Power tool dust collector

• US 9,776,296 B2
• Filed: 09/06/2012
• Issued: 10/03/2017
• Est. Priority Date: 05/09/2008
• Status: Active Grant

• Current Assignee: AEG Electric Tools GmbH (Techtronic Industries Company Limited), Milwaukee Electric Tool Corporation (Techtronic Industries Company Limited)
• Original Assignee: Milwaukee Electric Tool Corporation (Techtronic Industries Company Limited)
• Inventors: Brewster, Michael R., Wong, Tsz Kin, Lam, Chin Hung, Wattenbach, Brian P., Verbrugge, Brandon L., Vgele, Roland, Limberg, Kurt, Chen, Ming Cong
• Primary Examiner(s): Long, Robert
• Application Number:
  US13/604,674
• Publication Number:
  US 20130213683A1
• Time in Patent Office: 1,853 Days
• Field of Search: 173 20, 173 29, 173178, 173 48, 173 47, 173217, 173131, 173132, 173170-171, 173198
• CPC Class Codes: B23Q 11/00 Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work accessories specially designed for sawing machines or sawing devices B23D59/00; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools in respect of boring or drilling machines B23B47/32 takes precedence; safety devices in general F16P
• CPC Class Codes: B23Q 11/0046 by sucking
• CPC Class Codes: B25F 5/02 Construction of casings, bodies or handles B25F5/006, B25F5/008 take precedence
• CPC Class Codes: B25F 5/026 in the form of an auxiliary handle B25F5/024 takes precedence
• CPC Class Codes: B25G 3/20 comprising clamping or contracting means acting concentrically on the handle or socket
• CPC Class Codes: B25G 3/32 in association with, or including, tang, bolt, or other member passing axially through whole length of handle
• CPC Class Codes: Y02P 70/10 Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Abstract

A power tool assembly includes a hand-held power tool, a dust collector removably coupled to the power tool, and first and second power tool battery packs each of which is interchangeably coupled with the power tool and the dust collector for separately powering the power tool and the dust collector, respectively.

Claims

1. A power tool assembly, comprising:

a hand-held power tool;

a dust collector removably coupled to the power tool, the dust collector including

a housing,

a telescoping suction pipe coupled to the housing,

an electric motor positioned in the housing,

a suction fan driven by the electric motor and operable to generate a vacuum in the suction pipe,

a dust container coupled to the housing and positioned upstream of the suction fan, and

a high efficiency particulate air filter supported by at least one of the housing or the dust container, the filter being removable from the one of the housing or the dust container for at least one of servicing and replacement; and

first and second power tool battery packs each of which is interchangeably coupled with the power tool and the dust collector for separately powering the power tool and the dust collector for concurrent operation of the power tool and the dust collector.

2. The power tool assembly of claim 1, wherein the first and second power tool battery packs are identical.

3. The power tool assembly of claim 1, wherein the power tool and the dust collector are coupled in a side-by-side relationship.

4. The power tool assembly of claim 1, wherein each of the first and second battery packs includes three lithium-ion battery cells.

5. The power tool assembly of claim 1, wherein the power tool is a rotary power tool.

6. The power tool assembly of claim 5, wherein the rotary power tool is one of a rotary hammer and a hammer drill.

7. The power tool assembly of claim 1, wherein the suction pipe is coupled to the housing for telescoping movement along a first axis, and wherein the second battery pack is removably coupled to the housing along a second axis oriented substantially normal to the first axis.

8. The power tool assembly of claim 7, wherein the power tool is a rotary power tool defining a rotational axis, and wherein the first axis is substantially parallel with the rotational axis of the power tool.

9. The power tool assembly of claim 1, wherein the dust collector further includes

an adapter including a first portion coupled to the housing and a second portion, and

an auxiliary handle coupled to the second portion of the adapter and the power tool, the adapter and the auxiliary handle supporting the power tool in a side-by-side relationship with the dust collector.

10. The power tool assembly of claim 9, wherein the housing includes a first side and an opposite second side, and wherein the first portion of the adapter is interchangeably connectable to the first and second sides of the housing to thereby support the power tool adjacent a chosen one of the first and second sides of the housing.

11. The power tool assembly of claim 10, further comprising a suction head coupled to a distal end of the suction pipe, wherein the suction head is repositionable between first and second orientations to accommodate placement of the power tool adjacent the first and second sides of the housing, respectively.

12. The power tool assembly of claim 11, wherein the suction head is pivotably coupled to the distal end of the suction pipe between the first and second orientations.

13. The power tool assembly of claim 12, further comprising a detent arrangement for maintaining the suction head in at least one of the first and second orientations.

14. The power tool assembly of claim 13, wherein the detent arrangement includes first and second detent members on the suction head, and first and second detent recesses positioned on opposite sides of the suction pipe, wherein the first detent member is received in the first detent recess to maintain the suction head in the first orientation, and wherein the second detent member is received in the second detent recess to maintain the suction head in the second orientation.

15. The power tool assembly of claim 14, further comprising an end cap coupled to the distal end of the suction pipe between the suction pipe and the suction head, wherein the first and second recesses are both defined in the end cap.

16. The power tool assembly of claim 10, wherein the adapter includes a fixed clamp member and an opposed, movable clamp member for clamping the adapter to one of the first and second sides of the housing.

17. The power tool assembly of claim 16, wherein each of the first and second sides of the housing includes a first notch in which the fixed clamp member is received, and a second notch in which the movable clamp member is received.

18. The power tool assembly of claim 17, wherein the adapter includes a cam and a follower for actuating the movable clamp member between an open position in which it is displaced from the second notch and disengaged from the housing, and a closed position in which the movable clamp member is received within the second notch and engaged with the housing.

19. The power tool assembly of claim 18, wherein the movable clamp member is integrally formed with the follower as a single piece.

20. The power tool assembly of claim 18, wherein the adapter includes a resilient member that biases the movable clamp member away from the fixed clamp member and toward the open position.

21. The power tool assembly of claim 9, wherein the auxiliary handle includes a cylindrical band received within an arcuate slot in the adapter and a rotatable grip for constricting and expanding the band, and wherein a neck of the power tool is clamped by the band.

22. The power tool assembly of claim 9, wherein the handle includes a shaft extending from the second portion of the adapter and a clamp member movable relative to the shaft, and wherein the power tool is clamped between the movable clamp member and the adapter.

23. The power tool assembly of claim 22, wherein the adapter includes a fixed clamp member, and wherein the power tool is clamped between the movable clamp member and the fixed clamp member.

24. The power tool assembly of claim 23, wherein the shaft includes a threaded portion, wherein the handle includes a grip having therein a threaded insert engaged with the threaded portion of the shaft, and wherein the movable clamp member is movable along the shaft in response to relative rotation between the grip and the shaft for clamping the power tool between the movable clamp member and the fixed clamp member.

25. The power tool assembly of claim 24, wherein the handle includes a spacer positioned between the movable clamp member and the grip.

26. The power tool assembly of claim 1, wherein the dust collector further includes

a switch electrically connecting the motor with the second battery to activate the motor in response to detecting telescoping movement of the suction pipe relative to the housing.

27. The power tool assembly of claim 26, wherein the switch is a first switch, wherein the dust collector further includes a second switch electrically connected with the motor, the second battery, and the first switch, and wherein the second switch is toggled between a first switching position in which the electric motor remains deactivated irrespective of actuation of the first switch, a second switching position in which the electric motor may be activated and deactivated automatically in response to actuation of the first switch, and a third switching position in which the electric motor may be activated irrespective of actuation of the first switch.

28. The power tool assembly of claim 27, further comprising:

a suction head removably coupled to the suction pipe, the suction head including a suction inlet through which a tool bit of the power tool is extendable, and

a nozzle interchangeably coupled to the suction pipe with the suction head, the nozzle being usable with the dust collector without the power tool when the second switch is in the third switching position.

29. The power tool assembly of claim 27, further comprising an extension stop adjustably coupled along the length of the suction pipe to limit an extent to which the suction pipe telescopes from the housing, wherein the first switch is actuated by the extension stop.

30. The power tool assembly of claim 29, wherein the first switch is a normally closed microswitch, and wherein the microswitch is actuated to an open state in response to contact with the extension stop.

31. The power tool assembly of claim 30, wherein the microswitch is actuated to a closed state in response to a loss of contact with the extension stop.

32. The power tool assembly of claim 26, wherein the suction pipe is telescopically movable relative to the housing from an extended position to a retracted position in response to being depressed against a workpiece, and wherein the switch electrically connects the motor with the second battery in response to the switch detecting movement of the suction pipe from the extended position to the retracted position.

33. The power tool assembly of claim 32, further comprising a controller electrically connected with the switch and the second battery.

34. The power tool assembly of claim 33, wherein the controller maintains activation of the motor for a period of time in response to the switch detecting movement of the suction pipe from the retracted position to the extended position for clearing dust from the suction pipe.

35. The power tool assembly of claim 34, wherein the controller initiates a timer upon detecting movement of the suction pipe from the extended position to the retracted position, and wherein the controller maintains activation of the motor for clearing dust from the suction pipe only after a predetermined amount of time lapses with the suction pipe maintained in the retracted position.

36. The power tool assembly of claim 1, wherein the filter is removably received in the dust container.

37. The power tool assembly of claim 36, wherein the dust container and the filter are removable from the housing as a unit.

38. The power tool assembly of claim 36, wherein the filter includes a pleated element and a rim surrounding the pleated element, and wherein the rim is trapped between the dust container and the housing when the dust container is attached to the housing.

39. The power tool assembly of claim 38, wherein the pleated element extends into an interior of the dust container.

40. The power tool assembly of claim 39, wherein the filter is oriented relative to the dust container in an inclined or an oblique manner relative to a longitudinal axis of the suction pipe.

41. The power tool assembly of claim 38, wherein the rim is accessible for grasping to facilitate removal of the filter from the dust container when the dust container is detached from the housing.

42. The power tool assembly of claim 1, wherein the dust collector further includes a detector coupled to the housing and biased toward a first position in which a portion of the detector protrudes from the housing to prevent the dust container from being coupled to the housing in absence of the filter, the protruding portion of the detector being retractable into the housing in response to the detector being moved to a second position by the filter when the filter is present, thereby permitting the dust container to be coupled to the housing.

43. The power tool assembly of claim 42, wherein the detector is pivotably supported by the housing at a location upstream of the suction fan.

44. The power tool assembly of claim 42, wherein the detector includes a shaft defining a rotational axis about which the detector is pivotable and an arm extending radially from the shaft, and wherein the arm is engaged with the filter when the filter is present.

45. The power tool assembly of claim 44, wherein the protruding portion is configured as a finger positioned adjacent the arm.

46. The power tool assembly of claim 45, wherein the housing includes an aperture aligned with the finger, and wherein the dust container includes an alignment tab that is receivable in the aperture when the pre-assembled filter and dust container are attached to the housing.

47. The power tool assembly of claim 46, wherein the finger is pivoted to a position in which it at least partially protrudes into the aperture in absence of the filter, thereby interfering with the alignment tab to prevent the dust container from being attached to the housing.

48. The power tool assembly of claim 1, wherein the power tool is a first power tool, and wherein the dust collector further includes

a handle assembly including

a first handle having a head portion with a first size for receiving a neck of a first power tool for supporting the first power tool in a side-by-side relationship with the dust collector, and

a second handle having a head portion with a second size for receiving a neck of a second power tool for supporting the second power tool in a side-by-side relationship with the dust collector, the necks of the first and second power tools being of a different size.

49. The power tool assembly of claim 48, wherein the handle assembly further includes

a first adapter attached to the first handle, and

a second adapter attached to the second handle, wherein the first and second adapters interchangeably attach the respective first and second handles to the housing.

50. The power tool assembly of claim 49, wherein the handle assembly further includes a third handle having a head portion with a third size for receiving a neck of a third power tool for supporting the third power tool in a side-by-side relationship with the dust collector, and wherein the necks of the first, second, and third power tools are of a different size.

51. The power tool assembly of claim 50, wherein the handle assembly further includes a third adapter attached to the third handle, and wherein the third adapter interchangeably attaches the third handle to the housing.

52. The power tool assembly of claim 49, wherein the housing includes a first side and an opposite second side, and wherein the first and second adapters are each interchangeably connectable to the first and second sides of the housing to thereby support one of the first and second power tools adjacent a chosen one of the first and second sides of the housing.

53. The power tool assembly of claim 49, wherein each of the first and second handles includes a cylindrical band and a rotatable grip for constricting and expanding the band, and wherein the necks of the first and second power tools are clamped by the respective bands.

54. The power tool assembly of claim 53, wherein the respective cylindrical bands of the first and second handles include different circumferential lengths.

55. The power tool assembly of claim 1, wherein the dust collector includes

a depth stop movable along the length of the suction pipe and selectively fixed to the suction pipe to limit the extent to which the suction pipe may telescope relative to the housing, and

a ruler coupled for movement with the depth stop.

56. The power tool assembly of claim 55, wherein the ruler includes a plurality of reference markings, and wherein a first of the markings is alignable with a reference datum on the housing to limit an extent to which the suction pipe telescopes into the housing to a first depth.

57. The power tool assembly of claim 56, wherein a second of the markings is alignable with the reference datum on the housing to limit the extent to which the suction pipe telescopes into the housing to a second depth.

58. The power tool assembly of claim 55, wherein the depth stop is engageable with the housing to limit the extent to which the suction pipe may telescope relative to the housing.

59. The power tool assembly of claim 1, further comprising a handle for directly supporting the power tool and the dust collector in a side-by-side relationship.