Title:
【発明の名称】調節可能スパナ
Document Type and Number:
Japanese Patent JPH07507500
Kind Code:
A
Abstract:
PCT No. PCT/AU93/00262 Sec. 371 Date Jan. 25, 1995 Sec. 102(e) Date Jan. 25, 1995 PCT Filed Jun. 3, 1993 PCT Pub. No. WO93/25350 PCT Pub. Date Dec. 23, 1993This specification discloses an adjustable spanner that has a handle provided with a first jaw at one end. A lever is pivotally connected to the handle and has coupled at one end a second jaw. The jaw is coupled to the lever by a link. The link is pivotally connected at one end to the second jaw and pivotally connected at another end to the lever. A cam is carried in slot formed in link. An elongate slot is cut in a head portion of the handle. As the lever is pivoted with respect to the handle the cam rides in slot and the jaws and move linearly with respect to each other. The cam and slot cooperate to form a locking mechanism. The locking mechanism has a free state corresponding to the cam being disengaged from the slot in which the jaws are able to move relative to each other and the locking state in which the cam engages the slot whereby the jaws are locked against movement away from each other. The locking mechanism remains in the free state until the lever is pivoted in a first direction relative to the handle to a position where the jaws can grip a nut or the like placed therebetween. Upon further movement in the first direction, the lever then operates via the link to rotate the cam into engagement with the slot thereby locking the jaws against movement away from each other. Upon releasing the handle, a return spring rotates the cam in an opposite direction lifting it away from slot so as to return the locking mechanism to the free state.
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Inventors:
Rally Anthony Graham, Alford
Application Number:
JP50095394A
Publication Date:
August 24, 1995
Filing Date:
June 03, 1993
Export Citation:
Assignee:
Rally Anthony Graham, Alford
International Classes:
B25B13/14; B25B13/12; B25B13/18; B25B13/22; (IPC1-7): B25B13/14
Attorney, Agent or Firm:
Hitoshi Maeda (1 person outside)