Controlled torque output tool

Details Controlled torque output tool Controlled torque output tool

1976-09-15

1979-05-22

Scott, Samuel

Machine element or mechanism

Gearing

Plural power paths to and/or from gearing

744115, 192 4R, 81 524R, F16H 344, B25B 1700

Patent

active

041552750

ABSTRACT:
A torque tool has a shaft which is driven by an input motor to transmit torque through an output gear. Reactive torque generated in reaction to the output torque is transmitted through a floating reaction ring gear to a brake assembly by means connecting the floating or rotatable ring gear to the brake assembly. The brake assembly is retained against rotation by resilient spring means of a preselected rotation resistance strength. Upon attainment of a preselected output torque and concomitant reactive torque, the brake assembly is shifted against the resistance offered by the springs so that the brake assembly contacts and brakes the shaft to limit the torque transmitted thereby. The means connecting the rotating ring gear to the brake assembly may include additional gear means designed to take up a portion of the reactive torque so that only a preselected balance of the total reactive torque is available to overcome the resistance offered by the resilient springs.

REFERENCES:
patent: 2144769 (1939-01-01), Melmer
patent: 2152517 (1939-03-01), Whitney et al.
patent: 2600327 (1952-06-01), Ridge
patent: 2764272 (1956-09-01), Reynolds
patent: 2777346 (1957-01-01), Brame
patent: 3115791 (1963-12-01), Dean
patent: 3162250 (1964-12-01), Sindelar
patent: 3289715 (1966-12-01), De Groff et al.
patent: 3323394 (1967-06-01), Bangerter et al.
patent: 3613853 (1971-10-01), Linthicum
patent: 3834467 (1974-09-01), Fuchs

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