GB2276344A - Power tool - Google Patents

Power tool

Info

Publication number
GB2276344A
GB2276344A GB9411730A GB9411730A GB2276344A GB 2276344 A GB2276344 A GB 2276344A GB 9411730 A GB9411730 A GB 9411730A GB 9411730 A GB9411730 A GB 9411730A GB 2276344 A GB2276344 A GB 2276344A
Authority
GB
United Kingdom
Prior art keywords
shaft
power tool
cam member
partake
cam
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.)
Granted
Application number
GB9411730A
Other versions
GB9411730D0 (en
GB2276344B (en
Inventor
Hugh Edward Fisher
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.)
Individual
Original Assignee
Individual
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
Priority claimed from PCT/GB1992/002352 external-priority patent/WO1993011910A1/en
Application filed by Individual filed Critical Individual
Priority to GB9411730A priority Critical patent/GB2276344B/en
Publication of GB9411730D0 publication Critical patent/GB9411730D0/en
Publication of GB2276344A publication Critical patent/GB2276344A/en
Application granted granted Critical
Publication of GB2276344B publication Critical patent/GB2276344B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D11/00—Portable percussive tools with electromotor or other motor drive
    • B25D11/06—Means for driving the impulse member
    • B25D11/10—Means for driving the impulse member comprising a cam mechanism
    • B25D11/102—Means for driving the impulse member comprising a cam mechanism the rotating axis of the cam member being coaxial with the axis of the tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D16/00—Portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B25D16/006—Mode changers; Mechanisms connected thereto

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Harvester Elements (AREA)

Abstract

The invention relates to portable power tool means intended to form part of a power tool or a conversion unit adapted to be fitted to the shaft of a power tool. The tool means includes a rotary cam member (6, 8) having an internal sinusoidal cam track (12) in which cam followers (26) of an output shaft (2) are received. When the cam member (6, 8) rotates, the shaft (2) is caused to partake of a lengthwise reciprocating movement suitable for application to a scraper bit or other tool kit such as a chisel. In an example of the invention, the shaft (86) passes through a fixed bearing ring (88), a slidable sleeve (96) being provided to control engagement of the shaft (86) via a key member (104) with portions of the ring (88) or the cam member (76), so as to enable the shaft (86) to partake of lengthwise movement or to be convertible to rotational movement, as selected bay the operator. <IMAGE>
GB9411730A 1992-12-18 1994-06-10 Power tool Expired - Lifetime GB2276344B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9411730A GB2276344B (en) 1992-12-18 1994-06-10 Power tool

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PCT/GB1992/002352 WO1993011910A1 (en) 1991-12-19 1992-12-18 Power tool
GB9411730A GB2276344B (en) 1992-12-18 1994-06-10 Power tool

Publications (3)

Publication Number Publication Date
GB9411730D0 GB9411730D0 (en) 1994-08-03
GB2276344A true GB2276344A (en) 1994-09-28
GB2276344B GB2276344B (en) 1995-02-01

Family

ID=10756581

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9411730A Expired - Lifetime GB2276344B (en) 1992-12-18 1994-06-10 Power tool

Country Status (1)

Country Link
GB (1) GB2276344B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009071908A1 (en) * 2007-12-04 2009-06-11 Impact Power tool

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB186142A (en) * 1921-06-20 1922-09-20 Henry George Kessler Improvements in and relating to power operated portable hammers, drills and the like
CH113785A (en) * 1926-04-24 1926-02-16 August Mueller Device for applying blows.
FR775120A (en) * 1934-03-17 1934-12-20 Schmid & Wezel Mechanically operated scraping tool
GB612866A (en) * 1946-06-03 1948-11-18 Wodack Electric Tool Corp Improvements in or relating to percussive tools
US2474056A (en) * 1945-03-09 1949-06-21 Leo M Larsen Reciprocating tool
DE1190860B (en) * 1955-06-27 1965-04-08 Ansbacher Maschinen Und Werkze Hammer drill
GB2219958A (en) * 1988-06-23 1989-12-28 Hugh Edward Fisher Power tool

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB186142A (en) * 1921-06-20 1922-09-20 Henry George Kessler Improvements in and relating to power operated portable hammers, drills and the like
CH113785A (en) * 1926-04-24 1926-02-16 August Mueller Device for applying blows.
FR775120A (en) * 1934-03-17 1934-12-20 Schmid & Wezel Mechanically operated scraping tool
US2474056A (en) * 1945-03-09 1949-06-21 Leo M Larsen Reciprocating tool
GB612866A (en) * 1946-06-03 1948-11-18 Wodack Electric Tool Corp Improvements in or relating to percussive tools
DE1190860B (en) * 1955-06-27 1965-04-08 Ansbacher Maschinen Und Werkze Hammer drill
GB2219958A (en) * 1988-06-23 1989-12-28 Hugh Edward Fisher Power tool

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009071908A1 (en) * 2007-12-04 2009-06-11 Impact Power tool

Also Published As

Publication number Publication date
GB9411730D0 (en) 1994-08-03
GB2276344B (en) 1995-02-01

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Expiry date: 20121217