, is attached at its peripheral edges 29 to the walls 18 in the same manner as the upper shelf 22.
  • the area enclosed between the upper shelf 22, the lower shelf 28 and the walls 18 is defined as a dust settling or collecting chamber 30.
  • the upper shelf 22 is provided with a suitable coupling flange 34 to which one end of an air duct 35 is connected.
  • the air duct 35 is connected at its other end to a remotely located high velocity vacuum device (not shown).
  • a filter assembly 36 may be provided within the dust settling chamber 30 for filtering the exhaust air as will hereinafter be described in detail.
  • the air and any dust particles exhausted from the chamber 30 may be routed through additional external filtering apparatus (not shown).
  • the sanding apparatus 15 is provided with a door 37 adjacent to the lower shelf 28 to permit access to the settling chamber 30 so that the settled sanding dust may be periodically removed.
  • each enclosed sander assembly 17 is provided, each being attached to a different one of the side walls 18 of the cabinet 16.
  • the assemblies 17 are identical structures therefore only one will now be described.
  • the sander assembly 17 is provided with a housing 40 or enclosing means having a vertically disposed inwardly positioned base wall 41 which is mounted adjacent to and in contiguous contact with the outwardly disposed surface of the wall 18 and is maintained in this position by bolts or other suitable mounting devices.
  • the housing 40 is provided with an upper end wall 42, a lower end wall 43, a rear end wall 44 and a front end wall 45.
  • the walls 42-45 are spaced apart with respect to each other, are normal to the base wall 41 and extend outwardly therefrom to form the housing 40 into a box-shaped structure.
  • Each of the walls 42-45 are provided with an inwardly disposed lip 46 formed on their respective outermost extending edges to which a suitable air sealing gasket 47 is secured.
  • a door 48 is mounted on the housing 40 by a hinge 50 which is appropriately secured to the rear wall 44.
  • the door 48 is suitably reinforced to provide a rigid structure which sealingly engages the gasket 47 when the door 48 is held in the closed position by a closing handle 51 (FIG. 1).
  • An access opening 54 is formed in the housing 40 adjacent to the corner formed by the junction of the front wall 45 with the lower wall 43.
  • the opening 54 is formed by eliminating a portion of the lower wall 43 and providing a notch 55 in the base wall 41 (FIG. 3) and a similar notch 56 in the door 48 (FIG. 1).
  • the opening 54 exposes a portion of a sanding mechanism 60, to be hereinafter described, so that a workpiece may be applied thereto.
  • the base wall 41 is provided with an exhaust opening 58 which is adjacent to a similar aperture 59 formed in the wall 18 of the cabinet 16 thus providing an air passage communicating therethrough.
  • exhaust air movement caused by the vacuum applied to the settling chamber 30 results in an air path inwardly directed through the access opening 54 and through the apertures 58 and 59 and into the chamber 30.
  • the sanding mechanism 60 is mounted within the housing 40.
  • the mechanism 60 includes a drive wheel 61, an adjustable wheel 62, an idler or contact wheel 63 and an endless sanding belt 64.
  • sanding mechanism 60 may be modified to suit particular requirements and such modifications could include a two-wheel or multiwheel arrangement to accommodate shorter or longer belt lengths.
  • the drive wheel 61 is coupled through an aperture 66 formed in the base wall 41 of the housing 40 to an electric motor 68 or drive means.
  • the motor 68 is mounted on the upper shelf 22 of the cabinet 16.
  • the shelf 22 is provided with a plurality of elongated inverted hat-shaped in cross section structural braces 69 secured to the lower surface thereof.
  • the braces 69 reinforce the upper shelf 22 to form a rigid mounting surface for supporting a plurality of the motors 68, a separate motor 68 is provided for each of the sanding assemblies 17.
  • the motors 68 and the other necessary electric equipment (not shown) mounted on the upper shelf 22 are surrounded by the upstanding portions of the housings 40, thus locating the electric equipment of the sanding apparatus in a substantially dust-free area.
  • the endless sanding belt 64 is driven in a counterclockwise direction by the drive wheel 61, as indicated by an arrow 70 in FIG. 3.
  • the belt 64 passes over the adjusting wheel 62 and the contact wheel 63.
  • the contact wheel 63 is rotatably journaled on a trunion 72 which is suitably mounted on the base wall 41 adjacent to the access opening 54 of the housing 40.
  • the adjusting wheel 62 is rotatably mounted on a trunion 75 carried on an adjusting device 76 which provides means for adjusting belt tension and tracking path.
  • the adjusting device 76 includes an L-shaped bracket 77 fixedly secured to the base wall 41 of the housing 40 such as by bolts 78.
  • a swing plate 79 is pivotably suspended by a pivot pin 80 from the bracket 77.
  • the plate 79 is also secured to the base wall 41 of the'housing 40 by screws 81 positioned in diagonally opposed corners of the plate 79.
  • the screws 81 are employed to initially longitudinally align the plate 79 and are each provided with a spring 82 so that the plate 79 may be pivotably moved about the pivot pin 80 by an adjusting knob 83, the threaded shank 84 of which bears against the plate 79. It should be readily apparent that movement of the knob causes pivotable movement of the plate 79 about the pivot pin 80 which is limited'to a small arcuate movement by the springs 82. However, small movements of the plate 79 are all that is needed to adjust the longitudinal axis of the trunion about which the wheel 62 revolves. These small changes in the disposition of the trunions 75 permit adjustment of the tracking path of the belt 64 over the wheels 61, 62 and 63.
  • the tension applied to the belt 64 is accomplished by l the same adjusting device 76.
  • the tensioning is accomplished by an elongated arm 86 which carries the trunion 75 on one end thereof and is pivotably attached on its other end by a pivot pin 87 to the plate 79.
  • Arcuate movement of the arm 86 and thus the wheel 62 in the direction of an arrow 88 (FIG. 3) applies tension to the belt 64, and movement of the arm 86 and wheel 62 in the opposite direction relieves the tension.
  • the arm 86 is biased in the tension applying direction by a compression spring 90.
  • One end of the spring 90 contacts a lower surface of the arm 86 and the other end is retained upon a spring keeper 91.
  • the keeper 91 is carried on a shank 92 of an adjusting knob 93 which is threadably adjustable in an L-shaped bracket 94 dependingly attached to the plate 79.
  • a scoop 98 is attached to the cabinet 16 such as by screws.
  • the scoop is provided with an upwardly disposed opening 100 which directs the dust downwardly and into the settling chamber 30 through an opening 101 (FIG. 2) formed in the wall 18 thereof.
  • the scoop is provided with an inclined surface 102 which is formed into a substantially horizontally disposed bottom 103 adjacent to the opening 101.
  • the bottom 103 is provided to catch any foreign material which may accidentally drop into the scoop 98.
  • FIG. 1 The hereinbefore described sanding apparatus 15 which is seen best in FIG. 1 is shown as having four individually operable sander assemblies 17 mounted thereon to provide four separate work stations.
  • FIG. 6 illustrates a sanding apparatus 15a which is provided with two sander assemblies 17 to form a two-work station apparatus.
  • FIG. 7 illustrates a single work station sanding apparatus 15b.
  • the cabinets, settling chambers and sander assemblies of the sanding apparatuses 15a and 15b are fabricated by employing the same basic techniques and operating mechanisms as previously described for the apparatus 15.
  • FIGS. 8-11 wherein a modified sanding apparatus of the present invention is indicated generally by the reference numeral 115.
  • the sanding apparatus is best suited to provide a low profile two-work station machine which employs the same basic components and construction methods as the previously described sanding apparatus 15. It will be noted that some rearranging of components was needed to best meet the requirements of this particular application.
  • the sanding apparatus 115 has a cabinet 116 which provides supporting structure for a pair of sander assemblies 117.
  • the cabinet 1 16 is a multipanel housing fabricated of thin wall materials to provide an endless wall assembly having a pair of spaced apart side walls 118, a front panel 119, a rear panel 120, a base panel 121 and a top panel 123.
  • An upper shelf 122 and a lower shelf 128 are mounted within the cabinet 116.
  • the upper and lower shelves 122 and 128 respectively are spacedly arranged to provide a dust settling chamber 130.
  • a coupling flange 134 is provided in the rear panel 120 to which an air duct 135 is connected.
  • a filter assembly 136 may be provided within the dust settling chamber 130 as will hereinafter be described in detail.
  • a high velocity vacuum device (not shown) is coupled to the settling chamber 130 which causes it to function in the same manner as the hereinbefore described settling chamber 30.
  • a clean-out door 137 is provided for removing sanding dust from the settling chamber 130.
  • a pair of sander assemblies 117 are provided, each being positioned adjacent to a different one of the side walls 118.
  • the sander assemblies 117 are identical to each other, therefore only one will now be described.
  • the cabinet 116 is provided with a cavity 140 or enclosing means formed therein which is laterally disposed with respect to the dust settling chamber 130, and is separated therefrom by the wall 118 which serves as a divider panel. Therefore, it may be seen that the cavity 140 serves the same purpose in the apparatus 115 as housing 40 does in the apparatus 15.
  • the wall or divider panel 118 is recessed so that the front panel 119 and the rear panel 120 extend beyond the wall 118 to provide a rear extending end 144 and a front extending end 145 which form the front and rear enclosing structure for the cavity 140.
  • the base panel 121 encloses the bottom of the cabinet 116 and extends beyond the divider panel 118 to form an extending end 143 for enclosing the bottom of cavity 140.
  • the top panel 123 is positioned to enclose the top of the cabinet 116 and provide an extending end 142 for enclosing the top of the cavity 140.
  • the top panel 123 is provided with an access lid 149.
  • a suitably reinforced door 148 is mounted on a hinge 150 to sealingly enclose the cavity 140 in the manner hereinbefore described for door 48 of the housing 40.
  • the base panel 121 and top panel 123 extend across the entire width of the sanding apparatus 115.
  • a lower isolated electric equipment compartment 152 is formed below the settling chamber 130, and an upper isolated electric equipment compartment 153 is provided above the settling chamber 130.
  • the upper and lower compartments 152 and 153 are at ambient pressure so that migration of the sanding dust from the negatively pressurized sanding assemblies 117 and settling chamber 130 will not occur due to the pressure differential.
  • An access opening 154 is provided in the upper end of the front extending end 145 to expose a portion of a sanding mechanism 160, to hereinafter be described in detail, so that a workpiece may be applied thereto.
  • the wall or divider panel 118 is provided with at least one aperture or exhaust opening 158 formed therein which provides an air passage that communicates between the cavity 140 and the settling chamber 130.
  • the exhaust air path through the apparatus 115 will therefore be inwardly through the access opening 154 into the cavity and through the aperture 158 into the settling chamber 130.
  • the sanding mechanism 160 is similar to the previously described sanding mechanism 60, and includes a drive wheel 161, an adjustable wheel 162, a contact wheel 163 and an endless sanding belt 164.
  • the drive wheel 161 is driven by a double ended electric motor 168 or other suitable drive means located in the isolated compartment 152 below the settling chamber 130. It should be noted that the motor 168 could have been mounted within the upper compartment 153 without affecting the stability of the apparatus 115 due to the inherent structural rigidity of the cabinet 116.
  • the adjustable wheel 162 is carried on an adjusting device 176 which may be identical to the previously described adjusting device 76, and will therefore not be described again.
  • the contact wheel 163 is mounted externally of the cabinet 116 on a hat-shaped in cross section brace 171 appropriately secured to the front of the cabinet.
  • the brace 171 carries a trunion mount assembly 172 upon which the contact wheel 163 is rotatably journaled.
  • the belt 164 is driven in the direction of an arrow (FIG. 9) therefore directing the sanding dust downwardly into a scoop 98 located below the contact wheel 163.
  • the brace 171 is provided with laterally extending shield portions 173 to protect an operator from any sanding dust which may be carried outwardly by the belt 164.
  • a centrally located portion of the brace 171 between the trunion mounts 172 may be employed to mount a stop-start switch 174 or other control devices as desired.
  • FIG. 11 A modified mounting assembly 199 upon which the apparatus 115 may be secured to the floor is shown in FIG. 11.
  • FIGS. 12 and 13 wherein the sanding apparatuses 15 and 115 are each shown with a vacuum supplying means 200 and 230 respectively to illustrate these apparatuses as self-contained units.
  • FIG. 12 shows the coupling flange 34 formed in the upper shelf 22 of the sanding apparatus 15 as having the vacuum supplying means 200 mounted thereon.
  • the vacuum supplying means 200 is shown as a centrifugal blower having an outlet 202 to which an external filter bag 204 is secured such as by a clamp 206. If further filtering of the exhaust air is desired, an exhaust duct (not shown) could be connected to the outlet 202 for routing the exhaust to remote filtering devices (not shown). Otherwise, the exhaust may be either expelled directly into the atmosphere or through the external filter bag 204 as shown.
  • the filter assembly 36 may be internally mounted within the dust settling chamber 30 of the sanding apparatus 15. It should be noted that the filter assembly 36 may be provided regardless of whether the source of vacuum is derived from a remotely located device (not shown) or is provided by the vacuum supplying means 200.
  • the filter assembly 36 includes a support frame 208 which is suitably attached to the lower surface of the upper shelf 22 and is adjacent to the coupling flange 34 so as to circumscribe the inlet thereto.
  • the support frame 208 has a mounting flange 210 from which a grill 212 depends.
  • the grill 212 is shown as a wire mesh structure but could be fabricated in any suitable manner so as to provide support for a filter bag 2M and to hold the bag 214 in the open position against the flow of the exhaust air.
  • FIG. 13 illustrates the coupling flange 134 formed in the back panel 120 of the sanding apparatus 115 as having the vacuum supplying means 230 mounted thereon.
  • the vacuum supplying means 230 is shown as a centrifugal blower having an outlet 232 to which an external filter bag 234 may be attached.
  • the vacuum supplying means 230 could be mounted within the isolated chamber 153 so that the outlet 232 would extend through the backpanel 120 of the cabinet 116.
  • the sanding apparatus 115 could be provided with a filter assembly 136.
  • the filter As previously mentioned the sanding apparatus 115 could be provided with a filter assembly 136. The filter.
  • assembly 136 is constructed similar to the filter assembly 36, as previously described, and is provided with a support frame 236 upon which a suitable filter bag 238 is mounted.
  • the filter assemblies 36 and 136 may be provided with suitable shaker devices (not shown) for periodically removing the sanding dust which would tend to collect on the surface of the filter bags 2114 and 238.
  • a sanding apparatus comprising:
  • a free standing thin-wall cabinet having a dust settling chamber formed therein, said cabinet having a first and a second aperture formed in one side thereof which open into the dust settling chamber;
  • an enclosed sander assembly supportingly mounted on the one side of said cabinet and positioned laterally adjacent to the settling chamber thereof, said sander assembly having an exhaust opening formed therein which aligns with and is in contiguous engagement with the first aperture of said cabinet for exhausting sanding dust from the interior of said sender assembly, and having an access opening formed therein for permitting application of a workpiece thereto, the access opening positioned above the second aperture of said cabinet;
  • a scoop mounted on the one side of said cabinet below the access opening of said sander assembly for catching sanding dust dropping therefrom, said scoop communicating with the second aperture of said cabinet for directing the sanding dust into the settling chamber thereof;
  • drive means mounted on said cabinet in an area isolated from the dust settling chamber and coupled to drive said enclosed sander assembly.
  • a sanding apparatus as claimed in claim 1 wherein said multipanel thin-wall cabinet comprises:
  • a sanding apparatus as claimed in claim 1 wherein said enclosed sander assembly comprises:
  • enclosing means in which the access opening and the exhaust opening are formed
  • a drive wheel supportingly positioned within said enclosing means by said drive means and coupled to be rotatably driven thereby;
  • an adjusting device mounted within said enclosing means and having an adjusting wheel rotatably journaled thereon over which said sanding belt passes, said adjusting device being adjustable to control the tracking path and tension of said sanding belt;
  • a contact wheel journaled for rotation adjacent to the access opening formed in said enclosing means, said contact wheel positioned for engagement with said sanding belt.
  • a sanding apparatus as claimed in claim 1 further comprising a vacuum supplying means supportingly carried on said cabinet by said coupling means for supplying the exhaust air to the dust settling chamber.
  • a sanding apparatus as claimed in claim 1 further comprising a filter assembly mounted within the dust settling chamber of said cabinet and positioned adjacent to said coupling means for filtering the exhaust air.
  • a sanding apparatus as claimed in claim 1 further comprising:
  • a vacuum supplying means mounted on said coupling means for supplying the exhaust air to the dust settling chamber
  • a filter assembly mounted within the dust settling chamber of said cabinet and positioned to circumscribe the inlet to said coupling means for filtering the exhaust air drawn into said vacuum supplying means through said coupling means.
  • a sanding apparatus comprising:
  • an endless wall assembly formed of a plurality of thin-wall panels, said endless wall assembly forming the side enclosures for a dust settling chamber, said endless wall assembly having at least one aperture formed in one of the thin-wall panels thereof and opening into the dust settling chamber;
  • a housing supportingly mounted on said endless wall assembly and extending above said upper shelf, said housing having an access opening and an exhaust aperture formed therein, the exhaust aperture positioned to align with and in contiguous engagement with the aperture formed in the one thinwall panel of said endless wall assembly;
  • drive means mounted on the upper surface of said upper shelf and having a shaft extending into said housing for driving said sanding mechanism.
  • a sanding apparatus as claimed in claim 8 further comprising a scoop mounted on said endless wall assembly and positioned adjacent to the access opening formed in said housing, said scoop communicating with the dust settling chamber through an opening formed in said endless wall assembly.
  • a sanding apparatus as claimed in claim 8 wherein said housing comprises:
  • a base wall removably mounted on the exterior of said endless wall assembly
  • a door mounted on one of said extending walls and adapted to enclose said housing.
  • a sanding apparatus as claimed in claim 8 wherein said sanding mechanism comprises:
  • an adjustable device mounted within said housing for supporting a rotatable adjusting wheel over which said sanding belt passes, said device adjustable for positioning the adjusting wheel to control the tracking path and tension of said sanding belt.
  • a sander apparatus as claimed in claim 8 wherein said endless wall assembly is formed of four panels each of which is adapted to provide supporting structure for one of said housings, each of said housings communicating with the dust settling chamber and having a sander mechanism mounted therein.
  • a sanding apparatus as claimed in claim 8 further comprising a vacuum supply means mounted on said coupling means for providing the exhaust air coupled to the dust settling chamber by said coupling means.
  • a sanding apparatus as claimed in claim 8 further comprising a filter assembly mounted on the lower surface of said upper shelf and depending therefrom into the dust settling chamber, said filter assembly mounted adjacent to said coupling means and positioned to circumscribe the inlet thereto.
  • a sanding apparatus comprising:
  • a multipanel thin-wall cabinet having a dust settling chamber formed therein and at least one enclosed cavity laterally disposed with respect to the dust settling chamber and separated therefrom by a divider panel which has at least one aperture formed therein, said cabinet having an access opening formed therein which communicates between the exterior of said cabinet and the enclosed cavity;
  • a sanding apparatus as claimed in claim 16 wherein said multipanel thin-wall cabinet comprises:
  • a sander apparatus as claimed in claim 16 wherein said sander mechanism comprises:
  • a drive wheel supportingly positioned adjacent to the divider panel and adapted to be driven by said drive means
  • an adjusting device mounted on the divider panel for supportingly carrying an adjusting wheel over which said sanding belt passes, said device adjustable for positioning the adjusting wheel to determine the tracking path and tension of said sanding belt.
  • a sander apparatus as claimed in claim 16 wherein said cabinet is provided with an upper isolated chamber vertically disposed above the dust settling chamber and with a lower isolated chamber vertically disposed below. the dust settling chamber.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

A sanding apparatus is disclosed that includes a multi-panel thin-wall cabinet in the interior of which is formed a dustsettling chamber and the sides of which provide supporting structure for at least one enclosed sander assembly. An air passage is formed between the dust-settling chamber and the sander assembly so that exhaust air coupled to the dust-settling chamber will draw the sanding dust from the sander assembly into the settling chamber.

Description

limited States Patent 1 Solheim Sept. 25, 1973 SANDING APPARATUS [76] Inventor: Karsten Solheim, 10412 North 37th St., Phoenix, Ariz. 85028 22 Filed: Nov. 18, 1971 211 App]. No.: 200,005
[52] US. Cl 51/148, 51/273, 144/252 R [51] Int. Cl B24b 21/04, B24b 55/06 [58] Field of Search 51/135 R, 135 BT, 51/137, 148, 270, 271, 273,170 EB; 144/252 R [56] References Cited UNITED STATES PATENTS 1,062,248 5/1913 Mueller 51/273 1,621,931 3/1927 Johnson 51/135 R 2,449,519 9/1948 Sutton 51/148 2,565,510 10/1951 Martin 51/273 2,640,304 6/1953 McEwan.... 51/148 3,049,842 10/1962 Murschel 51/273 3,110,989 11/1963 Dawsonetal. SI/135 OTHER PUBLICATIONS Hammond of Kalamazoo, catalog number 75, page 8, model number 50 ed.
Primary ExaminerDonald G. Kelly Assistant Examiner-Howard N. Goldberg Attorney-Herbert E. Haynes, Jr.
[57] ABSTRACT A sanding apparatus is disclosed that includes a multipanel thin-wall cabinet in the interior of which is formed a dust-settling chamber and the sides of which provide supporting structure for at least one enclosed sander assembly. An air passage is formed between the dust-settling chamber and the sander assembly so that exhaust air coupled to the dust-settling chamber will draw the sanding dust from the sander assembly into the settling chamber.
22 Claims, 13 Drawing Figures PATENTEDSEPZSIQH I 3,760,538
SHEEI 1 0? a I N VE N'TOR. 102 164257. SbU/E/M AGENT PATENIEUSEPZS I973 sum 2 or a mm T n T 2 m WM M PATENTEU 3.760.538
SHEU l 0F 4 INVENTOR. 1642505 SOAA/E/M A GENT BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to sanding apparatus and more particularly to a sanding mechanism having an integral dust settling chamber.
2. Description of the Prior Art Heavy duty or industrial type sanding equipment normally includes a belt-sander, a dust-settling device, an air filter mechanism and a source of negative air pressure. These installations are designed so that sanding dust is removed from the belt sander and routed through vacuum ducts to the remotely located dustsettling device. All but very fine particles of the sanding dust are collected within the settling device, with the remaining dust particles being removed by routing the exhaust from the settling device to suitable air filtering mechanisms.
In general, prior art belt sanders are fabricated with heavy bases upon which beam type super structures are provided for supporting the wheels, belt and associated drive mechanisms. Some of the prior art belt sanders make little or no provisions for enclosing the belt or removing the sanding dust from the proximity of the machine or its operator. However, in more sophisticated installations, belt guards, either cast or formed of sheet matal are provided for safety purposes and may incorporate vacuum duct work for removing the sanding dust and routing it to a remotely located dust settling device.
One particular prior art belt sander is formed with a pedestal type base enclosure having a belt guard assembly extending angularly upwardly therefrom. Both the base and the belt guard are formed of heavy castings. This apparatus is driven by an electric motor positioned on the base and extending into the base enclosure to power a drive wheel. An endless sanding beltpasses over the drive wheel and over a contact wheel rotatably journalled in the uppermost end of the belt guard. An access opening is formed in the belt guard adjacent to the contact wheel to permit application of a workpiece to the belt. A remote vacuum source is connected to the base enclosure so that air will flow into the apparatus through the access opening, and will pass down through the belt guard and out of the base enclosure to a remote dust-settling device.
When metallic workpieces are being sanded, particular problems result from the metallic dust particles which short out the drive motors and other electric devices such as switches, circuit breakers and the like. In the particular prior art sander hereinbefore described, as well as other similar prior art sanders, this problem is particularly acute due to the electric equipment being mounted adjacent to the base which is necessary to maintain a low center of gravity and thus provide a relatively stable machine.
These prior art belt sanders are, by the nature of their design, bulky and heavy machines which qre not easily assembled or dismantled. These characteristics result in time-consuming and costly handling difficulties whenever the machines must be shipped, stored or relocated.
Except for very expensive special purpose highly sophisticated sanding mechanisms, the prior art belt sanders are single work station devices. Thus, in manufacturing installations where a plurality of work stations are needed, it is a common practice to connect a vacuum duct from each of a plurality of sanders to a common manifold. The manifold is in turn connected to a remotely located dust-settling device. This arrangement results in a maze of vacuum ducts and necessitates one or more separate settling devices.
Therefore, in view of the foregoing, a need exists for i a new and useful sanding apparatus which eliminates some of the problems associated with the prior art sanding mechanisms.
SUMMARY OF THE INVENTION In accordance with the invention, a new and useful sanding apparatus is disclosed. The sanding apparatus of the present invention comprises a multipanel thinwall housing or cabinet, the interior of which forms an integral dust-settling chamber. The side walls of the cabinetprovide supporting structure for at least one enclosed belt sander assembly.
The electric motor and other necessary electric equipment may be located either within the housing above the dust settling chamber or in an isolated compartment below the dust settling chamber.
Exhaust air may be provided by a suitable vacuum motor mounted on the sanding apparatus or may be coupled from a remote source to the dust settling chamber which is provided with an air passage communicating with the enclosed belt sander assembly Thus air flow is directed inwardly into the belt sander assembly through a workpiece access opening formed therein, through the air passage into the dust settling chamber.
According, it is one object of the present invention to provide a new and useful sanding apparatus.
Another object of the present invention is to provide a new and useful sanding apparatus the supporting structure of which is of thin-wall construction.
Another object of the present invention is to provide a new and useful sanding apparatus having a large integrally formed dust settling chamber.
Another object of the present invention is to provide a new and useful sanding apparatus in which a thin wall cabinet houses a dust settling chamber and provides supporting structure for at least one belt sander assembly.
Another object of the present invention is to provide a new and useful sanding apparatus upon which a plurality of belt sanding assemblies are mounted on a common support structure having an integral dust settling chamber formed therein.
Another object of the present invention is to provide a new and useful sanding apparatus in which the electrical equipment is located in a substantially dust-free location.
Another object of the present invention is to provide a new and useful sanding apparatus in which a thin wall cabinet houses a dust settling chamber and provides supporting structure for at least one sanding assembly and drive means therefor. the sanding apparatus may also include a filter assembly and vacuum supplying means to form a completely self-contained apparatus.
Still another object of the present invention is to provide a new and useful sanding apparatus which may be shipped or stored in flat light-weight containers and may be easily assembled with a minimum amount of tooling.
The foregoing and other objects of this invention, the various features thereof, as well as the invention itself, may be more fully understood from the following description when read in conjunction with the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an isometric view of the sanding apparatus of the present invention incorporating the various features thereof;
FIG. 2 is a fragmentary sectional view taken on the line 2-2 of FIG. 1;
FIG. 3 is an enlarged fragmentary sectional view taken on the line 3-3 of FIG. 1;
FIG. 4 is a fragmentary sectional view taken on the line 4-4 of FIG. 3;
FIG. 5 is a fragmentary sectional view taken on the line 5-5 of FIG. 3;
FIG. 6 is a plan view of a modified form of the sanding apparatus illustrated in FIG. 1;
FIG. 7 is a plan view of another modified form of the sanding apparatus illustrated in FIG. 1;
FIG. 8 is a plan view partially broken away to illustrate the features of another embodiment of the sander apparatus of the present invention;
FIG. 9 is a side elevation partially broken away of the sander apparatus of the embodiment illustrated in FIG.
FIG. 10 is a fragmentary front elevation taken on the line 10-10 of FIG. 9;
FIG. 11 is a fragmentary rear elevation, partially broken away, taken on the line 11-11 of FIG. 9,
FIG. 12 is an enlarged fragmentary sectional view of the sanding apparatus shown in FIGS. l-7 illustrating a vacuum supplying means and filter assembly mounted thereon; and
FIG. 13 is an enlarged fragmentary sectional view of the sanding apparatus shown in FIGS. 8-11 illustrating a vacuum supplying means and filter assembly mounted thereon.
DESCRIPTION OF THE PREFERRED EMBODIMENT Referring more particularly to the drawings, FIG. 1 illustrates one form of a sanding apparatus of the present invention which is indicated generally by the reference numeral 15. The sanding apparatus 15 has a cabinet 16 to which a plurality of sander assemblies 17 may be attached.
The cabinet 16 is a multipanel housing which may be fabricated of sheet metal, or other suitable materials, to form a thin-wall structure. In the preferred embodiment of the present invention the cabinet 16 is shown as a six-sided, box-shaped geometric figure having four vertical and two horizontal panels. The inherent structural rigidity of this type of structure is well known in the art. However, other geometric forms may be employed to suit particular requirements. Examples of other forms of construction may include a five-panel structure, seven-panel structure or any multipanel structure.
The cabinet 16 has four spaced apart upstanding rectangular walls 18 which are attached to each other to form an endless wall assembly. Each of the walls 18 are provided with a flange 21 at its lower end so that the sanding apparatus 15 may be leveled and attached to a floor surface in an appropriate manner.
It should be noted that the flanges 21 could be replaced with legs (not shown) or any other suitable support and leveling device.
A substantially horizontal upper shelf 22 is attached at its peripheral edges 23 to the upper ends 24 of the walls 18 such as by sheet metal screws, bolts or the like.
A substantially horizontally disposed lower shelf 28, best seen in FIGS. 1 and 2, is attached at its peripheral edges 29 to the walls 18 in the same manner as the upper shelf 22.
The area enclosed between the upper shelf 22, the lower shelf 28 and the walls 18 is defined as a dust settling or collecting chamber 30.
The upper shelf 22 is provided with a suitable coupling flange 34 to which one end of an air duct 35 is connected. The air duct 35 is connected at its other end to a remotely located high velocity vacuum device (not shown).
Due to the relatively large volumetric area within the chamber 30 as compared to the cross sectional area of the air duct 35, the high velocity air movement within the air duct 35 results in a low velocity exhaust air movement through the settling chamber 30. The low velocity air movement through the chamber 30 allows the heavy particles of the sanding dust, which enter therein from the sander assemblies 17 as will be described, to settle on the lower shelf 28. Thus it may be apparent that only very fine or light-weight dust particles will be exhausted from the chamber 30. A filter assembly 36 may be provided within the dust settling chamber 30 for filtering the exhaust air as will hereinafter be described in detail. The air and any dust particles exhausted from the chamber 30 may be routed through additional external filtering apparatus (not shown).
As seen in FIGS. 1 and 2, the sanding apparatus 15 is provided with a door 37 adjacent to the lower shelf 28 to permit access to the settling chamber 30 so that the settled sanding dust may be periodically removed.
As seen in FIG. 1, four enclosed sander assemblies 17 are provided, each being attached to a different one of the side walls 18 of the cabinet 16. The assemblies 17 are identical structures therefore only one will now be described.
The sander assembly 17 is provided with a housing 40 or enclosing means having a vertically disposed inwardly positioned base wall 41 which is mounted adjacent to and in contiguous contact with the outwardly disposed surface of the wall 18 and is maintained in this position by bolts or other suitable mounting devices. The housing 40 is provided with an upper end wall 42, a lower end wall 43, a rear end wall 44 and a front end wall 45. The walls 42-45 are spaced apart with respect to each other, are normal to the base wall 41 and extend outwardly therefrom to form the housing 40 into a box-shaped structure. Each of the walls 42-45 are provided with an inwardly disposed lip 46 formed on their respective outermost extending edges to which a suitable air sealing gasket 47 is secured.
A door 48 is mounted on the housing 40 by a hinge 50 which is appropriately secured to the rear wall 44. The door 48 is suitably reinforced to provide a rigid structure which sealingly engages the gasket 47 when the door 48 is held in the closed position by a closing handle 51 (FIG. 1).
An access opening 54 is formed in the housing 40 adjacent to the corner formed by the junction of the front wall 45 with the lower wall 43. The opening 54 is formed by eliminating a portion of the lower wall 43 and providing a notch 55 in the base wall 41 (FIG. 3) and a similar notch 56 in the door 48 (FIG. 1). The opening 54 exposes a portion of a sanding mechanism 60, to be hereinafter described, so that a workpiece may be applied thereto.
The base wall 41 is provided with an exhaust opening 58 which is adjacent to a similar aperture 59 formed in the wall 18 of the cabinet 16 thus providing an air passage communicating therethrough. With the access opening 54 formed in the housing 40 and the remainder thereof sealed as hereinbefore described, exhaust air movement caused by the vacuum applied to the settling chamber 30 results in an air path inwardly directed through the access opening 54 and through the apertures 58 and 59 and into the chamber 30.
The sanding mechanism 60 is mounted within the housing 40. The mechanism 60 includes a drive wheel 61, an adjustable wheel 62, an idler or contact wheel 63 and an endless sanding belt 64.
It should be understood that the sanding mechanism 60 may be modified to suit particular requirements and such modifications could include a two-wheel or multiwheel arrangement to accommodate shorter or longer belt lengths.
As seen best in FIGS. 3 and 4, the drive wheel 61 is coupled through an aperture 66 formed in the base wall 41 of the housing 40 to an electric motor 68 or drive means. The motor 68 is mounted on the upper shelf 22 of the cabinet 16. The shelf 22 is provided with a plurality of elongated inverted hat-shaped in cross section structural braces 69 secured to the lower surface thereof. The braces 69 reinforce the upper shelf 22 to form a rigid mounting surface for supporting a plurality of the motors 68, a separate motor 68 is provided for each of the sanding assemblies 17.
It should be noted that the motors 68 and the other necessary electric equipment (not shown) mounted on the upper shelf 22 are surrounded by the upstanding portions of the housings 40, thus locating the electric equipment of the sanding apparatus in a substantially dust-free area.
The endless sanding belt 64 is driven in a counterclockwise direction by the drive wheel 61, as indicated by an arrow 70 in FIG. 3. The belt 64 passes over the adjusting wheel 62 and the contact wheel 63.
The contact wheel 63 is rotatably journaled on a trunion 72 which is suitably mounted on the base wall 41 adjacent to the access opening 54 of the housing 40.
The adjusting wheel 62 is rotatably mounted on a trunion 75 carried on an adjusting device 76 which provides means for adjusting belt tension and tracking path. The adjusting device 76, as best seen in FIGS. 3 and 5, includes an L-shaped bracket 77 fixedly secured to the base wall 41 of the housing 40 such as by bolts 78. A swing plate 79 is pivotably suspended by a pivot pin 80 from the bracket 77. The plate 79 is also secured to the base wall 41 of the'housing 40 by screws 81 positioned in diagonally opposed corners of the plate 79. The screws 81 are employed to initially longitudinally align the plate 79 and are each provided with a spring 82 so that the plate 79 may be pivotably moved about the pivot pin 80 by an adjusting knob 83, the threaded shank 84 of which bears against the plate 79. It should be readily apparent that movement of the knob causes pivotable movement of the plate 79 about the pivot pin 80 which is limited'to a small arcuate movement by the springs 82. However, small movements of the plate 79 are all that is needed to adjust the longitudinal axis of the trunion about which the wheel 62 revolves. These small changes in the disposition of the trunions 75 permit adjustment of the tracking path of the belt 64 over the wheels 61, 62 and 63.
The tension applied to the belt 64 is accomplished by l the same adjusting device 76. The tensioning is accomplished by an elongated arm 86 which carries the trunion 75 on one end thereof and is pivotably attached on its other end by a pivot pin 87 to the plate 79. Arcuate movement of the arm 86 and thus the wheel 62 in the direction of an arrow 88 (FIG. 3) applies tension to the belt 64, and movement of the arm 86 and wheel 62 in the opposite direction relieves the tension. The arm 86 is biased in the tension applying direction by a compression spring 90. One end of the spring 90 contacts a lower surface of the arm 86 and the other end is retained upon a spring keeper 91. The keeper 91 is carried on a shank 92 of an adjusting knob 93 which is threadably adjustable in an L-shaped bracket 94 dependingly attached to the plate 79. I
Since the belt 64 moves in the direction of arrow 70 as hereinbefore described, most of the sanding dust will be directed downwardly from the proximity of the contact wheel 63. Only a small portion of the dust will enter the housing 40 by being carried on the belt 64 and by the inflow of air through the openings 54. Therefore a scoop 98 is attached to the cabinet 16 such as by screws. The scoop is provided with an upwardly disposed opening 100 which directs the dust downwardly and into the settling chamber 30 through an opening 101 (FIG. 2) formed in the wall 18 thereof. The scoop is provided with an inclined surface 102 which is formed into a substantially horizontally disposed bottom 103 adjacent to the opening 101. The bottom 103 is provided to catch any foreign material which may accidentally drop into the scoop 98.
The hereinbefore described sanding apparatus 15 which is seen best in FIG. 1 is shown as having four individually operable sander assemblies 17 mounted thereon to provide four separate work stations. FIG. 6 illustrates a sanding apparatus 15a which is provided with two sander assemblies 17 to form a two-work station apparatus. FIG. 7 illustrates a single work station sanding apparatus 15b. The cabinets, settling chambers and sander assemblies of the sanding apparatuses 15a and 15b are fabricated by employing the same basic techniques and operating mechanisms as previously described for the apparatus 15.
With reference now to FIGS. 8-11 wherein a modified sanding apparatus of the present invention is indicated generally by the reference numeral 115.
The sanding apparatus is best suited to provide a low profile two-work station machine which employs the same basic components and construction methods as the previously described sanding apparatus 15. It will be noted that some rearranging of components was needed to best meet the requirements of this particular application.
The sanding apparatus 115 has a cabinet 116 which provides supporting structure for a pair of sander assemblies 117.
The cabinet 1 16 is a multipanel housing fabricated of thin wall materials to provide an endless wall assembly having a pair of spaced apart side walls 118, a front panel 119, a rear panel 120, a base panel 121 and a top panel 123. An upper shelf 122 and a lower shelf 128 are mounted within the cabinet 116. The upper and lower shelves 122 and 128 respectively are spacedly arranged to provide a dust settling chamber 130.
A coupling flange 134 is provided in the rear panel 120 to which an air duct 135 is connected. A filter assembly 136 may be provided within the dust settling chamber 130 as will hereinafter be described in detail. A high velocity vacuum device (not shown) is coupled to the settling chamber 130 which causes it to function in the same manner as the hereinbefore described settling chamber 30. A clean-out door 137 is provided for removing sanding dust from the settling chamber 130.
As best seen in FIG. 8, a pair of sander assemblies 117 are provided, each being positioned adjacent to a different one of the side walls 118. The sander assemblies 117 are identical to each other, therefore only one will now be described.
It will become apparent from the description to follow that some structural differences exist between the apparatus and the apparatus 115. It should be noted that these differences are merely design expedients as both of the sanding apparatuses 15 and 115 could be fabricated by employing either structural technique.
The cabinet 116 is provided with a cavity 140 or enclosing means formed therein which is laterally disposed with respect to the dust settling chamber 130, and is separated therefrom by the wall 118 which serves as a divider panel. Therefore, it may be seen that the cavity 140 serves the same purpose in the apparatus 115 as housing 40 does in the apparatus 15.
The wall or divider panel 118 is recessed so that the front panel 119 and the rear panel 120 extend beyond the wall 118 to provide a rear extending end 144 and a front extending end 145 which form the front and rear enclosing structure for the cavity 140. The base panel 121 encloses the bottom of the cabinet 116 and extends beyond the divider panel 118 to form an extending end 143 for enclosing the bottom of cavity 140. The top panel 123 is positioned to enclose the top of the cabinet 116 and provide an extending end 142 for enclosing the top of the cavity 140. The top panel 123 is provided with an access lid 149.
A suitably reinforced door 148 is mounted on a hinge 150 to sealingly enclose the cavity 140 in the manner hereinbefore described for door 48 of the housing 40.
As best seen in FIGS. 8 and 11, the base panel 121 and top panel 123 extend across the entire width of the sanding apparatus 115. Thus, a lower isolated electric equipment compartment 152 is formed below the settling chamber 130, and an upper isolated electric equipment compartment 153 is provided above the settling chamber 130. The upper and lower compartments 152 and 153 are at ambient pressure so that migration of the sanding dust from the negatively pressurized sanding assemblies 117 and settling chamber 130 will not occur due to the pressure differential.
An access opening 154 is provided in the upper end of the front extending end 145 to expose a portion of a sanding mechanism 160, to hereinafter be described in detail, so that a workpiece may be applied thereto.
The wall or divider panel 118 is provided with at least one aperture or exhaust opening 158 formed therein which provides an air passage that communicates between the cavity 140 and the settling chamber 130. The exhaust air path through the apparatus 115 will therefore be inwardly through the access opening 154 into the cavity and through the aperture 158 into the settling chamber 130.
The sanding mechanism 160 is similar to the previously described sanding mechanism 60, and includes a drive wheel 161, an adjustable wheel 162, a contact wheel 163 and an endless sanding belt 164.
As shown in FIG. 11, the drive wheel 161 is driven by a double ended electric motor 168 or other suitable drive means located in the isolated compartment 152 below the settling chamber 130. It should be noted that the motor 168 could have been mounted within the upper compartment 153 without affecting the stability of the apparatus 115 due to the inherent structural rigidity of the cabinet 116.
The adjustable wheel 162 is carried on an adjusting device 176 which may be identical to the previously described adjusting device 76, and will therefore not be described again.
The contact wheel 163 is mounted externally of the cabinet 116 on a hat-shaped in cross section brace 171 appropriately secured to the front of the cabinet. The brace 171 carries a trunion mount assembly 172 upon which the contact wheel 163 is rotatably journaled.
The belt 164 is driven in the direction of an arrow (FIG. 9) therefore directing the sanding dust downwardly into a scoop 98 located below the contact wheel 163.
The brace 171 is provided with laterally extending shield portions 173 to protect an operator from any sanding dust which may be carried outwardly by the belt 164. A centrally located portion of the brace 171 between the trunion mounts 172 may be employed to mount a stop-start switch 174 or other control devices as desired.
Other electric devices and wiring (not shown) may be mounted in either the upper or lower compartments 152 and 153.
A modified mounting assembly 199 upon which the apparatus 115 may be secured to the floor is shown in FIG. 11.
With reference now to FIGS. 12 and 13 wherein the sanding apparatuses 15 and 115 are each shown with a vacuum supplying means 200 and 230 respectively to illustrate these apparatuses as self-contained units.
FIG. 12 shows the coupling flange 34 formed in the upper shelf 22 of the sanding apparatus 15 as having the vacuum supplying means 200 mounted thereon. The vacuum supplying means 200 is shown as a centrifugal blower having an outlet 202 to which an external filter bag 204 is secured such as by a clamp 206. If further filtering of the exhaust air is desired, an exhaust duct (not shown) could be connected to the outlet 202 for routing the exhaust to remote filtering devices (not shown). Otherwise, the exhaust may be either expelled directly into the atmosphere or through the external filter bag 204 as shown.
As hereinbefore briefly described, the filter assembly 36 may be internally mounted within the dust settling chamber 30 of the sanding apparatus 15. It should be noted that the filter assembly 36 may be provided regardless of whether the source of vacuum is derived from a remotely located device (not shown) or is provided by the vacuum supplying means 200.
The filter assembly 36 includes a support frame 208 which is suitably attached to the lower surface of the upper shelf 22 and is adjacent to the coupling flange 34 so as to circumscribe the inlet thereto. The support frame 208 has a mounting flange 210 from which a grill 212 depends. The grill 212 is shown as a wire mesh structure but could be fabricated in any suitable manner so as to provide support for a filter bag 2M and to hold the bag 214 in the open position against the flow of the exhaust air.
FIG. 13 illustrates the coupling flange 134 formed in the back panel 120 of the sanding apparatus 115 as having the vacuum supplying means 230 mounted thereon. The vacuum supplying means 230 is shown as a centrifugal blower having an outlet 232 to which an external filter bag 234 may be attached.
The vacuum supplying means 230 could be mounted within the isolated chamber 153 so that the outlet 232 would extend through the backpanel 120 of the cabinet 116.
As previously mentioned the sanding apparatus 115 could be provided with a filter assembly 136. The filter.
assembly 136 is constructed similar to the filter assembly 36, as previously described, and is provided with a support frame 236 upon which a suitable filter bag 238 is mounted.
The filter assemblies 36 and 136 may be provided with suitable shaker devices (not shown) for periodically removing the sanding dust which would tend to collect on the surface of the filter bags 2114 and 238.
While the principles of the invention have now been made clear in the preferred embodiment, there will be immediately obvious to those skilled in the art many modifications of structure, arrangement, proportions, the elements, materials and components, used in the practice of the invention, and otherwise, which are particularly adapted for specific environments and operating requirements without departing from those principles. The appended claims are therefore intended to cover and embrace any such modifications within the limits only of the true spirit and scope of the invention.
What I claim is: i
l. A sanding apparatus comprising:
a. a free standing thin-wall cabinet having a dust settling chamber formed therein, said cabinet having a first and a second aperture formed in one side thereof which open into the dust settling chamber;
b. coupling means on said cabinet for connecting a source of exhaust air to the dust settling chamber thereof;
c. an enclosed sander assembly supportingly mounted on the one side of said cabinet and positioned laterally adjacent to the settling chamber thereof, said sander assembly having an exhaust opening formed therein which aligns with and is in contiguous engagement with the first aperture of said cabinet for exhausting sanding dust from the interior of said sender assembly, and having an access opening formed therein for permitting application of a workpiece thereto, the access opening positioned above the second aperture of said cabinet;
d. a scoop mounted on the one side of said cabinet below the access opening of said sander assembly for catching sanding dust dropping therefrom, said scoop communicating with the second aperture of said cabinet for directing the sanding dust into the settling chamber thereof; and
e. drive means mounted on said cabinet in an area isolated from the dust settling chamber and coupled to drive said enclosed sander assembly.
2. A sanding apparatus as claimed in claim 1 wherein said multipanel thin-wall cabinet comprises:
a. a plurality of side walls attached to each other to form an endless wall assembly;
b. an upper shelf attached at its peripheral edges to each of said side walls; and
c. a lower shelf attached at its peripheral edges to each of said side walls, said upper and lower shelves and said side walls spaced apart to enclose the dust settling chamber therebetween.
3. A sanding apparatus as claimed in claim 1 wherein said coupling means is located at a position remote from the bottom of the dust settling chamber.
4. A sanding apparatus as claimed in claim 1 wherein said enclosed sander assembly comprises:
a. enclosing means in which the access opening and the exhaust opening are formed;
b. an endless sandingbelt movably mounted within said enclosing means;
c. a drive wheel supportingly positioned within said enclosing means by said drive means and coupled to be rotatably driven thereby;
d. an adjusting device mounted within said enclosing means and having an adjusting wheel rotatably journaled thereon over which said sanding belt passes, said adjusting device being adjustable to control the tracking path and tension of said sanding belt; and
e. a contact wheel journaled for rotation adjacent to the access opening formed in said enclosing means, said contact wheel positioned for engagement with said sanding belt.
5. A sanding apparatus as claimed in claim 1 further comprising a vacuum supplying means supportingly carried on said cabinet by said coupling means for supplying the exhaust air to the dust settling chamber.
6. A sanding apparatus as claimed in claim 1 further comprising a filter assembly mounted within the dust settling chamber of said cabinet and positioned adjacent to said coupling means for filtering the exhaust air.
7. A sanding apparatus as claimed in claim 1 further comprising:
a. a vacuum supplying means mounted on said coupling means for supplying the exhaust air to the dust settling chamber; and
b. a filter assembly mounted within the dust settling chamber of said cabinet and positioned to circumscribe the inlet to said coupling means for filtering the exhaust air drawn into said vacuum supplying means through said coupling means.
8. A sanding apparatus comprising:
a. an endless wall assembly formed of a plurality of thin-wall panels, said endless wall assembly forming the side enclosures for a dust settling chamber, said endless wall assembly having at least one aperture formed in one of the thin-wall panels thereof and opening into the dust settling chamber;
b. a thin-wall upper shelf attached at its peripheral edges to each of the panels of said endless wall assembly for closing the top of the dust settling chamber;
c. a thin-wall lower shelf attached at its peripheral edges to each of the panels of said endless wall assembly for closing the bottom of the dust settling chamber;
d. coupling means formed on said upper shelf for coupling a source of exhaust air to the dust settling chamber;
e. a housing supportingly mounted on said endless wall assembly and extending above said upper shelf, said housing having an access opening and an exhaust aperture formed therein, the exhaust aperture positioned to align with and in contiguous engagement with the aperture formed in the one thinwall panel of said endless wall assembly;
f. a sanding mechanism mounted within said housing;
and
g. drive means mounted on the upper surface of said upper shelf and having a shaft extending into said housing for driving said sanding mechanism.
9. A sanding apparatus as claimed in claim 8 wherein said housing is demountably attached to said endless wall assembly.
10. A sanding apparatus as claimed in claim 8 further comprising a scoop mounted on said endless wall assembly and positioned adjacent to the access opening formed in said housing, said scoop communicating with the dust settling chamber through an opening formed in said endless wall assembly.
11. A sanding apparatus as claimed in claim 8 wherein said housing comprises:
a. a base wall removably mounted on the exterior of said endless wall assembly;
b. a plurality of extending walls each normal to said base wall and positioned on a different peripheral edge thereof, at least one of said extending walls having an access opening formed therein to permit application of a workpiece to said sanding mechanism; and
c. a door mounted on one of said extending walls and adapted to enclose said housing.
12. A sanding apparatus as claimed in claim 8 wherein said sanding mechanism comprises:
a. an endless sanding belt;
b. a drive wheel supportingly positioned within said housing and rotatably driven by the shaft of said drive means, said drive wheel drivingly engaging said sanding belt;
0. a contact wheel rotatably journaled within said housing adjacent to the access opening thereof, said contact wheel positioned to engage said sanding belt; and
d. an adjustable device mounted within said housing for supporting a rotatable adjusting wheel over which said sanding belt passes, said device adjustable for positioning the adjusting wheel to control the tracking path and tension of said sanding belt.
13. A sander apparatus as claimed in claim 8 wherein said endless wall assembly is formed of four panels each of which is adapted to provide supporting structure for one of said housings, each of said housings communicating with the dust settling chamber and having a sander mechanism mounted therein.
14. A sanding apparatus as claimed in claim 8 further comprising a vacuum supply means mounted on said coupling means for providing the exhaust air coupled to the dust settling chamber by said coupling means.
15. A sanding apparatus as claimed in claim 8 further comprising a filter assembly mounted on the lower surface of said upper shelf and depending therefrom into the dust settling chamber, said filter assembly mounted adjacent to said coupling means and positioned to circumscribe the inlet thereto.
16. A sanding apparatus comprising:
a. a multipanel thin-wall cabinet having a dust settling chamber formed therein and at least one enclosed cavity laterally disposed with respect to the dust settling chamber and separated therefrom by a divider panel which has at least one aperture formed therein, said cabinet having an access opening formed therein which communicates between the exterior of said cabinet and the enclosed cavity;
b. coupling means on said cabinet for coupling exhaust air to the dust settling chamber thereof;
c. a sander mechanism mounted within the enclosed cavity of said cabinet; and
(1. drive means mounted in said cabinet and isolated from the dust settling chamber said drive means coupled through the divider panel to drive said sander mechanism.
17. A sanding apparatus as claimed in claim 16 wherein said multipanel thin-wall cabinet comprises:
a. a base panel;
b. a front panel attached to said base;
c. a rear panel attached to said base and spaced from said rear panel;
(1. a top panel attached to the upper ends of said front and said rear panels;
e. a pair of side panels at least one of which is recessed to form the divider panel and to provide extending ends on each of said base, front, rear and top panels, at least one of the extending ends having the access opening formed therein;
f. a door mounted on one of the extending ends for closing the cavity formed in said cabinet; and
g. at least one shelf mounted within the dust settling chamber to form an isolated compartment in which said drive means is mounted.
18. A sander apparatus as claimed in claim 16 wherein said sander mechanism comprises:
a. an endless sanding belt;
b. a drive wheel supportingly positioned adjacent to the divider panel and adapted to be driven by said drive means;
0. a contact wheel rotatably journaled adjacent to the access opening formed in said cabinet and positioned to engage said sanding belt; and
d. an adjusting device mounted on the divider panel for supportingly carrying an adjusting wheel over which said sanding belt passes, said device adjustable for positioning the adjusting wheel to determine the tracking path and tension of said sanding belt.
19. A sander apparatus as claimed in claim 16 wherein said apparatus further includes:
a. a scoop formed on said cabinet adjacent to the access opening formed therein, said scoop adapted to catch sanding dust and direct it into the enclosed cavity formed in said cabinet; and
b. means on said cabinet for emptying settled sanding dust from the interior of the dust settling chamber.
20. A sander apparatus as claimed in claim 16 wherein said cabinet is provided with an upper isolated chamber vertically disposed above the dust settling chamber and with a lower isolated chamber vertically disposed below. the dust settling chamber.
21. A sander apparatus as claimed in claim 16 wherein said multipanel thin-wall cabinet comprises a four-sided structure having a pair of opposed enclosed cavities formed therein each of which communicates M b. a frame mounted within the dust settling chamber of said cabinet and positioned adjacent to said coupling means; and c. a filter bag mounted on said frame for filtering out sanding dust in the exhaust air drawn from the dust settling chamber by said vacuum supplying means.

Claims (21)

  1. 2. A sanding apparatus as claimed in claim 1 wherein said multipanel thin-wall cabinet comprises: a. a plurality of side walls attached to each other to form an endless wall assembly; b. an upper shelf attached at its peripheral edges to each of said side walls; and c. a lower shelf attached at its peripheral edges to each of said side walls, said upper and lower shelves and said side walls spaced apart to enclose the dust settling chamber therebetween.
  2. 3. A sanding apparatus as claimed in claim 1 wherein said coupling means is located at a position remote from the bottom of the dust settling chamber.
  3. 4. A sanding apparatus as claimed in claim 1 wherein said enclosed sander assembly comprises: a. enclosing means in which the access opening and the exhaust opening are formed; b. an endless sanding belt movably mounted within said enclosing means; c. a drive wheel supportingly positioned within said enclosing means by said drive meaNs and coupled to be rotatably driven thereby; d. an adjusting device mounted within said enclosing means and having an adjusting wheel rotatably journaled thereon over which said sanding belt passes, said adjusting device being adjustable to control the tracking path and tension of said sanding belt; and e. a contact wheel journaled for rotation adjacent to the access opening formed in said enclosing means, said contact wheel positioned for engagement with said sanding belt.
  4. 5. A sanding apparatus as claimed in claim 1 further comprising a vacuum supplying means supportingly carried on said cabinet by said coupling means for supplying the exhaust air to the dust settling chamber.
  5. 6. A sanding apparatus as claimed in claim 1 further comprising a filter assembly mounted within the dust settling chamber of said cabinet and positioned adjacent to said coupling means for filtering the exhaust air.
  6. 7. A sanding apparatus as claimed in claim 1 further comprising: a. a vacuum supplying means mounted on said coupling means for supplying the exhaust air to the dust settling chamber; and b. a filter assembly mounted within the dust settling chamber of said cabinet and positioned to circumscribe the inlet to said coupling means for filtering the exhaust air drawn into said vacuum supplying means through said coupling means.
  7. 8. A sanding apparatus comprising: a. an endless wall assembly formed of a plurality of thin-wall panels, said endless wall assembly forming the side enclosures for a dust settling chamber, said endless wall assembly having at least one aperture formed in one of the thin-wall panels thereof and opening into the dust settling chamber; b. a thin-wall upper shelf attached at its peripheral edges to each of the panels of said endless wall assembly for closing the top of the dust settling chamber; c. a thin-wall lower shelf attached at its peripheral edges to each of the panels of said endless wall assembly for closing the bottom of the dust settling chamber; d. coupling means formed on said upper shelf for coupling a source of exhaust air to the dust settling chamber; e. a housing supportingly mounted on said endless wall assembly and extending above said upper shelf, said housing having an access opening and an exhaust aperture formed therein, the exhaust aperture positioned to align with and in contiguous engagement with the aperture formed in the one thin-wall panel of said endless wall assembly; f. a sanding mechanism mounted within said housing; and g. drive means mounted on the upper surface of said upper shelf and having a shaft extending into said housing for driving said sanding mechanism.
  8. 9. A sanding apparatus as claimed in claim 8 wherein said housing is demountably attached to said endless wall assembly.
  9. 10. A sanding apparatus as claimed in claim 8 further comprising a scoop mounted on said endless wall assembly and positioned adjacent to the access opening formed in said housing, said scoop communicating with the dust settling chamber through an opening formed in said endless wall assembly.
  10. 11. A sanding apparatus as claimed in claim 8 wherein said housing comprises: a. a base wall removably mounted on the exterior of said endless wall assembly; b. a plurality of extending walls each normal to said base wall and positioned on a different peripheral edge thereof, at least one of said extending walls having an access opening formed therein to permit application of a workpiece to said sanding mechanism; and c. a door mounted on one of said extending walls and adapted to enclose said housing.
  11. 12. A sanding apparatus as claimed in claim 8 wherein said sanding mechanism comprises: a. an endless sanding belt; b. a drive wheel supportingly positioned within said housing and rotatably driven by the shaft of said drive means, said drive wheel drivingly engaging said sanding belt; c. a contact wheel rotatably journaled within said housing adjacent to tHe access opening thereof, said contact wheel positioned to engage said sanding belt; and d. an adjustable device mounted within said housing for supporting a rotatable adjusting wheel over which said sanding belt passes, said device adjustable for positioning the adjusting wheel to control the tracking path and tension of said sanding belt.
  12. 13. A sander apparatus as claimed in claim 8 wherein said endless wall assembly is formed of four panels each of which is adapted to provide supporting structure for one of said housings, each of said housings communicating with the dust settling chamber and having a sander mechanism mounted therein.
  13. 14. A sanding apparatus as claimed in claim 8 further comprising a vacuum supply means mounted on said coupling means for providing the exhaust air coupled to the dust settling chamber by said coupling means.
  14. 15. A sanding apparatus as claimed in claim 8 further comprising a filter assembly mounted on the lower surface of said upper shelf and depending therefrom into the dust settling chamber, said filter assembly mounted adjacent to said coupling means and positioned to circumscribe the inlet thereto.
  15. 16. A sanding apparatus comprising: a. a multipanel thin-wall cabinet having a dust settling chamber formed therein and at least one enclosed cavity laterally disposed with respect to the dust settling chamber and separated therefrom by a divider panel which has at least one aperture formed therein, said cabinet having an access opening formed therein which communicates between the exterior of said cabinet and the enclosed cavity; b. coupling means on said cabinet for coupling exhaust air to the dust settling chamber thereof; c. a sander mechanism mounted within the enclosed cavity of said cabinet; and d. drive means mounted in said cabinet and isolated from the dust settling chamber said drive means coupled through the divider panel to drive said sander mechanism.
  16. 17. A sanding apparatus as claimed in claim 16 wherein said multipanel thin-wall cabinet comprises: a. a base panel; b. a front panel attached to said base; c. a rear panel attached to said base and spaced from said rear panel; d. a top panel attached to the upper ends of said front and said rear panels; e. a pair of side panels at least one of which is recessed to form the divider panel and to provide extending ends on each of said base, front, rear and top panels, at least one of the extending ends having the access opening formed therein; f. a door mounted on one of the extending ends for closing the cavity formed in said cabinet; and g. at least one shelf mounted within the dust settling chamber to form an isolated compartment in which said drive means is mounted.
  17. 18. A sander apparatus as claimed in claim 16 wherein said sander mechanism comprises: a. an endless sanding belt; b. a drive wheel supportingly positioned adjacent to the divider panel and adapted to be driven by said drive means; c. a contact wheel rotatably journaled adjacent to the access opening formed in said cabinet and positioned to engage said sanding belt; and d. an adjusting device mounted on the divider panel for supportingly carrying an adjusting wheel over which said sanding belt passes, said device adjustable for positioning the adjusting wheel to determine the tracking path and tension of said sanding belt.
  18. 19. A sander apparatus as claimed in claim 16 wherein said apparatus further includes: a. a scoop formed on said cabinet adjacent to the access opening formed therein, said scoop adapted to catch sanding dust and direct it into the enclosed cavity formed in said cabinet; and b. means on said cabinet for emptying settled sanding dust from the interior of the dust settling chamber.
  19. 20. A sander apparatus as claimed in claim 16 wherein said cabinet is provided with an upper isolated chamber vertically disposed above the dust settling chamber and with a lower isolated chamber veRtically disposed below the dust settling chamber.
  20. 21. A sander apparatus as claimed in claim 16 wherein said multipanel thin-wall cabinet comprises a four-sided structure having a pair of opposed enclosed cavities formed therein each of which communicates with the dust settling chamber and each having a sander mechanism mounted therein.
  21. 22. A sanding apparatus as claimed in claim 16 further comprising: a. a vacuum supplying means mounted on said coupling means for supplying the exhaust air coupled to the dust settling chamber by said coupling means; b. a frame mounted within the dust settling chamber of said cabinet and positioned adjacent to said coupling means; and c. a filter bag mounted on said frame for filtering out sanding dust in the exhaust air drawn from the dust settling chamber by said vacuum supplying means.
US00200005A 1971-11-18 1971-11-18 Sanding apparatus Expired - Lifetime US3760538A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4640687A (en) * 1985-07-02 1987-02-03 Maccarthy Sr Donald W Idler pulley adjuster
US4662116A (en) * 1985-08-30 1987-05-05 K. O. Lee Company Grinding attachment
US5133156A (en) * 1990-04-19 1992-07-28 Penn Keystone Corporation Adjustable belt sander for wood
US5237896A (en) * 1992-04-27 1993-08-24 Russell Albright Dust evacuation and tool interlock
US6699108B1 (en) * 2002-12-26 2004-03-02 Pei-Lieh Chiang Rotary woodworking machine having a dust collecting mechanism for a plurality of woodworking members
US20140199924A1 (en) * 2011-09-16 2014-07-17 Felsomat Gmbh & Co. Kg Honing machine with oil-tight operating tank
US9097624B1 (en) * 2013-03-01 2015-08-04 The United States Of America As Represented By The Secretary Of The Army External filter assembly adapted for modifying a suction cleaning device to perform biological sampling

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1062248A (en) * 1912-06-03 1913-05-20 Mueller Mfg Co H Suction-hood for abrading-tools.
US1621931A (en) * 1925-10-20 1927-03-22 Martin E Johnson Desk-sanding machine
US2449519A (en) * 1946-04-08 1948-09-14 Hammond Machinery Builders Inc Belt tightening and tracking device
US2565510A (en) * 1947-11-29 1951-08-28 Charles A Martin Dust collector for tile cutting machines and the like
US2640304A (en) * 1952-04-01 1953-06-02 Mcewan James Belt grinder
US3049842A (en) * 1959-04-23 1962-08-21 Scheer & Cie C F Portable grinding machine
US3110989A (en) * 1960-08-01 1963-11-19 Compo Shoe Machinery Corp Machine for grinding and roughing shoe bottoms

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1062248A (en) * 1912-06-03 1913-05-20 Mueller Mfg Co H Suction-hood for abrading-tools.
US1621931A (en) * 1925-10-20 1927-03-22 Martin E Johnson Desk-sanding machine
US2449519A (en) * 1946-04-08 1948-09-14 Hammond Machinery Builders Inc Belt tightening and tracking device
US2565510A (en) * 1947-11-29 1951-08-28 Charles A Martin Dust collector for tile cutting machines and the like
US2640304A (en) * 1952-04-01 1953-06-02 Mcewan James Belt grinder
US3049842A (en) * 1959-04-23 1962-08-21 Scheer & Cie C F Portable grinding machine
US3110989A (en) * 1960-08-01 1963-11-19 Compo Shoe Machinery Corp Machine for grinding and roughing shoe bottoms

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Hammond of Kalamazoo, catalog number 75, page 8, model number 50 ed. *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4640687A (en) * 1985-07-02 1987-02-03 Maccarthy Sr Donald W Idler pulley adjuster
US4662116A (en) * 1985-08-30 1987-05-05 K. O. Lee Company Grinding attachment
US5133156A (en) * 1990-04-19 1992-07-28 Penn Keystone Corporation Adjustable belt sander for wood
US5237896A (en) * 1992-04-27 1993-08-24 Russell Albright Dust evacuation and tool interlock
US6699108B1 (en) * 2002-12-26 2004-03-02 Pei-Lieh Chiang Rotary woodworking machine having a dust collecting mechanism for a plurality of woodworking members
US20140199924A1 (en) * 2011-09-16 2014-07-17 Felsomat Gmbh & Co. Kg Honing machine with oil-tight operating tank
US9333574B2 (en) * 2011-09-16 2016-05-10 Felsomat Gmbh & Co. Kg Honing machine with oil-tight operating tank
US9097624B1 (en) * 2013-03-01 2015-08-04 The United States Of America As Represented By The Secretary Of The Army External filter assembly adapted for modifying a suction cleaning device to perform biological sampling

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Owner name: KARSTEN MANUFACTURING CORPORATION, A CORP. OF AZ

Free format text: CONDITIONAL ASSIGNMENT;ASSIGNOR:SOLHEIM, KARSTEN AND SOLHEIM, LOUISE C.;REEL/FRAME:005300/0670

Effective date: 19900330