US3780246A - Hand-operated tool with switch actuator having three-position lock-off assembly - Google Patents

Hand-operated tool with switch actuator having three-position lock-off assembly Download PDF

Info

Publication number
US3780246A
US3780246A US00282768A US3780246DA US3780246A US 3780246 A US3780246 A US 3780246A US 00282768 A US00282768 A US 00282768A US 3780246D A US3780246D A US 3780246DA US 3780246 A US3780246 A US 3780246A
Authority
US
United States
Prior art keywords
tool
switch
operator
switch operator
handle
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.)
Expired - Lifetime
Application number
US00282768A
Other languages
English (en)
Inventor
J Beckering
E Weber
R Secoura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Black and Decker Corp
Original Assignee
Black and Decker Manufacturing Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Black and Decker Manufacturing Co filed Critical Black and Decker Manufacturing Co
Application granted granted Critical
Publication of US3780246A publication Critical patent/US3780246A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H9/06—Casing of switch constituted by a handle serving a purpose other than the actuation of the switch, e.g. by the handle of a vacuum cleaner
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/20—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch wherein an auxiliary movement thereof, or of an attachment thereto, is necessary before the main movement is possible or effective, e.g. for unlatching, for coupling

Definitions

  • ABSTRACT A portable, hand-operated, electric power tool such as 221 Filed: Aug. 22, 1972 21 Appl. No.: 282,768
  • a switch actuator assembly includes a trigger on a handle for turning the tool on and] off.
  • the trigger is normally biased off and can be manually operated to the on position when the operator has his hand on the tool handle.
  • Means is provided to automaticall Rm 9/ 12 W2 W9 20.] 9H 1 7 5 50 HU 016 To m2 m m "mm 15 C WM sl e Umm mum 555 [.ll
  • the locking means is further constructed for permanent locking when the tool is stored between uses.
  • the present invention relates to hand-operated, power tools, in which it is desirable to provide for easy tool actuation and control, while at the same time eliminating the likelihood that the tool will be inadvertently or accidentally turned on" when left unattended during use or when stored between uses.
  • This invention is directed to an improved switch actuator assembly for a hand-operated, power tool, wherein the tool may be turned on and off easily and readily, while the user keeps his hand generally in place thereon, but wherein the actuator (and tool) are automatically locked temporarily off" when the users hand is removed.
  • this invention includes a switch actuator assembly for a hand-operated power tool, wherein the actuator (and tool) are automatically locked temporarily of when a user removes his hand therefrom and requires an intentional, positive release to turn the tool on," and wherein additional permanent locking means is provided for when the tool is stored between uses which, when operated prevents release of the first mentioned locking arrangement.
  • a power-operated grass shear in which the present invention finds use, is indicated generally at 10 and comprises a clam-shell housing 12 including complimentary halves l6 and 18 secured together by screws 19.
  • the housing l2 encloses a motor 30 and a transmission (not shown) which, when energized, pow ers the tool output, here a blade assembly 14 including toothed, fixed and oscillating blades l7, 15.
  • the motror 30 is connected to a suitable power source, such as battery means (not shown) located within the housing 12, or conventional house current by way of a line cord 31, and is controlled by a switch 36 connected to the motor and battery means or current source by leads 32, 34.
  • a suitable power source such as battery means (not shown) located within the housing 12, or conventional house current by way of a line cord 31, and is controlled by a switch 36 connected to the motor and battery means or current source by leads 32, 34.
  • the housing 12 is formed with an overhead handle 20 adjacent which is mounted a paddle trigger 28 forming part of a novel switch actuator assembly for operating switch 36 to turn the tool on and off.
  • the switch 36 includes a body 37 trapped in place between the housing halves l6, l8 and is provided with terminals 39, 41 to which the leads 32, 34 are connected.
  • a slider 38 on the body 37 is normally biased in a downward direction, as seen in FIGS. 2-5, by a spring 43 to open the switch 36, and is movable upwardly to close the switch 36 and energize the tool 10.
  • the paddle trigger 26 is pivoted on the housing 12 by means of trunnions 56 formed integrally with the paddle trigger 28 and journaled in tubular bearings 58 formed integrallywith the housing halves l6, l8 and has a paddle or finger engaging portion 26 extending through cut-aways 46 in the housing halves 16, 18.
  • the paddle trigger 28 has a forward extending finger defining a ledge 68 positioned to engage and move the switch slider 38 upwardly when the trigger 28 is pivoted in a counterclockwise direction.
  • Spring means here a leaf spring 60 formed integrally with the rear end of trigger 28, engages a transverse rib 62 in the housing half 18 and normally biases the trigger 28 in a clockwise direction holding it in theposition shown in FIGS. 2 and 4.
  • the tool be auto matically locked temporarily off when the operator releases his hand therefrom, such as when he sets the tool down, so that a positive act is necessary beforethe tool can be turned back on.
  • the locking mechanism it is important that the locking mechanism not engage during normal operation of the tool so as not to require frequent release.
  • the user should be able to turn the tool on and off" without the locking mechanism coming into play. This is particularly advantageous in the case of cordless electric tools, since if it were necessary to run the tool continuously to prevent the locking mechanism from re-engaging, the battery means would be drained too quickly.
  • a lock button 44 which includes a body 82 having a pair of laterally extending trunnions 80v trapped in a pocket 70 formed by abutting ledges 71 integral with the housing halves l6, 18.
  • the button body 82 extends through aligned apertures 72, 74 formed in ledges 71 sized to allow turning and limited rocking or pivotal movement of button 44 for purposes to'be described.
  • the button 44 has a depending blade portion 84 disposed adjacent the finger 64 of the paddle trigger 28, and an accessible thumb engaged portion 76 located in a recess 40 in the top of the housing 12 above pocket 70.
  • the button 44 is adapted to be turned about its longitudinal axis, and to this end, the pocket 70 in the housing 12 is sized and shaped to receive the trunnions 80 both longitudinally as well as transversely of the housing 12.
  • the trunnions 80 When the trunnions 80 are disposed transversely of the housing 12, as shown in FIGS. 2 and 3, they act as pivot pins for the button 44 so that it can be rocked or pivoted, as allowed by the apertures 72, 74, from the position shown in full lines in FIG. 2 to the position shown in FIGS. 2 and in broken lines in FIG. 2, through rearward pressure by the thumb against the exterior portion 76 thereof.
  • button 44 is turned to the position shown in FIG. 4, the trunnions 80 are fitted snuggly within the pocket 70 so that no pivotal action of the button 44 can occur.
  • the finger 64 of the paddle trigger 28 is provided with a generally rectangular shaped aperture 66 therethrough (FIG.
  • the blade portion 84 of the button 44 is also generally rectangular in cross section and, when aligned with the aperture 66, allows the paddle trigger 28 to pivot in a counterclockwise direction about its trunnions 56 sufficiently so as to cause the ledge 68 to engage and move the switch slider 38 upwardly and thereby close the switch 36 to turn the tool on.
  • the blade 84 of button 44 is not aligned with the rectangular opening 66, upward movement of the paddle trigger 28 is blocked and switch 36 cannot be closed.
  • a tension spring 90 has one tang 92 wrapped around a post 94 formed on the housing half 18, and its other tang 88 secured to the button 44 at a groove 83 located below the trunnions 80.
  • the spring 90 holds the button 44 in the position shown so that the blade portion 84, overlays an abutment or rib 87 (FIG. 5) rearwardly of the aperture 66 in the paddle trigger finger 64.
  • the button 44 temporarily prevents the paddle trigger 28 from being raised and from closing the switch 36.
  • the button 44 can be manually rocked or pivoted about the trunnions 80, in a counterclockwise direction, to the position shown in broken lines in FIG.
  • the force of the spring 60 will move the paddle trigger 28 fully back to the position shown in FIG. 2, whereupon the blade portion 84 of button 44 is withdrawn from the aperture 66 and the button 44 is pulled back to the position shown in full lines in FIG. 2 by the spring 90.
  • the tool 10 is left unattended during use, an uninformed or youthful observer cannot pick the tool up and accidentally turn it on. He must first release the locking button 44 by pulling rearwardly on the head 76, and, while so holding'the button 44, pivot the paddle trigger 28 upwardly to turn the tool on.
  • the tool 10 is rendered safe and tamper proof in that it requires two positive, distinct and syncronized actions to turn the tool on once it is set down by the user.
  • the locking button 44 When use of the tool has been completed, and it is desired to store the tool, the locking button 44 is turned to the position shown in FIG. 4.
  • the blade portion 84 of the button 44 is disposed transversely to the aperture 66.
  • the paddle trigger 28 In this position of the parts, also represented in FIG. 5, the paddle trigger 28 is permanently" locked off and cannot be manipulated into the on position.
  • the head 76 of the button is provided with a screwdriver type slot 78 adaptedto receive the edge of a coin, a screwdriver, or other tool or device.
  • switch actuation means including a trigger on said handle and manually movable from a first position where said switch means is open and said tool off, to a second position to close said switch means and turn said tool on, means normally biasing said switch actuator means toward said first position, locking means accessible from said handle and movable from a first position cooperatively engageable with said trigger to pre vent movement of said trigger from its first to its second position, said locking means being normally biased toward its first position and being manually movable toward a second position where said trigger is then manually movable to its second position, said trigger and said locking means being cooperatively engageable when each is in its second position whereby said locking means can be released and will not move back to its first position until said trigger is allowed to move to
  • switch actuation means including a trigger on said handle and manually movable from a first postion where said switch means is open and said tool off, to a second postion to close said switch means and turn said tool on, means normally biasing said switch actuator means toward said first position, locking means accessible from said handle and movable: from a first position cooperatively engageable with said trigger to prevent movement of said trigger from its first to its second position, said locking means being normally biased toward its first position and being manually movable toward a second position out of said first mentioned cooperatively engageable relation with said trigger where said trigger is then manually movable to its second position, said trigger and said locking means being cooperatively engageable in a second relation when each is in its second position whereby said switch actuation means including a trigger on said handle and manually movable from a first postion where said switch means is open and said tool off, to a second postion to close said switch means and turn said tool on, means normally biasing said switch actuator means toward said first position, locking means accessible from said handle and movable:
  • a portable, hand-held and manipulated power tool comprising a housing having an electric motor therein,
  • ger may be moved from its third to its second position
  • said housing including a handle, switch means including a switch operator on said handle and normally engaged by an operator's hand when the latter is in position on said handle, said switch operator being movable from a first position where said motor is off and said tool is de-energized, to a second position where said motor is on and said tool is energized, means normally biasing, said switch operator toward said first position, manually releasable means locking said switch operator in said first position, said switch operator being movable through a third position intertool means driven by said motor and supported upon said housing, said housing including a handle, switch means including a switch operator on said handle and normally engaged by arr-operator's hand 'when the latter is in position on said handle, said switch operator having an aperture therein and being movable from a first position where said motor is off and said tool is deenergized, to a second position where said motor is on and said tool is energized, means normally biasing said switch operator toward said first position, manually relea
  • a portable, hand-held and manipulated power tool comprising a housing having an electric motor therein, tool means driven by said motor and supported upon said housing, said housing including a handle, switch means including a switch operator on said handle and normally engaged by an operators hand when the latter is in position on said handle, said switch operator having an aperture therein and being movable from a first position where said motor is off and said tool is deenergized, to a second position where said motor is on and said tool is energized, means normally biasing said switch operator toward said first position, manually releasable means normally positioned in confronting, abutting relationship with and locking said switch operator in said first position, said locking means being movable to a switch operator releasing position where it aligns with and includes a portion receivable in said aperture when said switch operator is moved to its second position,- whereby to allow movement of said switch operator to its second position, said switch operator being movable through a third position intermediate said first and second position where said motor is off and said tool is deenergized, said locking means portion
  • a portable, hand-held and manipulated power tool comprising a housing having an elecric motor therein, tool means driven by said motor and supported upon said housing, said housing including a handle, switch means including a switch operator on said handle and normally engaged by an operators hand when the latter is in position on said handle, said switch operator having an aperture therein and being movable from a first position where said motor is off and said tool is deenergized, to a second position where said motor is on and said tool is energized, means normally biasing said switch operator toward said first position, manually releasable means normally positoned in confronting, abutting relationship with'and locking said switch operator in said first position, said locking means being movable to a switch operator releasing position where it aligns with and includes a portion receivable in said aperture when said switch operator is moved to its second position, whereby to allow movement of said switch operator to its second position, said switch operator being movable through a third position intermediate said first and second position where said motor is off and said tool is deenergized
  • a portable, hand-held and manipulated power tool comprising a housing having an electric motor therein, tool means driven by said motor and supported upon said housing, said housing including a handle, switch means including a switch operator on said handle and normally engaged by an operators hand when the latter is in position on said handle, said switch operator having an aperture therein and being movable from a first position where said motor is off and said tool is deenergized, to a second position where said motor is on and said tool is energized, means normally biasing said switch operator toward said'first position, manually releasable means normally positioned in confronting, abutting relationship with and locking said switch operator in said first position, said locking means being movable to a switch operator releasing position where it aligns with and includes a portion receivable in said aperture when said switch operator is moved to its second position, whereby to allow movement of said switch operator to its second position, said switch operator being movable through a third position intermediate said first and second position where said motor is off and said tool is de-energized, said locking means

Landscapes

  • Harvester Elements (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Slide Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Portable Nailing Machines And Staplers (AREA)
US00282768A 1972-08-22 1972-08-22 Hand-operated tool with switch actuator having three-position lock-off assembly Expired - Lifetime US3780246A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US28276872A 1972-08-22 1972-08-22

Publications (1)

Publication Number Publication Date
US3780246A true US3780246A (en) 1973-12-18

Family

ID=23083044

Family Applications (1)

Application Number Title Priority Date Filing Date
US00282768A Expired - Lifetime US3780246A (en) 1972-08-22 1972-08-22 Hand-operated tool with switch actuator having three-position lock-off assembly

Country Status (9)

Country Link
US (1) US3780246A (hu)
JP (2) JPS4947134A (hu)
AU (1) AU476360B2 (hu)
CA (1) CA981317A (hu)
DK (1) DK133718B (hu)
FR (1) FR2196880B1 (hu)
GB (1) GB1403134A (hu)
IT (1) IT992651B (hu)
SE (1) SE387196B (hu)

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3854020A (en) * 1973-06-29 1974-12-10 Black & Decker Mfg Co Trigger mechanism for hand-operated power device including stationary locking device which provides lock-off and lock-on operation
US3873796A (en) * 1973-07-06 1975-03-25 Black & Decker Mfg Co Trigger mechanism for hand-operated power device including independently operable locking devices providing automatic lock off and manual lock-on operation
US4122320A (en) * 1976-08-16 1978-10-24 Disston, Inc. Hand-operated double-acting trigger switch
US4244406A (en) * 1978-11-07 1981-01-13 The Black & Decker Manufacturing Co. Safety switch for portable power-operated device
US5520634A (en) * 1993-04-23 1996-05-28 Ethicon, Inc. Mechanical morcellator
US5595532A (en) * 1995-10-20 1997-01-21 Waxing Corporation Of America, Inc. Electrically-powered polisher
US5642008A (en) * 1995-10-20 1997-06-24 Waxing Corporation Of America, Inc. Power tool motor assembly
US5678272A (en) * 1995-10-20 1997-10-21 Waxing Corporation Of America, Inc. Power tool having a quick release system for attaching a working element
US6057518A (en) * 1998-08-14 2000-05-02 Black & Decker, Inc. Lockout mechanism for power tool
US6091035A (en) * 1998-08-14 2000-07-18 Black & Decker, Inc. Lockout mechanism for power tool
US6251121B1 (en) 1996-12-02 2001-06-26 Angiotrax, Inc. Apparatus and methods for intraoperatively performing surgery
US6290587B1 (en) 1995-10-20 2001-09-18 Wilton Tool Company, Llc Electrically-powered polisher
US6528749B2 (en) * 2000-08-23 2003-03-04 Twinbird Corporation Switch attachment structure
US6610946B2 (en) * 2001-04-20 2003-08-26 Black & Decker Inc. Actuation mechanism for a power tool
US6717080B1 (en) * 2003-05-22 2004-04-06 Defond Components Limited Power tool trigger assembly
US20050205406A1 (en) * 2004-03-22 2005-09-22 Defond Components Limited Power tool trigger assembly
US20080011592A1 (en) * 2006-06-29 2008-01-17 Hilti Aktiengesellschaft Main handle with a safety lock
US20090119933A1 (en) * 2007-11-08 2009-05-14 Echo, Inc. Apparatus having a tool on an elongate pole and method of operating the apparatus
US7686799B2 (en) 2000-07-13 2010-03-30 Abbott Cardiovascular Systems Inc. Deployment system for myocardial cellular material
US8008812B2 (en) 2006-07-14 2011-08-30 Aurora Office Equipment Co., Ltd. Paper shredder control system responsive to touch-sensitive element
US8018099B2 (en) 2006-07-14 2011-09-13 Aurora Office Equipment Co., Ltd. Touch-sensitive paper shredder control system
USRE42959E1 (en) 1996-12-02 2011-11-22 Abbott Cardiovascular Systems Inc. Apparatus and methods for stimulating revascularization and/or tissue growth
US8087599B2 (en) 2009-05-07 2012-01-03 Aurora Office Equipment Co., Ltd. Anti-paper jam protection device for shredders
USRE43300E1 (en) 1996-12-02 2012-04-03 Abbott Cardiovascular Systems Inc. Apparatus having stabilization members for percutaneously performing surgery and methods of use
US8146845B2 (en) 2008-08-06 2012-04-03 Aurora Office Equipment Co., Ltd. Shanghai Automatic shredder without choosing the number of paper to be shredded
US8201766B2 (en) 2008-08-19 2012-06-19 Aurora Office Equipment Co., Ltd. Pins or staples removable structure of automatic shredders
US8308708B2 (en) 2003-07-15 2012-11-13 Abbott Cardiovascular Systems Inc. Deployment system for myocardial cellular material
US8708260B2 (en) 2011-08-08 2014-04-29 Aurora Office Equipment Co., Ltd. Depowered standby paper shredder and method
US8723468B2 (en) 2011-04-28 2014-05-13 Aurora Office Equipment Co., Ltd. Cooled motor
US20150170848A1 (en) * 2013-12-17 2015-06-18 Robert Bosch Tool Corporation Portable power tool with trigger switch, trigger release and lock-on mechanism combination
USRE45638E1 (en) 1996-12-02 2015-08-04 Abbott Cardiovascular Systems Inc. Apparatus for percutaneously performing myocardial revascularization having means for sensing tissue parameters and method of use
US20220093353A1 (en) * 2020-09-23 2022-03-24 Globe (jiangsu) Co., Ltd. Switch assembly and power tool

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60155136U (ja) * 1984-03-24 1985-10-16 オンキヨー株式会社 ハンドマイクのプレスト−クスイツチ構造

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1929662A (en) * 1930-08-16 1933-10-10 Wappat Inc Motor driven tool switch
US3194084A (en) * 1963-01-21 1965-07-13 Black & Decker Mfg Co Trigger locking means for hand-portable power-operated device
US3626118A (en) * 1966-11-14 1971-12-07 Harold R Botefuhr Radial arm saw with a depressible key for unlocking a switch-actuating trigger
US3662136A (en) * 1971-05-20 1972-05-09 Leviton Manufacturing Co Trigger mechanism for power tool

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1929662A (en) * 1930-08-16 1933-10-10 Wappat Inc Motor driven tool switch
US3194084A (en) * 1963-01-21 1965-07-13 Black & Decker Mfg Co Trigger locking means for hand-portable power-operated device
US3626118A (en) * 1966-11-14 1971-12-07 Harold R Botefuhr Radial arm saw with a depressible key for unlocking a switch-actuating trigger
US3662136A (en) * 1971-05-20 1972-05-09 Leviton Manufacturing Co Trigger mechanism for power tool

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
IBM Technical Disclosure, Vol. 8, No. 5, p. 737, Oct., 1965; Latch Operated Switch by J. Greenfield. *

Cited By (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3854020A (en) * 1973-06-29 1974-12-10 Black & Decker Mfg Co Trigger mechanism for hand-operated power device including stationary locking device which provides lock-off and lock-on operation
US3873796A (en) * 1973-07-06 1975-03-25 Black & Decker Mfg Co Trigger mechanism for hand-operated power device including independently operable locking devices providing automatic lock off and manual lock-on operation
US4122320A (en) * 1976-08-16 1978-10-24 Disston, Inc. Hand-operated double-acting trigger switch
US4244406A (en) * 1978-11-07 1981-01-13 The Black & Decker Manufacturing Co. Safety switch for portable power-operated device
US5520634A (en) * 1993-04-23 1996-05-28 Ethicon, Inc. Mechanical morcellator
US6168507B1 (en) 1995-10-20 2001-01-02 Waxing Corporation Of America, Inc. Electrically-powered polisher
US6592441B2 (en) 1995-10-20 2003-07-15 Whm Tool Group, Inc. Electrically-powered polisher
US5678272A (en) * 1995-10-20 1997-10-21 Waxing Corporation Of America, Inc. Power tool having a quick release system for attaching a working element
US5794300A (en) * 1995-10-20 1998-08-18 Waxing Corporation Of America, Inc. Power tool
US5830047A (en) * 1995-10-20 1998-11-03 Waxing Corporation Of America, Inc. Electrically-powered polisher
US5595532A (en) * 1995-10-20 1997-01-21 Waxing Corporation Of America, Inc. Electrically-powered polisher
US6290587B1 (en) 1995-10-20 2001-09-18 Wilton Tool Company, Llc Electrically-powered polisher
US5642008A (en) * 1995-10-20 1997-06-24 Waxing Corporation Of America, Inc. Power tool motor assembly
USRE42959E1 (en) 1996-12-02 2011-11-22 Abbott Cardiovascular Systems Inc. Apparatus and methods for stimulating revascularization and/or tissue growth
USRE43300E1 (en) 1996-12-02 2012-04-03 Abbott Cardiovascular Systems Inc. Apparatus having stabilization members for percutaneously performing surgery and methods of use
USRE45638E1 (en) 1996-12-02 2015-08-04 Abbott Cardiovascular Systems Inc. Apparatus for percutaneously performing myocardial revascularization having means for sensing tissue parameters and method of use
US6251121B1 (en) 1996-12-02 2001-06-26 Angiotrax, Inc. Apparatus and methods for intraoperatively performing surgery
US6340802B1 (en) 1998-08-14 2002-01-22 Black & Decker, Inc. Lockout mechanism for power tool
US6538218B2 (en) 1998-08-14 2003-03-25 Black & Decker, Inc. Lockout mechanism for power tool
US6512188B2 (en) 1998-08-14 2003-01-28 Black & Decker, Inc. Lockout mechanism for power tool
US20030136652A1 (en) * 1998-08-14 2003-07-24 Popup Industries, Inc. Lockout mechanism for power tool
US6288350B1 (en) 1998-08-14 2001-09-11 Black & Decker, Inc. Lockout mechanism for power tool
US6861598B2 (en) 1998-08-14 2005-03-01 Black & Decker Inc. Lockout mechanism for power tool
US6091035A (en) * 1998-08-14 2000-07-18 Black & Decker, Inc. Lockout mechanism for power tool
US6057518A (en) * 1998-08-14 2000-05-02 Black & Decker, Inc. Lockout mechanism for power tool
US7686799B2 (en) 2000-07-13 2010-03-30 Abbott Cardiovascular Systems Inc. Deployment system for myocardial cellular material
US6528749B2 (en) * 2000-08-23 2003-03-04 Twinbird Corporation Switch attachment structure
US6610946B2 (en) * 2001-04-20 2003-08-26 Black & Decker Inc. Actuation mechanism for a power tool
US6717080B1 (en) * 2003-05-22 2004-04-06 Defond Components Limited Power tool trigger assembly
US8308708B2 (en) 2003-07-15 2012-11-13 Abbott Cardiovascular Systems Inc. Deployment system for myocardial cellular material
US20050205406A1 (en) * 2004-03-22 2005-09-22 Defond Components Limited Power tool trigger assembly
US6989503B2 (en) * 2004-03-22 2006-01-24 Defond Components Limited Power tool trigger assembly
US20080011592A1 (en) * 2006-06-29 2008-01-17 Hilti Aktiengesellschaft Main handle with a safety lock
US8963379B2 (en) 2006-07-14 2015-02-24 Aurora Office Equipment Co., Ltd. Shanghai Paper shredder control system responsive to touch-sensitive element
US8018099B2 (en) 2006-07-14 2011-09-13 Aurora Office Equipment Co., Ltd. Touch-sensitive paper shredder control system
US8008812B2 (en) 2006-07-14 2011-08-30 Aurora Office Equipment Co., Ltd. Paper shredder control system responsive to touch-sensitive element
US20090119933A1 (en) * 2007-11-08 2009-05-14 Echo, Inc. Apparatus having a tool on an elongate pole and method of operating the apparatus
US9492941B2 (en) * 2007-11-08 2016-11-15 Echo, Incorporated Apparatus having a tool on an elongate pole
US8146845B2 (en) 2008-08-06 2012-04-03 Aurora Office Equipment Co., Ltd. Shanghai Automatic shredder without choosing the number of paper to be shredded
US8201766B2 (en) 2008-08-19 2012-06-19 Aurora Office Equipment Co., Ltd. Pins or staples removable structure of automatic shredders
US8087599B2 (en) 2009-05-07 2012-01-03 Aurora Office Equipment Co., Ltd. Anti-paper jam protection device for shredders
US8723468B2 (en) 2011-04-28 2014-05-13 Aurora Office Equipment Co., Ltd. Cooled motor
US8708260B2 (en) 2011-08-08 2014-04-29 Aurora Office Equipment Co., Ltd. Depowered standby paper shredder and method
US20150170848A1 (en) * 2013-12-17 2015-06-18 Robert Bosch Tool Corporation Portable power tool with trigger switch, trigger release and lock-on mechanism combination
US10014128B2 (en) * 2013-12-17 2018-07-03 Robert Bosch Tool Corporation Portable power tool with trigger switch, trigger release and lock-on mechanism combination
US20220093353A1 (en) * 2020-09-23 2022-03-24 Globe (jiangsu) Co., Ltd. Switch assembly and power tool
US11990294B2 (en) * 2020-09-23 2024-05-21 Globe (jiangsu) Co., Ltd. Switch assembly and power tool

Also Published As

Publication number Publication date
DK133718B (da) 1976-07-05
JPS553894U (hu) 1980-01-11
AU5523673A (en) 1974-11-07
JPS5732504Y2 (hu) 1982-07-16
CA981317A (en) 1976-01-06
SE387196B (sv) 1976-08-30
FR2196880A1 (hu) 1974-03-22
FR2196880B1 (hu) 1977-02-25
DK133718C (hu) 1976-11-22
JPS4947134A (hu) 1974-05-07
AU476360B2 (en) 1976-09-16
GB1403134A (en) 1975-08-13
IT992651B (it) 1975-09-30

Similar Documents

Publication Publication Date Title
US3780246A (en) Hand-operated tool with switch actuator having three-position lock-off assembly
US3873796A (en) Trigger mechanism for hand-operated power device including independently operable locking devices providing automatic lock off and manual lock-on operation
US3847233A (en) Trigger mechanism for hand-operated power device providing automatic lock-off and manual lock-on operation
US3613748A (en) Safety guard arrangement for circular saw
US4122320A (en) Hand-operated double-acting trigger switch
US4280026A (en) Actuator mechanism for a portable, hand-held tool
US3854020A (en) Trigger mechanism for hand-operated power device including stationary locking device which provides lock-off and lock-on operation
US4044532A (en) Two-motion switch for cordless lawnmower
US3603065A (en) Cam safe switch actuator
JPS62101282A (ja) 散髪機
US4740020A (en) Multiple-step release lock for a storage container
US2348107A (en) Hand control unit
US4359615A (en) Switch and means to prevent unauthorized operation thereof
US3308535A (en) Electric slicing knife
US3339281A (en) Shears with locking means
US20070028942A1 (en) Hair decoration tool
JP2788271B2 (ja) 電動式の鋏
GB1560424A (en) Electrical cutting appliances
CN110125882B (zh) 用于电驱动式园林工具的开关装置
US4922069A (en) Electrical control switch mechanism
US4109132A (en) Automatic welding mask shutter lens system
US4023001A (en) Locking member for hand-held trigger actuated switch
US3711949A (en) Cordless electric garden trimmer with safety lock means
GB606631A (en) Improvements in knives and like implements
GB1450368A (en) Cutting implement