US20220111476A1 - Dust collector with filter cleaning mechanism - Google Patents
Dust collector with filter cleaning mechanism Download PDFInfo
- Publication number
- US20220111476A1 US20220111476A1 US17/557,564 US202117557564A US2022111476A1 US 20220111476 A1 US20220111476 A1 US 20220111476A1 US 202117557564 A US202117557564 A US 202117557564A US 2022111476 A1 US2022111476 A1 US 2022111476A1
- Authority
- US
- United States
- Prior art keywords
- filter
- housing
- dust
- dust collector
- carrier
- 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.)
- Abandoned
Links
- 239000000428 dust Substances 0.000 title claims abstract description 199
- 238000004140 cleaning Methods 0.000 title claims abstract description 70
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 9
- 241001417527 Pempheridae Species 0.000 claims description 32
- 241000269799 Perca fluviatilis Species 0.000 description 4
- 238000005553 drilling Methods 0.000 description 4
- 230000000994 depressogenic effect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/0042—Devices for removing chips
- B23Q11/0071—Devices for removing chips dust collectors for hand tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/04—Cleaning filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
- B23B45/003—Attachments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/0042—Devices for removing chips
- B23Q11/0046—Devices for removing chips by sucking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/74—Regeneration of the filtering material or filter elements inside the filter by forces created by movement of the filter element
- B01D46/76—Regeneration of the filtering material or filter elements inside the filter by forces created by movement of the filter element involving vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2270/00—Details of turning, boring or drilling machines, processes or tools not otherwise provided for
- B23B2270/30—Chip guiding or removal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2270/00—Details of turning, boring or drilling machines, processes or tools not otherwise provided for
- B23B2270/62—Use of suction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/02—Construction of casings, bodies or handles
- B25F5/029—Construction of casings, bodies or handles with storage compartments
Definitions
- the present invention relates to power tools, and more particularly to dust collectors for use with power tools.
- Dust collectors are typically used in tandem with hand-held drilling tools such as rotary hammers to collect dust and other debris during a drilling operation to prevent dust and other debris from accumulating at a worksite.
- Such dust collectors may be attached to a rotary hammer to position a suction inlet of the collector proximate a drill bit attached to the rotary hammer.
- Such dust collectors may also include an on-board dust container in which dust and other debris is accumulated. Such dust collectors are often removable from the dust collector to facilitate disposal of the accumulated dust and debris.
- the present invention provides, in one aspect, a dust collector for use with a hand-held power tool, the dust collector including a housing, a telescoping suction pipe coupled to the housing, a suction fan positioned in the housing and operable to generate a vacuum in the suction pipe, a dust container coupled to the housing and positioned upstream of the fan, a filter at least partially arranged in the dust container, and a filter cleaning mechanism including an anvil, a striker moveable between a first striker position, in which the striker is spaced from the anvil, and a second striker position, in which the striker is in contact with the anvil, an actuator moveable between a first actuator position and a second actuator position, in which the actuator is moved closer to the anvil than in the first position, and a first spring biasing the striker toward the anvil.
- the actuator In response to the actuator being depressed, the actuator is moved from the first actuator position to the second actuator position and the first spring moves the striker from the first striker position to the second striker position, such that the anvil impacts the filter, thereby dislodging dust and other debris therefrom.
- the present invention provides, in another aspect, a dust collector for use with a hand-held power tool, the dust collector including a housing, a telescoping suction pipe coupled to the housing, a suction fan positioned in the housing and operable to generate a vacuum in the suction pipe, a dust container coupled to the housing and positioned upstream of the fan, a filter at least partially arranged in the dust container, and a filter cleaning mechanism including a mechanism housing having an internal shoulder, an anvil arranged within the mechanism housing and defining an anvil axis, a striker arranged within the mechanism housing and moveable between a first striker position, in which the striker is engaged against the internal shoulder and spaced from the anvil, and a second striker position, in which the striker is disengaged from the shoulder, in contact with the anvil, and coaxial with the anvil axis, an actuator moveable between a first actuator position and a second actuator position, in which the actuator is moved closer to the anvil than in the first position, the actuator including an actuator contact
- a dust collector including a housing, a telescoping suction pipe coupled to the housing, a suction fan positioned in the housing and operable to generate a vacuum in the suction pipe, a dust container coupled to the housing and positioned upstream of the fan, a filter at least partially arranged in the dust container, and a filter cleaning mechanism including a ratchet housing arranged against the filter, a ratchet member configured to rotate within the housing, and a pawl member configured to vibrate the ratchet housing, and thus the filter, in response to rotation of the ratchet member against the pawl member, thereby dislodging dust and other debris from the filter.
- a dust collector including a housing, a telescoping suction pipe coupled to the housing, a suction fan positioned in the housing and operable to generate a vacuum in the suction pipe, a dust container coupled to the housing and operable to generate a vacuum in the suction pipe, a filter at least partially arranged in the dust container, the filter including a first end, a second end, a plurality of pleats arranged between the first end and the second end, and a plurality of valleys, each valley arranged between a pair of adjacent pleats, and a filter cleaning mechanism including a sweeper having at least one blade arranged within each valley, a biasing member biasing the sweeper toward the first end of the filter and away from the second end of the filter, and a pull cord coupled to the sweeper, the pull cord configured to pull the sweeper along the filter from the first end to the second end, such that the blade moves within the valley between the first end and the second end to dislodge dust and other debris from the
- FIG. 1 is a perspective view of a dust collector in accordance with an embodiment of the invention attached to a rotary power tool.
- FIGS. 2A is a perspective view of a dust container of the dust collector of FIG. 1 .
- FIG. 2B is a side cross-sectional view of the dust container of FIG. 2A .
- FIGS. 3A-3E are cross-sectional views of a filter cleaning mechanism of the dust container of FIG. 2A .
- FIG. 5A is a perspective view of a dust container of the dust collector of FIG. 4 .
- FIGS. 6A is a perspective view of a dust container of the dust collector of FIG. 4 , in accordance with another embodiment of the invention, with portions removed.
- FIG. 6B is a perspective view of the dust container of FIG. 6A .
- FIG. 7 is a perspective view of a dust container of the dust collector of FIG. 4 in accordance with another embodiment of the invention, with portions removed.
- FIG. 8 is a perspective of a dust container of the dust collector of FIG. 4 in accordance with another embodiment of the invention, with portions removed.
- FIGS. 9A is a perspective view of a dust container of the dust collector of FIG. 1 in accordance with another embodiment of the invention with portions removed.
- FIG. 9B is a cross-sectional view of the dust container of FIG. 9A .
- FIG. 9C is an enlarged cross-sectional view of the dust container of FIG. 9A .
- FIG. 10 is a perspective view of a dust container of the dust collector of FIG. 1 , in accordance with another embodiment of the invention.
- FIGS. 11A is a perspective view of a dust container of the dust collector of FIG. 4 , in accordance with another embodiment of the invention, with portions removed.
- FIG. 11B is a cross-sectional view of a ratchet assembly of the dust container of FIG. 11A .
- FIG. 12A is a perspective view of a dust container of the dust collector of FIG. 4 , in accordance with another embodiment of the invention, with portions removed.
- FIG. 12B is perspective view of a dust container of the dust collector of FIG. 1 , in accordance with another embodiment of the invention, with portions removed.
- FIG. 1 illustrates a rotary power tool 100 equipped with a dust suction device or dust collector 10 in accordance with an embodiment of the invention.
- the dust collector 10 is separate from the rotary power tool 100 , and may be attached to and detached from the rotary power tool 100 so that the power tool 100 may be used without the dust collector 10 . Accordingly, the rotary power tool 100 may or may not be equipped with the dust collector 10 depending on the requirement of the application.
- the dust collector 10 includes a housing 12 and a telescoping suction pipe 20 coupled to the housing 12 through which dust and other debris is drawn into the housing 12 .
- the dust collector 10 also includes a dust container 28 , a high efficiency particulate air (“HEPA”) filter 18 positioned in the dust container 28 ( FIGS. 2A and 2B ), a suction fan 13 ( FIG. 1 ) positioned downstream of the filter 18 , and an electric motor 14 for rotating the suction fan 13 .
- HEPA high efficiency particulate air
- the dust collector 10 further includes a filter cleaning mechanism 22 positioned within the dust container 28 for cleaning the filter 18 .
- a filter cleaning mechanism 22 positioned within the dust container 28 for cleaning the filter 18 .
- the dust container 28 is a selectively attachable to the housing 12 .
- the dust container 28 includes an inlet 24 for a dust laden air stream and an outlet defined by the outlet end 26 of the filter 18 . More specifically, the dust container 28 includes opposite side walls 28 a and a bottom wall 28 b extending between the side walls 28 a. The side walls 28 a and the bottom wall 28 b partially define the dust collection chamber 16 .
- the dust container 28 additionally includes end walls 30 adjacent each of the side walls 28 a and the bottom wall 28 b, and an opening 30 a in one of the end walls 30 through which the filter 18 is received.
- the dust container 28 is operable to collect dust and other debris from a workpiece during the drilling and/or hammering operation performed by the power tool 100 to maintain the user's work area is substantially clear of dust. Because the dust container 28 is detachable from the housing of the dust collector 10 , the dust container 28 may be removed to allow an operator to empty the dust from the dust collection chamber 16 .
- the filter cleaning mechanism 22 includes a mechanism housing 34 having an anvil 32 defining an anvil axis 36 and a striker 40 for striking the anvil 32 .
- the mechanism housing 34 includes a first end 34 a protruding out of the dust container 28 and an opposite second end 34 b proximate a bottom side 18 a of the filter 18 .
- An O-ring 41 is arranged between the first end 34 a and the bottom wall 28 b of the dust container 28 to prevent dust and debris collected in the dust collection chamber 16 from escaping the dust container 28 .
- the striker 40 is biased toward the anvil 32 by a first spring 44 that is seated about a perch 46 of an actuator 38 , which at least partially surrounds the striker 40 .
- the perch 46 defines a perch axis 45 that is offset relative to the anvil axis 36 by an angle a that is between about 0 and 30 degrees. In the illustrated embodiment, the angle a is approximately 10 degrees.
- the striker 40 is biased away from anvil 40 by a second spring 50 seated on the anvil 40 .
- the first and second springs 44 , 50 are compression springs.
- the second spring 50 has a stiffness that is less than a stiffness of the first spring 44 .
- the striker 40 is moveable between a first striker position ( FIG. 3A ), in which the striker 40 is spaced from the anvil 40 , and a second striker position ( FIG. 3E ), in which it is in contact with the anvil 32 .
- the actuator 38 is a button moveable between a first actuator position and a second actuator position, in which the actuator 38 is moved closer to the anvil 32 than in the first position.
- the actuator 38 includes a bellows 42 on its outer surface, which is engageable by a user for depression of the actuator 38 .
- a cap 56 is arranged over the second end 34 b of the mechanism housing 34 and is engaged against both the anvil 32 and the bottom side 18 a of the filter 18 .
- FIGS. 3A-3E illustrate the operation of the filter cleaning mechanism 22 .
- FIG. 3A illustrates the mechanism 22 in an initial (pre-operational) state.
- the striker 40 is in the first striker position such that the annular shoulder 52 of the striker 40 is caught against an internal shoulder 48 of the mechanism housing 34 due to the biasing force of the first spring 44 .
- the actuator 38 is initially depressed from its first position toward its second position, the first spring 44 becomes increasingly compressed and the striker 40 remains on the internal shoulder 48 ( FIGS.
- annular tapered cam surface 38 a on the interior of the actuator 38 which partly defines the bore in which the first spring 44 is located, contacts an annular tapered follower surface 40 a on the exterior of the striker 40 , pushing the striker 40 off the internal shoulder 48 ( FIG. 3D ).
- the first spring 44 rebounds, releasing the stored potential energy of the first spring 44 and displacing the striker 40 toward the second striker position, in which it strikes the anvil ( FIG. 3E ).
- the spring constant of the second spring 50 is less than the spring constant of the first spring 44 , the rebounding first spring 44 transfers part of its stored energy into the second spring 50 , causing the second spring 50 to compress.
- the striker 40 is reoriented by an internal side 54 of the actuator 38 to be coaxial with the anvil axis 36 , such that the striker 40 moves along the internal side 54 of the actuator and an internal side 53 of the mechanism housing 34 until it strikes the anvil 32 ( FIG. 3E ).
- the force applied to the anvil 32 by the striker 40 is in turn applied to the cap 56 by the anvil 32 and thus applied to the bottom side 18 a of the filter 18 by the cap 56 , thereby dislodging dust and other debris from the filter 18 .
- the first spring 44 When the actuator 38 is released by the operator, the first spring 44 is almost completely expanded and the second spring 50 is then able to release its stored potential energy to push the striker 40 back toward the first striker position, which in turn causes the first spring 44 to push the actuator 38 back toward the first actuator position, returning the filter cleaning mechanism 22 to the state shown in FIG. 3A .
- the striker 40 Around the time when the striker 40 reaches the position shown in FIG. 3D , the striker 40 is redirected underneath the internal shoulder 48 of the mechanism housing 34 , as shown in FIGS. 3C-3A , because the perch axis 46 is oblique with respect to the anvil axis 36 , thus causing the first spring 44 to direct the striker 40 away from the anvil axis 36 and underneath the shoulder 48 .
- FIGS. 4, 5A and 5B illustrates another embodiment of a dust collector 10 ′ for use with a rotary power tool 100 ′, with like components designated with an apostrophe.
- the dust collector 10 ′ and dust container 28 ′ are substantially similar to the dust collector 10 and dust container 28 of FIGS. 1-3 except for the following differences explained below.
- the actuator 38 ′ of the filter cleaning cleaning mechanism 22 ′ is positioned in an end wall 30 ′ instead of the bottom wall 28 b ′.
- the dust container 28 ′ has an approximate triangle shape instead of the approximately L-shape of the dust container 28 .
- FIGS. 6A and 6B illustrate another embodiment of a dust container 128 that is similar in some respects to dust container 28 ′, with like components identified with like reference numerals plus “100” and the apostrophe removed.
- the dust container 128 itself is largely identical to dust container 28 ′, while the filter cleaning mechanism 122 has changed, as described below.
- the filter cleaning mechanism 122 includes a carrier 158 pivotably supported within the dust container 128 about a carrier axis 160 ( FIG. 6A ). More specifically, the carrier 158 is pivotably supported by at least one of the side walls 128 a of the dust container 128 . In the embodiment illustrated in FIGS.
- the carrier 158 is pivotably supported by two of the side walls 128 a.
- the carrier 158 includes a cleaning element 162 extending away from the carrier axis 160 for contacting an inlet surface 131 of the filter 118 .
- the filter cleaning mechanism 122 also includes one or more knobs 164 , with each knob arranged on and rotatably supported by the exterior of one of the side walls 128 a.
- the knobs 164 are coupled for movement with the carrier 158 , such that pivoting the one or more knobs 164 about the carrier axis 160 causes pivoting of the carrier 158 and the cleaning element 162 about the carrier axis 160 to sweep debris from the inlet surface 124 of the filter 118 .
- the filter 118 includes a plurality of pleats 168 a and a plurality of valleys 168 b arranged along the filter 118 , with each valley 168 b being arranged between a pair of adjacent pleats 168 a.
- the cleaning element 162 is a plurality of comb teeth 162 a that are configured to sweep through the valleys 168 b when the comb teeth 162 a are pivoted about the carrier axis 160 . As such, rotation of the knob 164 allows the comb teeth 162 a to sweep debris from the valleys 168 b.
- FIG. 7 illustrates another embodiment of a dust container 228 that is similar in some respects to dust container 28 ′, with like components identified with like reference numerals plus “200” and the apostrophe removed.
- the dust container 228 itself is largely identical to dust container 28 ′, while the filter cleaning mechanism 222 has changed, as described below.
- the cleaning element 262 on the carrier 258 of the dust container assembly 228 is a brush including multiple groups of bristles 270 .
- the carrier 258 is pivotably supported by at least one of the side walls 228 a of the dust container 228 . In the shown embodiments, the carrier 258 is pivotably supported by two of the side walls 228 a.
- Pivoting the one or more knobs 264 back and forth about the carrier axis 260 allows the cleaning element 262 to sweep the inlet surface 230 of the filter 218 .
- the bristles 270 are configured to sweep through the valleys 268 b of the filter 218 as the cleaning element 262 pivots about the carrier axis 260 .
- the carrier 258 is supported by the one or more knobs 264 and the knobs 264 are keyed to a shaft 272 of the carrier 258 through a plurality of flats 274 , thus ensuring co-rotation of the carrier 258 and the knobs 264 .
- the cleaning element 262 has a predefined range of rotation about the carrier axis 260 and one of the cleaning element 262 , carrier 258 , or knob 264 includes stops to prevent the cleaning element 262 from rotating beyond the range of rotation.
- the stops may be arranged such that the bristles 270 are prevented from leaving the inlet surface 231 of the filter 218 .
- Seals are included between the carrier 258 and the dust container 228 to prevent leakage of air or debris outside the dust container 228 .
- FIGS. 8 illustrates yet another embodiment of a dust container 328 that is similar in some respects to dust container 28 ′, with like components identified with like reference numerals plus “300” and the apostrophe removed.
- the dust container 328 itself is largely identical to dust container 28 ′, while the filter cleaning mechanism 322 has changed, as described below.
- the cleaning element 362 on the carrier 358 of the dust container 328 is a plurality of comb teeth 362 a.
- the cleaning element 362 is attached to the carrier 358 , which is coupled to the one or more knob 364 .
- the carrier 358 is pivotably supported by at least one of the side walls 328 a of the dust container 328 via the one or more knobs 364 .
- FIG. 8 illustrates yet another embodiment of a dust container 328 that is similar in some respects to dust container 28 ′, with like components identified with like reference numerals plus “300” and the apostrophe removed.
- the dust container 328 itself is largely identical to dust container 28
- the carrier 358 is pivotably supported by two of the side walls 328 a via oppositely arranged knobs 364 .
- Rotating the carrier 358 back and forth rotates the comb teeth 362 a to comb the filter 318 between its respective pleats 368 a and remove debris from the valleys 368 b.
- the cleaning element 362 is supported by the dust container side walls 328 a, and the knob 364 is integrated with carrier 358 .
- the cleaning element 362 has a predefined range of rotation about the carrier axis 360 and one of the cleaning element 362 , carrier 358 , or knobs 364 include stops to prevent the cleaning element 362 from rotating beyond the range of rotation.
- the stops may be arranged such that the comb teeth 362 a are prevented from moving off of the planar surface 330 of the filter 318 .
- Seals are included between the carrier 358 and the dust container 328 to prevent leakage of air or debris outside the dust container 328 .
- FIGS. 9A-9C illustrates another embodiment of a dust container 428 that is similar in some respects to dust container 28 , with like components identified with like reference numerals plus “400.”
- the dust container 428 itself is largely identical to dust container 28 ′, while the filter cleaning mechanism 422 has changed, as described below.
- the cleaning element 462 on the carrier 458 is a plurality of comb teeth 462 a arranged within valleys 468 b between pleats 468 a of the filter 418 .
- the cleaning element 462 is attached to the carrier 458 , which is coupled to the knob 464 .
- the carrier 458 is pivotably supported by the bottom wall 428 b of the dust container 428 .
- each tooth 462 a is, within each valley 468 b, configured to sweep approximately 67% of the surface area of each pleat 468 a of the filter 418 .
- FIG. 10 illustrates yet another embodiment of a dust container 528 that is similar in some respects to dust container 28 , with like components identified with like reference numerals plus “500.”
- the dust container 528 itself is largely identical to dust container 28 ′, while the filter cleaning mechanism 522 has changed, as described below.
- the cleaning element 562 on the carrier 558 of the dust container 528 is a brush including multiple groups of bristles 570 .
- the cleaning element 562 is attached to the carrier 558 , which is coupled to the knob 564 .
- the carrier 564 includes stops to limit the degree of rotational freedom it has about carrier axis 560 .
- the carrier 558 is pivotably supported by the bottom wall 528 b of the dust container 528 .
- rotation of the carrier 558 also imparts rotational movement to the cleaning element 562 across the filter 518 , sweeping debris from the filter pleats 568 a.
- the carrier 558 is rotatably supported by a clip 582 , which is fastened to a screw boss 584 on the dust container 528 .
- FIGS. 11A and 11B illustrate another embodiment of a dust container 628 that is similar to the dust container 28 ′, with like components identified with like reference numerals plus “600” and the apostrophe removed.
- the dust container 628 itself is largely identical to dust container 28 ′, while the filter cleaning mechanism 622 has changed, as described below.
- the filter cleaning mechanism 622 includes a ratchet assembly 688 for imparting vibration to the filter 618 to shake or dislodge dust or other debris from the inlet surface of the filter 618 .
- the ratchet assembly 688 include a ratchet housing 689 arranged against the filter 618 .
- the ratchet housing 689 includes a pawl 690 positioned on a first end 689 a of the ratchet housing 689 , a first spring 691 positioned on a second end 689 b of the ratchet housing 689 , and a ratchet member 692 positioned between the pawl 690 and the first spring 691 .
- the first spring 691 biases the ratchet member 692 against the pawl 690 .
- the ratchet member 692 may rotate relative to the ratchet housing 689 and the pawl 690 .
- the ratchet housing 689 is rotationally constrained with respect to the dust container 628 , but is permitted to move axially.
- the ratchet member 692 and pawl 690 include mated teeth that are configured to slide relative to each other in response to rotation of the ratchet member 692 relative to the pawl 690 , imparting axial displacement to the ratchet housing 689 .
- a shaft 693 extends into the ratchet housing 689 having a first end 693 a extending into the ratchet housing 689 and coupled to the ratchet member 692 , and an opposite second end 693 b coupled to a knob 694 .
- rotation of the knob 694 imparts rotation to the shaft 693 , which rotates the ratchet member 692 relative to the ratchet housing 689 .
- the ratchet assembly 688 further includes a second spring 695 coupled to an external surface of the housing 689 and surrounding the shaft 693 .
- the second spring 695 biases the first end 689 a of the ratchet housing 689 against the filter 618 .
- the second spring 695 is a resilient clip.
- a plurality of wave washers can be used to bias the housing ratchet 689 toward the filter 618 .
- the first spring 691 biases the ratchet member 692 against the pawl 690 , causing the teeth of the ratchet member 692 and pawl 690 to slide relative to each other in response to rotation of the ratchet member 692 relative to the pawl 690 .
- This causes the ratchet housing 689 to undergo reciprocating axial displacement against the filter 618 to dislodge dust and other debris from the inlet surface of the filter 618 .
- FIGS. 12A illustrates another embodiment of a dust container 728 that is similar to the dust container 28 ′, with like components identified with like reference numerals plus “700” and the apostrophe removed.
- the filter cleaning mechanism 722 includes a sweeper 796 positioned against the filter 718 via one or more rails 797 .
- the sweeper 796 includes a plurality of guide arms 799 slideably arranged in the rails 797 .
- the rails 797 are substantially parallel and offset from the edges of the filter 718 such that the sweeper 796 extends substantially parallel to the inlet surface 730 of the filter 718 .
- the arms 799 of the sweeper 796 are slidably positioned within the rails 797 such that the sweeper 796 may slide along the length of the filter 718 .
- the sweeper 796 includes several blades 798 extending perpendicularly away from the sweeper 796 for contacting the inlet surface 730 of the filter 718 .
- comb teeth or bristles may be used instead of blades 798 .
- the filter 718 includes a plurality of pleats 768 a and valleys 768 b arranged between a first end 718 b of the filter 718 and a second end 718 c of the filter 718 .
- each of the valleys 768 b is arranged between a pair of adjacent pleats 768 a.
- the blades 798 of the sweeper 796 are positioned within the valleys 768 b of the filter 718 in order to remove any dust or debris caught between the pleats 768 a.
- the blades 798 may be bristles of a brush in order to protect the face of the filter 718 .
- the filter cleaning mechanism 722 may include a spring 739 biasing the sweeper 796 toward the first end 718 b of the filter 718 and away from the second end 718 c of the filter 718 . Additionally, the filter cleaning mechanism 722 may include a pull cord 741 coupled to the sweeper 796 . A user may pull the pull cord 741 to translate the sweeper 796 along the filter 718 from the first end 718 b to the second end 718 c.
- the blades 798 move within the valleys 768 b between the first and second ends 718 b, 718 c of the filter 718 in order to remove any dust and/or debris in the valleys 768 b.
- FIGS. 12B illustrates another embodiment of a dust container 828 that is similar to the dust container 28 , with like components identified with like reference numerals plus “800”.
- the filter cleaning mechanism 822 includes a sweeper 896 positioned against the filter 818 via one or more rails 897 .
- the sweeper 896 includes a plurality of guide arms 899 slideably arranged in the rails 897 .
- the rails 897 are substantially parallel and offset from the edges of the filter 818 such that the sweeper 896 extends substantially parallel to the inlet surface 830 of the filter 818 .
- the arms 899 of the sweeper 896 are slidably positioned within the rails 897 such that the sweeper 896 may slide along the length of the filter 818 .
- the sweeper 896 includes several blades 898 extending perpendicularly away from the sweeper 896 for contacting the inlet surface 830 of the filter 818 . In other embodiments, instead of blades 898 , comb teeth or bristles may be used.
- the filter 818 includes a plurality of pleats 868 a and valleys 868 b arranged between a first end 818 b of the filter 818 and a second end 818 c of the filter 818 .
- each of the valleys 868 b is arranged between a pair of adjacent pleats 868 a.
- the blades 898 of the sweeper 896 are positioned within the valleys 868 b of the filter 818 in order to remove any dust or debris caught between the pleats 868 a.
- the blades 898 may be bristles of a brush in order to protect the face of the filter 818 .
- the filter cleaning mechanism 822 may include a spring biasing the sweeper 896 toward the first end 818 b of the filter 818 and away from the second end 818 c of the filter 818 .
- the filter cleaning mechanism 822 may include a pull cord 841 coupled to the sweeper 896 .
- a user may pull the pull cord 841 to translate the sweeper 896 along the filter 818 from the first end 818 b to the second end 818 c.
- the blades 898 move within the valleys 868 b between the first and second ends 818 b, 818 c of the filter 818 in order to remove any dust and/or debris in the valleys 868 b.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Filters For Electric Vacuum Cleaners (AREA)
Abstract
Description
- This application is a continuation of co-pending U.S. patent application Ser. No. 16/226,712, filed on Dec. 20, 2018, which claims priority to U.S. Provisional Patent Application No. 62/609,369, filed on Dec. 22, 2017, and U.S. Provisional Patent Application No. 62/649,891, filed on Mar. 29, 2018, the entire contents of which are incorporated herein by reference.
- The present invention relates to power tools, and more particularly to dust collectors for use with power tools.
- Dust collectors are typically used in tandem with hand-held drilling tools such as rotary hammers to collect dust and other debris during a drilling operation to prevent dust and other debris from accumulating at a worksite. Such dust collectors may be attached to a rotary hammer to position a suction inlet of the collector proximate a drill bit attached to the rotary hammer. Such dust collectors may also include an on-board dust container in which dust and other debris is accumulated. Such dust collectors are often removable from the dust collector to facilitate disposal of the accumulated dust and debris.
- The present invention provides, in one aspect, a dust collector for use with a hand-held power tool, the dust collector including a housing, a telescoping suction pipe coupled to the housing, a suction fan positioned in the housing and operable to generate a vacuum in the suction pipe, a dust container coupled to the housing and positioned upstream of the fan, a filter at least partially arranged in the dust container, and a filter cleaning mechanism including an anvil, a striker moveable between a first striker position, in which the striker is spaced from the anvil, and a second striker position, in which the striker is in contact with the anvil, an actuator moveable between a first actuator position and a second actuator position, in which the actuator is moved closer to the anvil than in the first position, and a first spring biasing the striker toward the anvil. In response to the actuator being depressed, the actuator is moved from the first actuator position to the second actuator position and the first spring moves the striker from the first striker position to the second striker position, such that the anvil impacts the filter, thereby dislodging dust and other debris therefrom.
- The present invention provides, in another aspect, a dust collector for use with a hand-held power tool, the dust collector including a housing, a telescoping suction pipe coupled to the housing, a suction fan positioned in the housing and operable to generate a vacuum in the suction pipe, a dust container coupled to the housing and positioned upstream of the fan, a filter at least partially arranged in the dust container, and a filter cleaning mechanism including a mechanism housing having an internal shoulder, an anvil arranged within the mechanism housing and defining an anvil axis, a striker arranged within the mechanism housing and moveable between a first striker position, in which the striker is engaged against the internal shoulder and spaced from the anvil, and a second striker position, in which the striker is disengaged from the shoulder, in contact with the anvil, and coaxial with the anvil axis, an actuator moveable between a first actuator position and a second actuator position, in which the actuator is moved closer to the anvil than in the first position, the actuator including an actuator contact portion, and a spring biasing the striker against the internal shoulder of the mechanism housing. In response to movement of the actuator from the first actuator position to the second actuator position, the actuator contact portion moves the striker off of the shoulder and the spring moves the striker from the first striker position to the second striker position.
- The present invention provides, in another aspect, a dust collector for use with a hand-held power tool, the dust collector including a housing, a telescoping suction pipe coupled to the housing, a suction fan positioned in the housing and operable to generate a vacuum in the suction pipe, a dust container coupled to the housing and positioned upstream of the fan, a filter at least partially arranged in the dust container, and a filter cleaning mechanism including a carrier pivotably coupled to the dust container about a carrier axis, a cleaning element coupled to the carrier and extending transversely to the carrier axis, the cleaning element element being within the dust container and in contact with the filter, and a knob coupled for co-rotation with the carrier and positioned outside the dust container, wherein rotation of the knob pivots the carrier and the cleaning element about the carrier axis, such that the cleaning element is moved across the filter to dislodge dust and other debris from the filter.
- The present invention provides, in another aspect, a dust collector including a housing, a telescoping suction pipe coupled to the housing, a suction fan positioned in the housing and operable to generate a vacuum in the suction pipe, a dust container coupled to the housing and positioned upstream of the fan, a filter at least partially arranged in the dust container, and a filter cleaning mechanism including a ratchet housing arranged against the filter, a ratchet member configured to rotate within the housing, and a pawl member configured to vibrate the ratchet housing, and thus the filter, in response to rotation of the ratchet member against the pawl member, thereby dislodging dust and other debris from the filter.
- The present invention provides, in another aspect, a dust collector including a housing, a telescoping suction pipe coupled to the housing, a suction fan positioned in the housing and operable to generate a vacuum in the suction pipe, a dust container coupled to the housing and operable to generate a vacuum in the suction pipe, a filter at least partially arranged in the dust container, the filter including a first end, a second end, a plurality of pleats arranged between the first end and the second end, and a plurality of valleys, each valley arranged between a pair of adjacent pleats, and a filter cleaning mechanism including a sweeper having at least one blade arranged within each valley, a biasing member biasing the sweeper toward the first end of the filter and away from the second end of the filter, and a pull cord coupled to the sweeper, the pull cord configured to pull the sweeper along the filter from the first end to the second end, such that the blade moves within the valley between the first end and the second end to dislodge dust and other debris from the filter.
- Other features and aspects of the invention will become apparent by consideration of the following detailed description and accompanying drawings.
-
FIG. 1 is a perspective view of a dust collector in accordance with an embodiment of the invention attached to a rotary power tool. -
FIGS. 2A is a perspective view of a dust container of the dust collector ofFIG. 1 . -
FIG. 2B is a side cross-sectional view of the dust container ofFIG. 2A . -
FIGS. 3A-3E are cross-sectional views of a filter cleaning mechanism of the dust container ofFIG. 2A . -
FIG. 4 is a perspective view of a dust collector in accordance with another embodiment of the invention attached to a rotary power tool. -
FIG. 5A is a perspective view of a dust container of the dust collector ofFIG. 4 . -
FIG. 5B is a cross-sectional view of the dust container 5A. -
FIGS. 6A is a perspective view of a dust container of the dust collector ofFIG. 4 , in accordance with another embodiment of the invention, with portions removed. -
FIG. 6B is a perspective view of the dust container ofFIG. 6A . -
FIG. 7 is a perspective view of a dust container of the dust collector ofFIG. 4 in accordance with another embodiment of the invention, with portions removed. -
FIG. 8 is a perspective of a dust container of the dust collector ofFIG. 4 in accordance with another embodiment of the invention, with portions removed. -
FIGS. 9A is a perspective view of a dust container of the dust collector ofFIG. 1 in accordance with another embodiment of the invention with portions removed. -
FIG. 9B is a cross-sectional view of the dust container ofFIG. 9A . -
FIG. 9C is an enlarged cross-sectional view of the dust container ofFIG. 9A . -
FIG. 10 is a perspective view of a dust container of the dust collector ofFIG. 1 , in accordance with another embodiment of the invention. -
FIGS. 11A is a perspective view of a dust container of the dust collector ofFIG. 4 , in accordance with another embodiment of the invention, with portions removed. -
FIG. 11B is a cross-sectional view of a ratchet assembly of the dust container ofFIG. 11A . -
FIG. 12A is a perspective view of a dust container of the dust collector ofFIG. 4 , in accordance with another embodiment of the invention, with portions removed. -
FIG. 12B is perspective view of a dust container of the dust collector ofFIG. 1 , in accordance with another embodiment of the invention, with portions removed. - Before any embodiments of the invention are explained in detail, it is to be understood that the invention is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the following drawings. The invention is capable of other embodiments and of being practiced or of being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting.
-
FIG. 1 illustrates arotary power tool 100 equipped with a dust suction device ordust collector 10 in accordance with an embodiment of the invention. Thedust collector 10 is separate from therotary power tool 100, and may be attached to and detached from therotary power tool 100 so that thepower tool 100 may be used without thedust collector 10. Accordingly, therotary power tool 100 may or may not be equipped with thedust collector 10 depending on the requirement of the application. - The
dust collector 10 includes ahousing 12 and atelescoping suction pipe 20 coupled to thehousing 12 through which dust and other debris is drawn into thehousing 12. Thedust collector 10 also includes adust container 28, a high efficiency particulate air (“HEPA”)filter 18 positioned in the dust container 28 (FIGS. 2A and 2B ), a suction fan 13 (FIG. 1 ) positioned downstream of thefilter 18, and anelectric motor 14 for rotating thesuction fan 13. When rotated by theelectric motor 14, thesuction fan 13 is operable to generate a vacuum within thesuction pipe 20 to draw dust and other debris into thedust container 28. - With reference to
FIG. 2A , thedust collector 10 further includes afilter cleaning mechanism 22 positioned within thedust container 28 for cleaning thefilter 18. During a drilling and/or hammering operation performed by thepower tool 100, dust-laden air travels through thesuction tube 20 and into adust collection chamber 16 of thedust container 28, where debris is collected. The air stream continues through thefilter 18 before being exhausted out of thecontainer 28 via anoutlet end 26 of thefilter 18. - The
dust container 28 is a selectively attachable to thehousing 12. Thedust container 28 includes aninlet 24 for a dust laden air stream and an outlet defined by the outlet end 26 of thefilter 18. More specifically, thedust container 28 includesopposite side walls 28 a and abottom wall 28 b extending between theside walls 28 a. Theside walls 28 a and thebottom wall 28 b partially define thedust collection chamber 16. Thedust container 28 additionally includesend walls 30 adjacent each of theside walls 28 a and thebottom wall 28 b, and anopening 30 a in one of theend walls 30 through which thefilter 18 is received. Thedust container 28 is operable to collect dust and other debris from a workpiece during the drilling and/or hammering operation performed by thepower tool 100 to maintain the user's work area is substantially clear of dust. Because thedust container 28 is detachable from the housing of thedust collector 10, thedust container 28 may be removed to allow an operator to empty the dust from thedust collection chamber 16. - With reference to
FIGS. 3A-3E , thefilter cleaning mechanism 22 includes amechanism housing 34 having ananvil 32 defining ananvil axis 36 and astriker 40 for striking theanvil 32. Themechanism housing 34 includes afirst end 34 a protruding out of thedust container 28 and an oppositesecond end 34 b proximate abottom side 18 a of thefilter 18. An O-ring 41 is arranged between thefirst end 34 a and thebottom wall 28 b of thedust container 28 to prevent dust and debris collected in thedust collection chamber 16 from escaping thedust container 28. Thestriker 40 is biased toward theanvil 32 by afirst spring 44 that is seated about aperch 46 of anactuator 38, which at least partially surrounds thestriker 40. Theperch 46 defines aperch axis 45 that is offset relative to theanvil axis 36 by an angle a that is between about 0 and 30 degrees. In the illustrated embodiment, the angle a is approximately 10 degrees. - The
striker 40 is biased away fromanvil 40 by asecond spring 50 seated on theanvil 40. In the embodiment illustrated inFIGS. 2A, 2B and 3A-3E , the first andsecond springs second spring 50 has a stiffness that is less than a stiffness of thefirst spring 44. Thestriker 40 is moveable between a first striker position (FIG. 3A ), in which thestriker 40 is spaced from theanvil 40, and a second striker position (FIG. 3E ), in which it is in contact with theanvil 32. Specifically, in the first striker position, anannular shoulder 52 of thestriker 40 is caught against aninternal shoulder 48 of themechanism housing 34 due to the biasing force of thefirst spring 44. In the embodiment illustrated inFIGS. 2A, 2B and 3A-3E , theactuator 38 is a button moveable between a first actuator position and a second actuator position, in which theactuator 38 is moved closer to theanvil 32 than in the first position. Theactuator 38 includes a bellows 42 on its outer surface, which is engageable by a user for depression of theactuator 38. Acap 56 is arranged over thesecond end 34 b of themechanism housing 34 and is engaged against both theanvil 32 and thebottom side 18 a of thefilter 18. -
FIGS. 3A-3E illustrate the operation of thefilter cleaning mechanism 22.FIG. 3A illustrates themechanism 22 in an initial (pre-operational) state. Thestriker 40 is in the first striker position such that theannular shoulder 52 of thestriker 40 is caught against aninternal shoulder 48 of themechanism housing 34 due to the biasing force of thefirst spring 44. As theactuator 38 is initially depressed from its first position toward its second position, thefirst spring 44 becomes increasingly compressed and thestriker 40 remains on the internal shoulder 48 (FIGS. 3B and 3C ) until an annulartapered cam surface 38 a on the interior of theactuator 38, which partly defines the bore in which thefirst spring 44 is located, contacts an annular tapered follower surface 40 a on the exterior of thestriker 40, pushing thestriker 40 off the internal shoulder 48 (FIG. 3D ). - Once the
striker 40 has been pushed off theinternal shoulder 48, thefirst spring 44 rebounds, releasing the stored potential energy of thefirst spring 44 and displacing thestriker 40 toward the second striker position, in which it strikes the anvil (FIG. 3E ). In addition, because the spring constant of thesecond spring 50 is less than the spring constant of thefirst spring 44, the reboundingfirst spring 44 transfers part of its stored energy into thesecond spring 50, causing thesecond spring 50 to compress. As thestriker 40 travels between the position in FIG. 3D, in which it has been pushed off theinternal shoulder 48, and the second striker position inFIG. 3E , thestriker 40 is reoriented by aninternal side 54 of theactuator 38 to be coaxial with theanvil axis 36, such that thestriker 40 moves along theinternal side 54 of the actuator and aninternal side 53 of themechanism housing 34 until it strikes the anvil 32 (FIG. 3E ). The force applied to theanvil 32 by thestriker 40 is in turn applied to thecap 56 by theanvil 32 and thus applied to thebottom side 18 a of thefilter 18 by thecap 56, thereby dislodging dust and other debris from thefilter 18. When theactuator 38 is released by the operator, thefirst spring 44 is almost completely expanded and thesecond spring 50 is then able to release its stored potential energy to push thestriker 40 back toward the first striker position, which in turn causes thefirst spring 44 to push theactuator 38 back toward the first actuator position, returning thefilter cleaning mechanism 22 to the state shown inFIG. 3A . Around the time when thestriker 40 reaches the position shown inFIG. 3D , thestriker 40 is redirected underneath theinternal shoulder 48 of themechanism housing 34, as shown inFIGS. 3C-3A , because theperch axis 46 is oblique with respect to theanvil axis 36, thus causing thefirst spring 44 to direct thestriker 40 away from theanvil axis 36 and underneath theshoulder 48. -
FIGS. 4, 5A and 5B illustrates another embodiment of adust collector 10′ for use with arotary power tool 100′, with like components designated with an apostrophe. Thedust collector 10′ anddust container 28′ are substantially similar to thedust collector 10 anddust container 28 ofFIGS. 1-3 except for the following differences explained below. Specifically, theactuator 38′ of the filter cleaningcleaning mechanism 22′ is positioned in anend wall 30′ instead of thebottom wall 28 b′. Also, thedust container 28′ has an approximate triangle shape instead of the approximately L-shape of thedust container 28. -
FIGS. 6A and 6B illustrate another embodiment of adust container 128 that is similar in some respects todust container 28′, with like components identified with like reference numerals plus “100” and the apostrophe removed. Thedust container 128 itself is largely identical todust container 28′, while thefilter cleaning mechanism 122 has changed, as described below. In the embodiment ofFIGS. 6A and 6B , thefilter cleaning mechanism 122 includes acarrier 158 pivotably supported within thedust container 128 about a carrier axis 160 (FIG. 6A ). More specifically, thecarrier 158 is pivotably supported by at least one of theside walls 128 a of thedust container 128. In the embodiment illustrated inFIGS. 6A and 6B , thecarrier 158 is pivotably supported by two of theside walls 128 a. Thecarrier 158 includes acleaning element 162 extending away from thecarrier axis 160 for contacting aninlet surface 131 of thefilter 118. Thefilter cleaning mechanism 122 also includes one ormore knobs 164, with each knob arranged on and rotatably supported by the exterior of one of theside walls 128 a. Theknobs 164 are coupled for movement with thecarrier 158, such that pivoting the one ormore knobs 164 about thecarrier axis 160 causes pivoting of thecarrier 158 and thecleaning element 162 about thecarrier axis 160 to sweep debris from theinlet surface 124 of thefilter 118. In the illustrated embodiment, thefilter 118 includes a plurality ofpleats 168 a and a plurality ofvalleys 168 b arranged along thefilter 118, with eachvalley 168 b being arranged between a pair ofadjacent pleats 168 a. In the illustrated embodiment, thecleaning element 162 is a plurality ofcomb teeth 162 a that are configured to sweep through thevalleys 168 b when thecomb teeth 162 a are pivoted about thecarrier axis 160. As such, rotation of theknob 164 allows thecomb teeth 162 a to sweep debris from thevalleys 168 b. -
FIG. 7 illustrates another embodiment of adust container 228 that is similar in some respects todust container 28′, with like components identified with like reference numerals plus “200” and the apostrophe removed. Thedust container 228 itself is largely identical todust container 28′, while thefilter cleaning mechanism 222 has changed, as described below. With reference toFIG. 7 , thecleaning element 262 on thecarrier 258 of thedust container assembly 228 is a brush including multiple groups ofbristles 270. Thecarrier 258 is pivotably supported by at least one of theside walls 228 a of thedust container 228. In the shown embodiments, thecarrier 258 is pivotably supported by two of theside walls 228 a. Pivoting the one ormore knobs 264 back and forth about thecarrier axis 260 allows thecleaning element 262 to sweep theinlet surface 230 of thefilter 218. In some embodiments, thebristles 270 are configured to sweep through thevalleys 268 b of thefilter 218 as thecleaning element 262 pivots about thecarrier axis 260. Thecarrier 258 is supported by the one ormore knobs 264 and theknobs 264 are keyed to ashaft 272 of thecarrier 258 through a plurality offlats 274, thus ensuring co-rotation of thecarrier 258 and theknobs 264. Thecleaning element 262 has a predefined range of rotation about thecarrier axis 260 and one of thecleaning element 262,carrier 258, orknob 264 includes stops to prevent thecleaning element 262 from rotating beyond the range of rotation. For example, the stops may be arranged such that thebristles 270 are prevented from leaving theinlet surface 231 of thefilter 218. Seals are included between thecarrier 258 and thedust container 228 to prevent leakage of air or debris outside thedust container 228. -
FIGS. 8 illustrates yet another embodiment of adust container 328 that is similar in some respects todust container 28′, with like components identified with like reference numerals plus “300” and the apostrophe removed. Thedust container 328 itself is largely identical todust container 28′, while thefilter cleaning mechanism 322 has changed, as described below. With reference toFIG. 8 , thecleaning element 362 on thecarrier 358 of thedust container 328 is a plurality ofcomb teeth 362 a. Thecleaning element 362 is attached to thecarrier 358, which is coupled to the one ormore knob 364. Thecarrier 358 is pivotably supported by at least one of theside walls 328 a of thedust container 328 via the one or more knobs 364. In the embodiment illustrated inFIG. 8 , thecarrier 358 is pivotably supported by two of theside walls 328 a via oppositely arrangedknobs 364. Rotating thecarrier 358 back and forth rotates thecomb teeth 362 a to comb thefilter 318 between itsrespective pleats 368 a and remove debris from thevalleys 368 b. Thecleaning element 362 is supported by the dustcontainer side walls 328 a, and theknob 364 is integrated withcarrier 358. Thecleaning element 362 has a predefined range of rotation about thecarrier axis 360 and one of thecleaning element 362,carrier 358, orknobs 364 include stops to prevent thecleaning element 362 from rotating beyond the range of rotation. For example, the stops may be arranged such that thecomb teeth 362 a are prevented from moving off of theplanar surface 330 of thefilter 318. Seals are included between thecarrier 358 and thedust container 328 to prevent leakage of air or debris outside thedust container 328. -
FIGS. 9A-9C illustrates another embodiment of adust container 428 that is similar in some respects todust container 28, with like components identified with like reference numerals plus “400.” Thedust container 428 itself is largely identical todust container 28′, while the filter cleaning mechanism 422 has changed, as described below. With reference toFIGS. 9A-9C , thecleaning element 462 on thecarrier 458 is a plurality ofcomb teeth 462 a arranged within valleys 468 b between pleats 468 a of thefilter 418. Thecleaning element 462 is attached to thecarrier 458, which is coupled to theknob 464. Thecarrier 458 is pivotably supported by thebottom wall 428 b of thedust container 428. Similarly to the embodiments shown inFIGS. 6-8 , pivoting thecarrier 458 back and forth about thecarrier axis 460 pivots thecleaning element 462 to wipe the valleys 468 b between the pleats 468 a. With reference toFIG. 9C , eachtooth 462 a is, within each valley 468 b, configured to sweep approximately 67% of the surface area of each pleat 468 a of thefilter 418. -
FIG. 10 illustrates yet another embodiment of adust container 528 that is similar in some respects todust container 28, with like components identified with like reference numerals plus “500.” Thedust container 528 itself is largely identical todust container 28′, while the filter cleaning mechanism 522 has changed, as described below. With reference toFIG. 10 , thecleaning element 562 on thecarrier 558 of thedust container 528 is a brush including multiple groups of bristles 570. Thecleaning element 562 is attached to thecarrier 558, which is coupled to theknob 564. Thecarrier 564 includes stops to limit the degree of rotational freedom it has aboutcarrier axis 560. Thecarrier 558 is pivotably supported by thebottom wall 528 b of thedust container 528. As such, rotation of thecarrier 558 also imparts rotational movement to thecleaning element 562 across thefilter 518, sweeping debris from the filter pleats 568 a. Rather than being supported by the bottom wall of thedust container 528, thecarrier 558 is rotatably supported by aclip 582, which is fastened to ascrew boss 584 on thedust container 528. -
FIGS. 11A and 11B illustrate another embodiment of adust container 628 that is similar to thedust container 28′, with like components identified with like reference numerals plus “600” and the apostrophe removed. Thedust container 628 itself is largely identical todust container 28′, while thefilter cleaning mechanism 622 has changed, as described below. Thefilter cleaning mechanism 622 includes aratchet assembly 688 for imparting vibration to thefilter 618 to shake or dislodge dust or other debris from the inlet surface of thefilter 618. Theratchet assembly 688 include aratchet housing 689 arranged against thefilter 618. Theratchet housing 689 includes apawl 690 positioned on afirst end 689 a of theratchet housing 689, afirst spring 691 positioned on asecond end 689 b of theratchet housing 689, and aratchet member 692 positioned between thepawl 690 and thefirst spring 691. Thus, thefirst spring 691 biases theratchet member 692 against thepawl 690. Theratchet member 692 may rotate relative to theratchet housing 689 and thepawl 690. Theratchet housing 689 is rotationally constrained with respect to thedust container 628, but is permitted to move axially. Specifically, theratchet member 692 andpawl 690 include mated teeth that are configured to slide relative to each other in response to rotation of theratchet member 692 relative to thepawl 690, imparting axial displacement to theratchet housing 689. Ashaft 693 extends into theratchet housing 689 having afirst end 693 a extending into theratchet housing 689 and coupled to theratchet member 692, and an oppositesecond end 693 b coupled to aknob 694. Thus, rotation of theknob 694 imparts rotation to theshaft 693, which rotates theratchet member 692 relative to theratchet housing 689. Theratchet assembly 688 further includes asecond spring 695 coupled to an external surface of thehousing 689 and surrounding theshaft 693. Thesecond spring 695 biases thefirst end 689 a of theratchet housing 689 against thefilter 618. In the illustrated embodiment, thesecond spring 695 is a resilient clip. In some embodiments, instead of a resilient clip, a plurality of wave washers can be used to bias thehousing ratchet 689 toward thefilter 618. - As a user rotates the
knob 694, thefirst spring 691 biases theratchet member 692 against thepawl 690, causing the teeth of theratchet member 692 andpawl 690 to slide relative to each other in response to rotation of theratchet member 692 relative to thepawl 690. This in turn causes theratchet housing 689 to undergo reciprocating axial displacement against thefilter 618 to dislodge dust and other debris from the inlet surface of thefilter 618. -
FIGS. 12A illustrates another embodiment of adust container 728 that is similar to thedust container 28′, with like components identified with like reference numerals plus “700” and the apostrophe removed. With reference toFIG. 12A , thefilter cleaning mechanism 722 includes asweeper 796 positioned against thefilter 718 via one ormore rails 797. Specifically, thesweeper 796 includes a plurality ofguide arms 799 slideably arranged in therails 797. Therails 797 are substantially parallel and offset from the edges of thefilter 718 such that thesweeper 796 extends substantially parallel to theinlet surface 730 of thefilter 718. Thearms 799 of thesweeper 796 are slidably positioned within therails 797 such that thesweeper 796 may slide along the length of thefilter 718. Thesweeper 796 includesseveral blades 798 extending perpendicularly away from thesweeper 796 for contacting theinlet surface 730 of thefilter 718. In other embodiments, instead ofblades 798, comb teeth or bristles may be used. - As shown in
FIG. 12A , thefilter 718 includes a plurality of pleats 768 a and valleys 768 b arranged between afirst end 718 b of thefilter 718 and asecond end 718 c of thefilter 718. Specifically, each of the valleys 768 b is arranged between a pair of adjacent pleats 768 a. Theblades 798 of thesweeper 796 are positioned within the valleys 768 b of thefilter 718 in order to remove any dust or debris caught between the pleats 768 a. In some embodiments, theblades 798 may be bristles of a brush in order to protect the face of thefilter 718. In some embodiments, thefilter cleaning mechanism 722 may include aspring 739 biasing thesweeper 796 toward thefirst end 718 b of thefilter 718 and away from thesecond end 718 c of thefilter 718. Additionally, thefilter cleaning mechanism 722 may include apull cord 741 coupled to thesweeper 796. A user may pull thepull cord 741 to translate thesweeper 796 along thefilter 718 from thefirst end 718 b to thesecond end 718 c. As thesweeper 796 is moving, either via the biasing member or thepull cord 741, theblades 798 move within the valleys 768 b between the first and second ends 718 b, 718 c of thefilter 718 in order to remove any dust and/or debris in the valleys 768 b. -
FIGS. 12B illustrates another embodiment of adust container 828 that is similar to thedust container 28, with like components identified with like reference numerals plus “800”. With reference toFIG. 12B , the filter cleaning mechanism 822 includes asweeper 896 positioned against thefilter 818 via one ormore rails 897. Specifically, thesweeper 896 includes a plurality ofguide arms 899 slideably arranged in therails 897. Therails 897 are substantially parallel and offset from the edges of thefilter 818 such that thesweeper 896 extends substantially parallel to theinlet surface 830 of thefilter 818. Thearms 899 of thesweeper 896 are slidably positioned within therails 897 such that thesweeper 896 may slide along the length of thefilter 818. Thesweeper 896 includesseveral blades 898 extending perpendicularly away from thesweeper 896 for contacting theinlet surface 830 of thefilter 818. In other embodiments, instead ofblades 898, comb teeth or bristles may be used. - As shown in
FIG. 12B , thefilter 818 includes a plurality ofpleats 868 a andvalleys 868 b arranged between afirst end 818 b of thefilter 818 and asecond end 818 c of thefilter 818. Specifically, each of thevalleys 868 b is arranged between a pair ofadjacent pleats 868 a. Theblades 898 of thesweeper 896 are positioned within thevalleys 868 b of thefilter 818 in order to remove any dust or debris caught between thepleats 868 a. In some embodiments, theblades 898 may be bristles of a brush in order to protect the face of thefilter 818. In some embodiments, the filter cleaning mechanism 822 may include a spring biasing thesweeper 896 toward thefirst end 818 b of thefilter 818 and away from thesecond end 818 c of thefilter 818. Additionally, the filter cleaning mechanism 822 may include apull cord 841 coupled to thesweeper 896. A user may pull thepull cord 841 to translate thesweeper 896 along thefilter 818 from thefirst end 818 b to thesecond end 818 c. As thesweeper 896 is moving, either via the biasing member or thepull cord 841, theblades 898 move within thevalleys 868 b between the first and second ends 818 b, 818 c of thefilter 818 in order to remove any dust and/or debris in thevalleys 868 b. - Various features of the invention are set forth in the following claims.
Claims (17)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US17/557,564 US20220111476A1 (en) | 2017-12-22 | 2021-12-21 | Dust collector with filter cleaning mechanism |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201762609369P | 2017-12-22 | 2017-12-22 | |
US201862649891P | 2018-03-29 | 2018-03-29 | |
US16/226,712 US11235433B2 (en) | 2017-12-22 | 2018-12-20 | Dust collector with filter cleaning mechanism |
US17/557,564 US20220111476A1 (en) | 2017-12-22 | 2021-12-21 | Dust collector with filter cleaning mechanism |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/226,712 Continuation US11235433B2 (en) | 2017-12-22 | 2018-12-20 | Dust collector with filter cleaning mechanism |
Publications (1)
Publication Number | Publication Date |
---|---|
US20220111476A1 true US20220111476A1 (en) | 2022-04-14 |
Family
ID=66949813
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/226,712 Active 2039-06-01 US11235433B2 (en) | 2017-12-22 | 2018-12-20 | Dust collector with filter cleaning mechanism |
US17/557,564 Abandoned US20220111476A1 (en) | 2017-12-22 | 2021-12-21 | Dust collector with filter cleaning mechanism |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/226,712 Active 2039-06-01 US11235433B2 (en) | 2017-12-22 | 2018-12-20 | Dust collector with filter cleaning mechanism |
Country Status (2)
Country | Link |
---|---|
US (2) | US11235433B2 (en) |
CN (1) | CN210025833U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20220314384A1 (en) * | 2021-04-01 | 2022-10-06 | Milwaukee Electric Tool Corporation | Integrated dust extractor and power tool |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11235433B2 (en) * | 2017-12-22 | 2022-02-01 | Milwaukee Electric Tool Corporation | Dust collector with filter cleaning mechanism |
USD936313S1 (en) * | 2018-04-27 | 2021-11-16 | Black & Decker Inc. | Dust extractor |
DE102018125085A1 (en) * | 2018-10-10 | 2020-04-16 | Bystronic Laser Ag | Fixing device, machining head, machine tool and method for fixing a workpiece |
CN215968574U (en) | 2018-11-19 | 2022-03-08 | 米沃奇电动工具公司 | Dust collector suitable for use with a hand held power tool |
USD1042073S1 (en) * | 2020-09-10 | 2024-09-17 | Robert Bosch Gmbh | Power tool accessory |
DE102020213170A1 (en) * | 2020-10-19 | 2022-04-21 | Robert Bosch Gesellschaft mit beschränkter Haftung | suction device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090183633A1 (en) * | 2007-12-24 | 2009-07-23 | Schiller Marc I | Filter comb apparatus and method |
US20210178568A1 (en) * | 2017-12-21 | 2021-06-17 | Makita Corporation | Dust collector for electric power tool and electric power tool |
Family Cites Families (53)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2384707A (en) * | 1942-09-29 | 1945-09-11 | Laurence A Sweet | Automatic center punch |
US3172204A (en) * | 1963-06-21 | 1965-03-09 | John A Frey | Automatic center punch and the like |
US3639940A (en) * | 1969-08-22 | 1972-02-08 | Tennant Co | Filter chamber |
US3710552A (en) * | 1970-08-27 | 1973-01-16 | R Genton | Air filter and dust collector |
US3797064A (en) * | 1972-10-20 | 1974-03-19 | Scott & Fetzer Co | Filter bag cleaning means |
US4099940A (en) * | 1977-03-17 | 1978-07-11 | Fmc Corporation | Impulse filter cleaner |
DE2906123A1 (en) | 1979-02-17 | 1980-09-04 | Festo Maschf Stoll G | FILTERS FOR AIR AND ELECTRIC TOOLS |
US4383840A (en) * | 1981-10-28 | 1983-05-17 | Jones Donald W | Dust collector with tubular bag and cage filters and beater rods |
GB8316948D0 (en) | 1983-06-22 | 1983-07-27 | Uk Asbestos Plant & Machinery | Disposal of airborne dust |
SE451947B (en) * | 1984-05-30 | 1987-11-09 | Nederman Philip & Co Ab | Filter cleaning device |
US6315647B1 (en) | 1998-08-20 | 2001-11-13 | Pierangelo Ghilardi | Sanding machine |
JP3773373B2 (en) | 1999-03-19 | 2006-05-10 | 株式会社共立 | Air cleaner |
GB9926009D0 (en) * | 1999-11-04 | 2000-01-12 | Vax Ltd | Dust filter |
US7520017B2 (en) * | 2002-09-06 | 2009-04-21 | Tennant | Street sweeper recirculation flap |
ITMI20030961A1 (en) | 2003-05-14 | 2004-11-15 | Guido Valentini | MOTORIZED TOOL WITH SUCTION CAPACITY AND DUST COLLECTION. |
US7186281B2 (en) | 2003-07-02 | 2007-03-06 | San Ford Machinery Co., Ltd. | Dust-removing device for the dust-collecting tank of a dust-collecting machine |
TWM278467U (en) | 2005-05-19 | 2005-10-21 | Oav Equipment & Tools Inc | Cleaning apparatus for dust collector |
JP4747850B2 (en) | 2006-01-20 | 2011-08-17 | 日立工機株式会社 | Dust collector |
US7282074B1 (en) | 2006-04-28 | 2007-10-16 | Witter Robert M | Auxiliary dust collection system |
JP5185551B2 (en) | 2007-03-19 | 2013-04-17 | 日立工機株式会社 | Dust collector |
GB2450717A (en) | 2007-07-04 | 2009-01-07 | Black & Decker Inc | Power cutter including air filter cleaning mechanism |
EP2011992B1 (en) | 2007-07-04 | 2014-11-19 | Black & Decker, Inc. | Power cutter |
GB2450721A (en) | 2007-07-04 | 2009-01-07 | Black & Decker Inc | Power cutter with adaptor for mounting a cutting blade |
US8272134B2 (en) | 2007-07-04 | 2012-09-25 | Black & Decker Inc. | Power cutter |
GB2450720A (en) * | 2007-07-04 | 2009-01-07 | Black & Decker Inc | Power cutter with pleated filter |
US7962994B2 (en) | 2007-10-11 | 2011-06-21 | Black & Decker Inc. | Vacuum electronic switch detection system |
US7644469B2 (en) * | 2007-10-11 | 2010-01-12 | Black & Decker Inc. | Vacuum electronics isolation method |
US8327487B2 (en) * | 2008-01-31 | 2012-12-11 | Black & Decker Inc. | Vacuum filter cleaning device |
US9776296B2 (en) * | 2008-05-09 | 2017-10-03 | Milwaukee Electric Tool Corporation | Power tool dust collector |
US8869786B2 (en) * | 2008-07-03 | 2014-10-28 | Mitch Faiweather | Chop saw with dust collection system |
US8561512B2 (en) | 2009-08-18 | 2013-10-22 | Dustless Depot Llc | Cutoff saw and stand with integrated dust filtration system |
US9221110B2 (en) | 2009-10-02 | 2015-12-29 | JPL Global, LLC | Power saw apparatus with integrated dust collector |
DE202010009989U1 (en) | 2010-07-07 | 2012-02-22 | Alexander Hartwig | Dust filter and device for its cleaning |
DE102011003223A1 (en) | 2011-01-27 | 2012-08-02 | Robert Bosch Gmbh | Method and device for removing removing particles resulting from floor or wall processing of a surface by means of a motorized grinding tool |
JP5739306B2 (en) * | 2011-04-26 | 2015-06-24 | 株式会社マキタ | Dust collector for power tool and power tool |
DE102011075013A1 (en) | 2011-04-29 | 2012-10-31 | BSH Bosch und Siemens Hausgeräte GmbH | Filter for filtering device filtering air with flat, air permeable filter material, has transmission element mechanically coupled with filter material, where pulse is transmitted over transmission element |
US9038236B2 (en) * | 2012-04-25 | 2015-05-26 | Shop Vac Corporation | Filter shaker |
US9545710B2 (en) * | 2012-05-18 | 2017-01-17 | Mark Boice | Impact tool |
CA2904426C (en) * | 2013-03-11 | 2021-04-20 | James Hardie Technology Limited | A cutting apparatus |
WO2015122539A1 (en) * | 2014-02-17 | 2015-08-20 | 株式会社マキタ | Dust collector and work tool provided with dust collector |
US9550139B2 (en) * | 2014-03-04 | 2017-01-24 | Vincent James Madonia | Apparatus and system for cleaning a filter |
JP6323175B2 (en) * | 2014-05-29 | 2018-05-16 | 富士通株式会社 | Electronic device and filter device |
EP3009058B1 (en) | 2014-10-13 | 2021-02-24 | Guido Valentini | Vacuum cleaner pneumatically connected to a power tool, method for controlling operation parameters of such a vacuum cleaner and power tool for pneumatic connection to such a vacuum cleaner |
WO2017040124A1 (en) | 2015-08-31 | 2017-03-09 | Pcms Holdings, Inc. | System and method for detection of cloned devices |
US10239136B2 (en) | 2015-08-31 | 2019-03-26 | JPL Global, LLC | Circular saw apparatus with integrated multistage filtration system |
KR20240033150A (en) | 2015-08-31 | 2024-03-12 | 제이피엘 글로벌, 엘엘씨 | Saw apparatus |
DE102015217825A1 (en) * | 2015-09-17 | 2017-03-23 | Robert Bosch Gmbh | Filter device for a suction device |
US11297990B2 (en) * | 2016-12-01 | 2022-04-12 | Skybest Electric Appliance Co., Ltd. | Dust collector and self-cleaning method for filter thereof |
CN206296530U (en) | 2016-12-27 | 2017-07-04 | 天津晶雅科技发展有限公司 | A kind of Metal Cutting dust removal device |
EP3420874A1 (en) * | 2017-06-29 | 2019-01-02 | HILTI Aktiengesellschaft | Filter cleaning |
US10864609B2 (en) * | 2017-09-28 | 2020-12-15 | Makita Corporation | Dust collector |
US11235433B2 (en) * | 2017-12-22 | 2022-02-01 | Milwaukee Electric Tool Corporation | Dust collector with filter cleaning mechanism |
DE102018215308A1 (en) * | 2018-09-10 | 2020-03-12 | Robert Bosch Gmbh | Vacuum cleaner |
-
2018
- 2018-12-20 US US16/226,712 patent/US11235433B2/en active Active
- 2018-12-24 CN CN201822177688.7U patent/CN210025833U/en active Active
-
2021
- 2021-12-21 US US17/557,564 patent/US20220111476A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090183633A1 (en) * | 2007-12-24 | 2009-07-23 | Schiller Marc I | Filter comb apparatus and method |
US20210178568A1 (en) * | 2017-12-21 | 2021-06-17 | Makita Corporation | Dust collector for electric power tool and electric power tool |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20220314384A1 (en) * | 2021-04-01 | 2022-10-06 | Milwaukee Electric Tool Corporation | Integrated dust extractor and power tool |
US11872665B2 (en) * | 2021-04-01 | 2024-01-16 | Milwaukee Electric Tool Corporation | Integrated dust extractor and power tool |
US20240123560A1 (en) * | 2021-04-01 | 2024-04-18 | Milwaukee Electric Tool Corporation | Integrated dust extractor and power tool |
Also Published As
Publication number | Publication date |
---|---|
US20190193225A1 (en) | 2019-06-27 |
US11235433B2 (en) | 2022-02-01 |
CN210025833U (en) | 2020-02-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20220111476A1 (en) | Dust collector with filter cleaning mechanism | |
EP3323335B1 (en) | Cleaning device | |
US7909114B2 (en) | Drilling device | |
CN108065862B (en) | Vacuum cleaner | |
US8397342B2 (en) | Debris removal system for power tool | |
US11517158B2 (en) | Vacuum cleaning device | |
JP6793964B2 (en) | Dust collector and vacuum dust remover | |
CN111565889B (en) | Dust collecting device for electric tool and electric tool | |
US11627863B2 (en) | Dust collection box | |
CN217645116U (en) | Vacuum tool | |
US20180078102A1 (en) | Vacuum cleaning device | |
WO2020167875A1 (en) | Power tool assembly including a dust collector | |
JP2004121722A (en) | Dust collector and vacuum cleaner using the same | |
EP3764860A1 (en) | Vacuum cleaning apparatus | |
CN111990923A (en) | Dust collector | |
JP2011188952A (en) | Dust collecting device and vacuum cleaner | |
WO2013190827A1 (en) | Dust-collecting device and electric vacuum cleaner equipped with dust collecting device | |
JP2024515498A (en) | Integrated dust collector and power tool | |
WO2014030552A1 (en) | Electric vacuum cleaner | |
JP3739729B2 (en) | Handheld cleaner with dust collection function | |
US20130306107A1 (en) | Vacuum Attachment System | |
TWM560338U (en) | Dust sweeping device of dust collector | |
CN212913059U (en) | Dust collector | |
US20230200609A1 (en) | Dust collecting device for a power tool | |
WO2022064778A1 (en) | Handheld suction device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STPP | Information on status: patent application and granting procedure in general |
Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION |
|
AS | Assignment |
Owner name: MILWAUKEE ELECTRIC TOOL CORPORATION, WISCONSIN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BEESON, JOSEPH R.;RICHARDS, DARYL S.;SIGAFOOSE, TYLER S.;AND OTHERS;SIGNING DATES FROM 20190115 TO 20190215;REEL/FRAME:061126/0392 |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: NON FINAL ACTION MAILED |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: RESPONSE TO NON-FINAL OFFICE ACTION ENTERED AND FORWARDED TO EXAMINER |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: NON FINAL ACTION MAILED |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: RESPONSE TO NON-FINAL OFFICE ACTION ENTERED AND FORWARDED TO EXAMINER |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: FINAL REJECTION MAILED |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: ADVISORY ACTION MAILED |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: NON FINAL ACTION MAILED |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |