US20220097207A1 - Surface abrading machine - Google Patents
Surface abrading machine Download PDFInfo
- Publication number
- US20220097207A1 US20220097207A1 US17/485,839 US202117485839A US2022097207A1 US 20220097207 A1 US20220097207 A1 US 20220097207A1 US 202117485839 A US202117485839 A US 202117485839A US 2022097207 A1 US2022097207 A1 US 2022097207A1
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- United States
- Prior art keywords
- fluid
- manifold
- shaft
- operator
- end effector
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000012636 effector Substances 0.000 claims abstract description 25
- 239000012530 fluid Substances 0.000 claims abstract description 23
- 230000037361 pathway Effects 0.000 claims abstract 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 230000006378 damage Effects 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 230000036544 posture Effects 0.000 description 4
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 210000004247 hand Anatomy 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 239000003562 lightweight material Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 210000000707 wrist Anatomy 0.000 description 1
Images
Classifications
-
- 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
- B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
- B24B7/10—Single-purpose machines or devices
- B24B7/18—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like
- B24B7/182—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like for walls and ceilings
- B24B7/184—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like for walls and ceilings pole sanders
-
- 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
- B24B55/10—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided
- B24B55/102—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided with rotating tools
-
- 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
- B24B55/10—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided
-
- 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
- B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
- B24B7/10—Single-purpose machines or devices
- B24B7/18—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like
- B24B7/186—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like with disc-type tools
Definitions
- This invention related to the art of machines used for abrading surfaces, particularly such machines that can be operated by a standing operator.
- Machines used for abrading surfaces are known. Such machines typically comprise a rotational abrading unit attached to a grip or a handle for allowing an operator to control the machine while it moves across a surface to be treated. Such machines may produce objectionable vibrations, require high grip forces, or impose poor operational postures that limit the length of time an operator can operate the machine without injury.
- extension shafts which must be rigid to allow the operator's control actions to extend to the tool, will necessarily conduct vibrations of the tool to the operator, who must therefore grip the extension shaft tightly to control the vibration.
- This increased grip not only causes fatigue and can lead to vibration injuries, but also makes it more difficult to operate any control switches or dials which might be on the extension shaft, as letting go with a hand so as to operate any control switch or dial makes it more likely the operator will lose control of the tool, risking damage to the surface being abraded, injury to the operator, or potentially dropping the tool itself, which in certain industrial environments can be catastrophic.
- a fully pneumatic, standup abrading surface treatment machine that can use surface sanding, grinding and polishing tools, absorbs vibration, and is operable in a comfortable, standing posture.
- a Human-Machine Interface (HMI) design provides natural hand/arm orientations for long term usage, by the use of comfortable geometry (size, shape, & angle), stress-free operations for back, knees and hand/wrists, ergonomic solutions allowing stress-free and comfortable operation by the operator that improves operator posture eliminating the need for the operator to use an ergonomically compromised posture such as kneeling or leaning forward, reducing the operator's required grip force, and reducing vibration transmitted to the operator.
- HMI Human-Machine Interface
- the design of the invention includes interchangeable end-effectors to allow different abrading operations to be performed as well as increased longevity of tool and associated hardware.
- the range of angles of the handle allows increased maneuverability, and a motion stop engages transitional motion to supersede rotational motion.
- the design also prevents the unintentional winding of fluid lines.
- a lifting handle is padded similar to that of the handlebars and is conveniently placed at or near the center-of-gravity for balanced transportation, and the lifting handle is also configured to carry fluid from the manifolds to external fluid lines.
- the invention provides a cartridge valve on the operator handle to control the flow of air to the selected abrasion device. Normally closed, the cartridge valve will only allow fluid passage when the lever is depressed by the operator.
- a dual manifold design provides entry of pressurized air into a first manifold, which is divided into 3 channels.
- a power switch controls the overall operational state and controls fluid flow to OPC cartridge valves, a throttled end effector air supply, and a vacuum air supply for dust removal.
- the combination of features provides a robust, ergonomic, and highly efficient stand-up abrading machine compared to those in the prior art. Its lightweight allows better mobility during operation and efficient maneuverability when being transported. Stress for the operator is reduced by provision of an ideal orientation in addition to reducing impact on the operator from vibration.
- the construction of the invention allows provision of different embodiments to address a variety of circumstances.
- One additional embodiment can be used for situations where the surface to be abraded is closer to the operator.
- the central shaft will be shorter than, for instance, the longer shaft employed in a machine to be used for abrading a floor on which the operator stands.
- the central shaft is shorter and the angles of the handle bars and the end effector are changed to allow the operator to conveniently abrade a surface closer to the operator.
- FIG. 1 is a perspective view of a surface abrading machine in accordance with the invention.
- FIG. 2 is a view of an operator's handle portion of a surface abrading machine in accordance with the invention.
- FIG. 3 is a view of a second embodiment of an operator's handle portion of a surface abrading machine in accordance with the invention.
- FIG. 4 is a view of a third embodiment of an operator's handle portion of a surface abrading machine in accordance with the invention.
- FIG. 5 shows a proximal manifold of a surface abrading machine in accordance with the invention.
- FIG. 6 a shows a distal manifold of a surface abrading machine in accordance with the invention.
- FIG. 6 b shows a second embodiment of a distal manifold of a surface abrading machine in accordance with the invention.
- FIG. 7 illustrates the paths provided by the shaft portion of the invention.
- FIG. 8 a is a side view illustrating the air power path of a surface abrading machine in accordance with the invention.
- FIG. 8 b is a side view illustrating the vacuum path of a surface abrading machine in accordance with the invention.
- FIG. 9 a is a side view of the air power path of a second embodiment of a surface abrading machine in accordance with the invention
- FIG. 9 b is a side view of the vacuum path of the second embodiment of a surface abrading machine in accordance with the invention.
- FIG. 10 is a perspective of an embodiment of the invention used for close surfaces.
- a surface abrading machine 2 in accordance with the invention generally comprises an operator's handle 4 , a shaft 6 , a vibration absorber 8 , and an end effector 10 .
- the shaft 6 as well as additional parts, which are described below, are preferably made of light-weight materials, such as extruded aluminum to reduce the overall weight of the machine.
- the surface abrading machine preferably uses pneumatically driven end effectors 10 to reduce flammability concerns, but other types of end effectors are within the contemplation of the invention. While a typical pneumatic fluid used in the machine to be described is air, other gasses may also be used. Thus, the reference to air in this application should be construed broadly to include other gasses as well.
- FIG. 1 Also shown in FIG. 1 is a lifting handle 12 and an optional dust bag 14 .
- FIG. 2 illustrates one embodiment of a handle portion of the machine of FIG. 1 .
- the machine of the invention includes a proximal manifold 16 , a central shaft portion 18 and a distal manifold to be described with reference to FIG. 5 .
- a handle 20 is attached at an upper part of the shaft 6 , and in this embodiment to the top of the proximal manifold 16 .
- a vacuum bag connector 22 is provided on one side of the proximal manifold 16 and a throttle control lever 24 is located on an opposite side.
- a sander on/off lever 26 is mounted to the handle 20 for easy access by the operator to activate/deactivate the end effector as will be described below.
- a power control toggle switch 28 is centrally mounted on the top of the proximal manifold.
- the sander on/off lever operates a valve (not shown) that receives air from the toggle switch to control the flow of air to the end effector through a pneumatic valve operated by the power control lever valve.
- FIG. 3 illustrates an embodiment of the handle portion wherein an additional controller 32 , similar to the above described on/off lever, but instead operated by buttons, is provided to provide air to paths 34 and 36 to control alternative functions of the end effector.
- additional controller is in the form of a lever 38 for controlling the alternative functions through air path 40 .
- FIG. 5 illustrates the proximal manifold in more detail.
- Air under pressure for operation of the machine enters the proximal manifold through a pneumatic connector 42 .
- This air entering the connector is separated into three paths within the proximal manifold 16 , one for powering the end effector, another for operating the power and auxiliary controls through the toggle switch 28 , and a third as the high pressure inlet for the vacuum system.
- the air for operating power and auxiliary control valves (e.g., the valves, which are not shown, controlled by the lever 38 and pressure source connector 42 ) is in turn split into three parts and passed through valves, not shown, and then connected, respectively, to tubular connectors 44 a , 44 b , 44 c to provide control air to valves in the distal manifold, as will be described below.
- Air for powering an end effector is directed through the throttle control 24 to opening 46 for connection to an opening in the distal manifold as will be described below.
- Air for operating a vacuum system is directed to opening 48 for connection to the inlet of an air-operated conveyor to be described below.
- Vacuum opening 49 receives the upper end of the air-operated conveyor 64 and is connected through an internal channel (not shown) to the dust bag 14 shown in FIG. 1 .
- FIGS. 6 a and 6 b show the distal manifold 50 .
- FIG. 6 a shows the configuration of the distal manifold when the auxiliary vacuum system for collecting dust and debris is not needed.
- ports 68 and 49 can be connected, for example, by a tube.
- a bracket 52 for supporting handle 12 extends outward from the manifold itself.
- Air for powering the end effector is supplied to opening 54 , which is connected to outlet 46 of the proximal manifold by tubing (not shown) extending along a longitudinal cavity of the central portion 18 of the shaft 6 .
- Tube connectors 56 receive tubes (not shown) connected to respective connectors 44 a and 44 b to pass air to auxiliary control valves or actuators (not shown) at the end effector.
- Tube connector 58 receives a tube (not shown) also in the cavity inside the central part 18 of the shaft 6 that is connected to outlet 44 a for receiving air from the valve operated by lever 26 and directing it to an valve (not shown) inside the distal manifold that controls passage of air from opening 54 to an end effector.
- FIG. 6 b shows the configuration of the distal manifold when a vacuum is to be used. Parts similar to those of FIG. 6 a have been given the same reference numerals.
- Tube connector 60 receives air to power an air operated conveyer by connecting through an internal channel and valve (not shown) inside the vacuum manifold 66 to the pressure inlet of an air operated conveyor, or integrated vacuum, 64 .
- the vacuum inlet of the air-operated vacuum 64 is connected to vacuum intake 68 in the distal manifold 50 (see FIG. 6 a ).
- Tube connector 62 receives a tube connected to outlet 44 a in the proximal manifold to control a valve (not shown) inside the vacuum manifold 66 to direct air from inlet 60 to the pressure inlet (not shown) of the air-operated conveyor 64 .
- FIG. 7 illustrates the connections described above.
- FIG. 8 a illustrates the air power path 70 from the pressure source connector 42 and power control throttle 24 in the proximal manifold 16 to the distal manifold 50 , through the bracket 52 and thence to the end effector 10 .
- the end effector comprises two sanders, and the terminal part of the air power path has been split to provide an inlet to each of the sanders.
- FIG. 8 b illustrates the vacuum path 72 for the embodiment using the vacuum option.
- the path connects to a vacuum shroud 74 surrounding the end effector.
- FIGS. 9 a and 9 b illustrate the air and vacuum paths for an embodiment where the end effector is a scaler.
- FIG. 10 illustrates an embodiment designed for use when the surface to be abraded is relatively close to the operator.
- the central shaft 18 is shorter than in embodiments designed to abrade a surface on which the operator will be standing.
- a handlebar mounting bracket 76 can provide for a different angle between the handlebar 20 and the central shaft 18
- an end effector mounting bracket 78 can provide for the end effector to extend at a more effective and convenient angle with respect to the central shaft 18 .
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning In General (AREA)
Abstract
Description
- This invention related to the art of machines used for abrading surfaces, particularly such machines that can be operated by a standing operator.
- Machines used for abrading surfaces are known. Such machines typically comprise a rotational abrading unit attached to a grip or a handle for allowing an operator to control the machine while it moves across a surface to be treated. Such machines may produce objectionable vibrations, require high grip forces, or impose poor operational postures that limit the length of time an operator can operate the machine without injury.
- Generally speaking, the more powerful the tool, the more vibration it generates, and tools above a certain horsepower are considered to be too heavy or to vibrate too much for an operator to control holding with only one hand and, therefore, are equipped with grip configurations suitable for two hands. Tools that require two-handed operation, therefore, may produce so much vibration that neither of the operator's hands can release a firm grip on the tool while it is powered, so as to, for instance, operate a control switch or dial.
- Not all surfaces to be abraded have of a suitable height to be easily treated by operator in a standing position, and even those surfaces that are accessible might be so large that the operator must lean forward and reach out in an ergonomically unsuitable manner. While there are health risks associated with every sanding operation, it is especially difficult to operate hand tools to abrade horizontal surfaces that are at a floor level, such as the upper surfaces of aircraft wings or a ship's decks. Existing extension shafts purporting to allow abrading tools to be operated at a distance from the operator's hands by one standing comfortably often do not allow the operator to control the tool well and can also cause loss of air supply or impose hose-routing issues, which reduce productivity and complicate operation. Such extension shafts, which must be rigid to allow the operator's control actions to extend to the tool, will necessarily conduct vibrations of the tool to the operator, who must therefore grip the extension shaft tightly to control the vibration. This increased grip not only causes fatigue and can lead to vibration injuries, but also makes it more difficult to operate any control switches or dials which might be on the extension shaft, as letting go with a hand so as to operate any control switch or dial makes it more likely the operator will lose control of the tool, risking damage to the surface being abraded, injury to the operator, or potentially dropping the tool itself, which in certain industrial environments can be catastrophic.
- Further, simplification of the operation of machines of this type will reduce operator fatigue.
- In accordance with the invention, a fully pneumatic, standup abrading surface treatment machine is provided that can use surface sanding, grinding and polishing tools, absorbs vibration, and is operable in a comfortable, standing posture. A Human-Machine Interface (HMI) design provides natural hand/arm orientations for long term usage, by the use of comfortable geometry (size, shape, & angle), stress-free operations for back, knees and hand/wrists, ergonomic solutions allowing stress-free and comfortable operation by the operator that improves operator posture eliminating the need for the operator to use an ergonomically compromised posture such as kneeling or leaning forward, reducing the operator's required grip force, and reducing vibration transmitted to the operator.
- The design of the invention includes interchangeable end-effectors to allow different abrading operations to be performed as well as increased longevity of tool and associated hardware. The range of angles of the handle allows increased maneuverability, and a motion stop engages transitional motion to supersede rotational motion. The design also prevents the unintentional winding of fluid lines.
- A lifting handle is padded similar to that of the handlebars and is conveniently placed at or near the center-of-gravity for balanced transportation, and the lifting handle is also configured to carry fluid from the manifolds to external fluid lines.
- The invention provides a cartridge valve on the operator handle to control the flow of air to the selected abrasion device. Normally closed, the cartridge valve will only allow fluid passage when the lever is depressed by the operator.
- A dual manifold design provides entry of pressurized air into a first manifold, which is divided into 3 channels. A power switch controls the overall operational state and controls fluid flow to OPC cartridge valves, a throttled end effector air supply, and a vacuum air supply for dust removal.
- The combination of features provides a robust, ergonomic, and highly efficient stand-up abrading machine compared to those in the prior art. Its lightweight allows better mobility during operation and efficient maneuverability when being transported. Stress for the operator is reduced by provision of an ideal orientation in addition to reducing impact on the operator from vibration.
- The construction of the invention allows provision of different embodiments to address a variety of circumstances. One additional embodiment can be used for situations where the surface to be abraded is closer to the operator. In this embodiment the central shaft will be shorter than, for instance, the longer shaft employed in a machine to be used for abrading a floor on which the operator stands. In this additional embodiment the central shaft is shorter and the angles of the handle bars and the end effector are changed to allow the operator to conveniently abrade a surface closer to the operator.
-
FIG. 1 is a perspective view of a surface abrading machine in accordance with the invention. -
FIG. 2 is a view of an operator's handle portion of a surface abrading machine in accordance with the invention. -
FIG. 3 is a view of a second embodiment of an operator's handle portion of a surface abrading machine in accordance with the invention. -
FIG. 4 is a view of a third embodiment of an operator's handle portion of a surface abrading machine in accordance with the invention. -
FIG. 5 shows a proximal manifold of a surface abrading machine in accordance with the invention. -
FIG. 6a shows a distal manifold of a surface abrading machine in accordance with the invention. -
FIG. 6b shows a second embodiment of a distal manifold of a surface abrading machine in accordance with the invention. -
FIG. 7 illustrates the paths provided by the shaft portion of the invention. -
FIG. 8a is a side view illustrating the air power path of a surface abrading machine in accordance with the invention. -
FIG. 8b is a side view illustrating the vacuum path of a surface abrading machine in accordance with the invention. -
FIG. 9a is a side view of the air power path of a second embodiment of a surface abrading machine in accordance with the invention -
FIG. 9b is a side view of the vacuum path of the second embodiment of a surface abrading machine in accordance with the invention. -
FIG. 10 is a perspective of an embodiment of the invention used for close surfaces. - With reference to
FIG. 1 , asurface abrading machine 2 in accordance with the invention generally comprises an operator'shandle 4, ashaft 6, a vibration absorber 8, and anend effector 10. Theshaft 6 as well as additional parts, which are described below, are preferably made of light-weight materials, such as extruded aluminum to reduce the overall weight of the machine. The surface abrading machine preferably uses pneumatically drivenend effectors 10 to reduce flammability concerns, but other types of end effectors are within the contemplation of the invention. While a typical pneumatic fluid used in the machine to be described is air, other gasses may also be used. Thus, the reference to air in this application should be construed broadly to include other gasses as well. - Also shown in
FIG. 1 is alifting handle 12 and anoptional dust bag 14. -
FIG. 2 illustrates one embodiment of a handle portion of the machine ofFIG. 1 . It will be appreciated that the machine of the invention includes aproximal manifold 16, acentral shaft portion 18 and a distal manifold to be described with reference toFIG. 5 . As shown inFIG. 2 , ahandle 20 is attached at an upper part of theshaft 6, and in this embodiment to the top of theproximal manifold 16. Avacuum bag connector 22 is provided on one side of theproximal manifold 16 and athrottle control lever 24 is located on an opposite side. A sander on/off lever 26 is mounted to thehandle 20 for easy access by the operator to activate/deactivate the end effector as will be described below. A powercontrol toggle switch 28, is centrally mounted on the top of the proximal manifold. The sander on/off lever operates a valve (not shown) that receives air from the toggle switch to control the flow of air to the end effector through a pneumatic valve operated by the power control lever valve. -
FIG. 3 illustrates an embodiment of the handle portion wherein anadditional controller 32, similar to the above described on/off lever, but instead operated by buttons, is provided to provide air topaths FIG. 4 illustrates a further embodiment wherein an additional controller is in the form of alever 38 for controlling the alternative functions throughair path 40. - With reference to
FIGS. 5, 6 a, 6 b, and 7,FIG. 5 illustrates the proximal manifold in more detail. Air under pressure for operation of the machine enters the proximal manifold through apneumatic connector 42. This air entering the connector is separated into three paths within theproximal manifold 16, one for powering the end effector, another for operating the power and auxiliary controls through thetoggle switch 28, and a third as the high pressure inlet for the vacuum system. The air for operating power and auxiliary control valves (e.g., the valves, which are not shown, controlled by thelever 38 and pressure source connector 42) is in turn split into three parts and passed through valves, not shown, and then connected, respectively, totubular connectors - Air for powering an end effector is directed through the
throttle control 24 to opening 46 for connection to an opening in the distal manifold as will be described below. - Air for operating a vacuum system is directed to opening 48 for connection to the inlet of an air-operated conveyor to be described below.
-
Vacuum opening 49 receives the upper end of the air-operatedconveyor 64 and is connected through an internal channel (not shown) to thedust bag 14 shown inFIG. 1 . -
FIGS. 6a and 6b show thedistal manifold 50.FIG. 6a shows the configuration of the distal manifold when the auxiliary vacuum system for collecting dust and debris is not needed. In that case,ports bracket 52 for supportinghandle 12 extends outward from the manifold itself. Air for powering the end effector is supplied to opening 54, which is connected tooutlet 46 of the proximal manifold by tubing (not shown) extending along a longitudinal cavity of thecentral portion 18 of theshaft 6.Tube connectors 56 receive tubes (not shown) connected torespective connectors -
Tube connector 58 receives a tube (not shown) also in the cavity inside thecentral part 18 of theshaft 6 that is connected tooutlet 44 a for receiving air from the valve operated bylever 26 and directing it to an valve (not shown) inside the distal manifold that controls passage of air from opening 54 to an end effector. -
FIG. 6b shows the configuration of the distal manifold when a vacuum is to be used. Parts similar to those ofFIG. 6a have been given the same reference numerals.Tube connector 60 receives air to power an air operated conveyer by connecting through an internal channel and valve (not shown) inside thevacuum manifold 66 to the pressure inlet of an air operated conveyor, or integrated vacuum, 64. The vacuum inlet of the air-operatedvacuum 64 is connected tovacuum intake 68 in the distal manifold 50 (seeFIG. 6a ).Tube connector 62 receives a tube connected tooutlet 44 a in the proximal manifold to control a valve (not shown) inside thevacuum manifold 66 to direct air frominlet 60 to the pressure inlet (not shown) of the air-operatedconveyor 64. -
FIG. 7 illustrates the connections described above. -
FIG. 8a illustrates theair power path 70 from thepressure source connector 42 andpower control throttle 24 in theproximal manifold 16 to thedistal manifold 50, through thebracket 52 and thence to theend effector 10. In the case of the machine shown inFIG. 8a , the end effector comprises two sanders, and the terminal part of the air power path has been split to provide an inlet to each of the sanders. -
FIG. 8b illustrates thevacuum path 72 for the embodiment using the vacuum option. The path connects to avacuum shroud 74 surrounding the end effector. -
FIGS. 9a and 9b illustrate the air and vacuum paths for an embodiment where the end effector is a scaler. -
FIG. 10 illustrates an embodiment designed for use when the surface to be abraded is relatively close to the operator. Thus, thecentral shaft 18 is shorter than in embodiments designed to abrade a surface on which the operator will be standing. Ahandlebar mounting bracket 76 can provide for a different angle between thehandlebar 20 and thecentral shaft 18, while an endeffector mounting bracket 78 can provide for the end effector to extend at a more effective and convenient angle with respect to thecentral shaft 18. - Modifications within the scope of the appended claims will be apparent to those of skill in the art.
Claims (7)
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US17/485,839 US20220097207A1 (en) | 2020-09-29 | 2021-09-27 | Surface abrading machine |
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US202063084989P | 2020-09-29 | 2020-09-29 | |
US17/485,839 US20220097207A1 (en) | 2020-09-29 | 2021-09-27 | Surface abrading machine |
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US20040147209A1 (en) * | 2003-01-13 | 2004-07-29 | Bickford Theodore S. | Extension device for a palm sander |
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US20150239088A1 (en) * | 2014-02-21 | 2015-08-27 | Brian Lynn Wisenbaker | Wheeled Mount for Handheld Tools |
US20160325392A1 (en) * | 2014-01-14 | 2016-11-10 | Temple Allen Holdings Llc | Reduced-vibration surface treatment device |
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DE102007012394A1 (en) * | 2007-03-15 | 2008-09-18 | Festool Gmbh | Handle of a hand-held machine tool |
JP2019130643A (en) * | 2018-02-01 | 2019-08-08 | 株式会社マキタ | Long rod type polishing machine |
-
2021
- 2021-09-27 US US17/485,839 patent/US20220097207A1/en active Pending
- 2021-09-28 EP EP21199605.3A patent/EP3974107A1/en active Pending
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US4570278A (en) * | 1983-02-25 | 1986-02-18 | The Kartridg Pak Co. | Portable polisher and buffs therefor |
WO1993014904A1 (en) * | 1992-01-24 | 1993-08-05 | Giuseppe Catalfamo | Smoothing mill with suction, by depression in three stages, of dust so generated |
US6049941A (en) * | 1998-06-18 | 2000-04-18 | Technical Innovations, Inc. | Portable backpack vacuum system |
US20040147209A1 (en) * | 2003-01-13 | 2004-07-29 | Bickford Theodore S. | Extension device for a palm sander |
US7625264B1 (en) * | 2008-09-23 | 2009-12-01 | Jeff Gordon | Pneumatic dry wall sander |
US20160325392A1 (en) * | 2014-01-14 | 2016-11-10 | Temple Allen Holdings Llc | Reduced-vibration surface treatment device |
US20150239088A1 (en) * | 2014-02-21 | 2015-08-27 | Brian Lynn Wisenbaker | Wheeled Mount for Handheld Tools |
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