192 clutches and power-stop control – Clutches – Torque responsive
Patent
1991-07-19
1992-03-10
Braun, Leslie A.
192 clutches and power-stop control
Clutches
Torque responsive
464 39, 81475, F16D 702
Patent
active
050943308
ABSTRACT:
A power transmission mechanism for a motorized hand tool, comprising a socket, a first spring set in said socket, a first rotary member inserted in said socket and stopped against said first spring, a revolving shaft inserted through said first rotary member, said first spring and said socket and connected to a power unit, a second rotary member inserted in said first rotary member, a cap attached to said first rotary member at an opposite end, and a second spring retained between said second rotary member and said cap, wherein said gap and said first rotary member are forced to move backwards toward said socket, when the resisting force which acts onto said tool surpasses the driving force from said revolving shaft, causing said second rotary member to disconnect from said first rotary member and said revolving shaft.
REFERENCES:
patent: 363635 (1987-05-01), Henrichsen
patent: 1169193 (1916-01-01), Ramelli
patent: 1828370 (1931-10-01), Huddle
patent: 1835135 (1931-12-01), Bertrand
patent: 2390908 (1945-12-01), Young
patent: 2725770 (1955-12-01), Short et al.
patent: 2733622 (1956-02-01), Evans
patent: 3752278 (1973-08-01), States
patent: 4768634 (1988-09-01), Quick et al.
patent: 4913242 (1990-04-01), Lo
Braun Leslie A.
Whitelaw Nicholas
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