Tools – Wrench – screwdriver – or driver therefor – Responsive to torque on work
Patent
1980-05-14
1982-01-19
Jones, Jr., James L.
Tools
Wrench, screwdriver, or driver therefor
Responsive to torque on work
81 5729, B25B 2314
Patent
active
043110720
ABSTRACT:
An improved speed handle ratchet wrench that can be used in either of two distinct modes of operation to rotate the drive member at the head end of the wrench. A clutch assembly disposed within the head housing transmits axial rotation of the handle to the drive member below a selected torque load level during the first operating mode, and prevents handle rotation under normal circumstances in response to oscillation of the handle in the second operating mode. The clutch assembly includes a clutch sleeve and a pair of coaxial clutch member having frusto-conical surfaces engagable with the inside surfaces of the sleeve. Torque adjustment is achieved by moving the coaxial members towards or away from each other to vary the frictional engagement between such members and the sleeve.
REFERENCES:
patent: 3850055 (1974-11-01), Triplett
patent: 4086829 (1978-05-01), Hudgins
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