Tools – Wrench – screwdriver – or driver therefor – Responsive to torque on work
Patent
1980-07-03
1982-02-23
Jones, Jr., James L.
Tools
Wrench, screwdriver, or driver therefor
Responsive to torque on work
B25B 23142
Patent
active
043163971
ABSTRACT:
A torque wrench having a main body of fixed overall length and having a torque adjusting mechanism enclosed within the main body. The adjusting mechanism is controlled by a rotatable handle disposed about the main body. The adjusting mechanism includes a first part which is connected with the handle for joint rotation therewith, but which is constrained against axial movement. The adjusting mechanism further includes a second part having a polygonal portion extending into a polygonal recess in the first part to couple the first and second parts for joint rotation while permitting linear movement of the second part. The second part is designed to move linearly in response to joint rotation of the first and second parts in order to effect adjustment of the torque setting of the wrench. The handle contains a locking mechanism to prevent movement of the adjusting mechanism during operation of the torque wrench. The torque wrench is designed to provide for precise adjustment of the torque setting, and yet maintain a fixed wrench length, regardless of whether its torque is set, or is being adjusted.
REFERENCES:
patent: Re25547 (1964-04-01), Skidmore
patent: 2984133 (1961-05-01), Livermont
patent: 3577815 (1971-05-01), Bergquist
patent: 3581606 (1971-06-01), Grabovac
patent: 3772942 (1973-11-01), Grabovac
patent: 3890859 (1975-06-01), Grabovac et al.
patent: 4079639 (1978-03-01), Wood
patent: 4207783 (1980-06-01), Grabovac
patent: 4244248 (1981-01-01), Adell et al.
Skidmore Ray C.
Skidmore Richard H.
Jones Jr. James L.
Skidmore Engineering Div. Buckeye Gear Company
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