Rotary shafts – gudgeons – housings – and flexible couplings for ro – With auxilliary indicator or alarm
Patent
1987-12-21
1991-02-05
Stodola, Daniel P.
Rotary shafts, gudgeons, housings, and flexible couplings for ro
With auxilliary indicator or alarm
74665R, 244 75R, B64C 1334, F16H 2522, G08B 2100
Patent
active
049901222
ABSTRACT:
A system for damping relative rotation between two axially driven shafts (30) rotating in the same direction and for indicating failure of one of the shafts is disclosed. The system includes a coupling mechanism (34), coupling the driven shafts together to transmit torque from one of the shafts to the other of the shafts upon a predetermined relative angular rotation between the two shafts and providing a free zone of relative rotation between the shafts without transmitting torque between the shafts when the shafts have moved less than a predetermined angular rotation with respect to each other within the free zone of rotation. A mechanism (32) is provided which is coupled to the shafts for producing movement of a movable member (40) which is directly proportional to the degree of relative rotation between the shafts (30) during relative rotation between the shafts less than the predetermined relative angular rotation within the free zone of rotation. A retarding mechanism (62) is provided for retarding the motion of the movable member (40) with a force for retarding movement of the movable member when the shafts are rotating relatively with respect to each other through an angle less than the predetermined relative angular rotation within the free zone of rotation which restricts the rate of relative motion of the shafts with respect to each other. Further, an indicator (66) is provided which produces a signal upon movement of the shafts with respect to each other through the predetermined relative angular rotation within the free zone of rotation.
REFERENCES:
patent: 3169178 (1965-02-01), Notchev et al.
patent: 3935754 (1976-02-01), Comollo
patent: 4276758 (1981-07-01), Coman et al.
patent: 4559023 (1985-12-01), Uchibaba et al.
patent: 4625843 (1986-12-01), Maltby et al.
Stodola Daniel P.
Sundstrand Corporation
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