Torque limiting and overtravel stop device

Details Torque limiting and overtravel stop device Torque limiting and overtravel stop device

1986-03-17

1988-06-21

Dorner, Kenneth J.

192 clutches and power-stop control

Vortex-flow drive and clutch

With brake

192141, 192143, 74 8915, 74412TA, 744248B, F16D 6700

Patent

active

047519886

ABSTRACT:
To provide a torque limiting and overtravel stop device for aircraft actuation systems, where the overtravel stop is lightweight, bi-directional, repeatable and on-jamming, and allows for many revolutions of rotation between each end stop, the device includes a drive shaft having an input end and an end disposed in remote relation to the input end. A torque limiter is operatively associated with the drive shaft for rotational movement therewith and includes an input side adapted to receive input torque from the drive shaft and an output side adapted to transmit input torque from the drive shaft. The device includes a driven shaft having an input end driven by said drive shaft and an end disposed in remote relation to the input end with a traveling nut being disposed on the driven shaft for movement between the ends thereof. Gears are operatively related between said drive shaft and said driven shaft to normally provide a relative speed difference between the traveling nut and the driven shaft. The device further includes jaws for stopping movement of the traveling nut at the ends of the driven shaft so as to cause a torque build-up across the torque limiter by reason of the speed difference between the gears and the drive shaft sufficient to cause the torque limiter to prevent rotation of the drive shaft in one rotational direction.

REFERENCES:
patent: 826858 (1906-07-01), Jones
patent: 2227114 (1940-12-01), Tear
patent: 2778471 (1957-01-01), Kuhn
patent: 2837925 (1958-06-01), Rowley et al.
patent: 2854113 (1958-09-01), Hallden
patent: 2902876 (1959-09-01), Pollock
patent: 3221118 (1965-11-01), Hoover
patent: 4064981 (1977-12-01), House et al.
patent: 4479397 (1984-10-01), Jelinek et al.

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