Brakes – Internal-resistance motion retarder – Controlled by an operator remote from retarder
Patent
1989-07-11
1990-10-23
Graham, Matthew C.
Brakes
Internal-resistance motion retarder
Controlled by an operator remote from retarder
188280, 254277, 254392, 207 34, 207113, 207118, F16F 946
Patent
active
049644912
ABSTRACT:
A system which limits the intensity of a snap load imposed in a tether or cable, used, for example, in the recovery of an object at sea, includes a floating plate for connection to the cable and a support housing for connection to the object being recovered. The system also includes an actuatable mechanism extending between and connected to the plate and housing. The actuatable mechanism is movable from an initial position toward a deflected position in response to the introduction of a snap load in the cable caused by the occurrence of the sudden removal of a slack condition in the cable. The system further includes a hydraulic or other fluid arrangement coupled to the actuatable mechanism for generating a shock load within the mechanism in response to the introduction of the snap load in the cable which permits movement of the mechanism toward the deflected position while limiting the tensile load imposed on the cable to a known value that the cable can withstand and reducing the separation velocity toward zero. The system also includes a restoring mechanism operable for causing extension of the actuatable mechanism from the deflected position back to the initial position in response upon reintroduction of another slack condition in the cable.
REFERENCES:
patent: 2136596 (1938-11-01), Smith
patent: 3476354 (1969-11-01), Stubblefield
patent: 3512657 (1970-05-01), Chambers
patent: 3734478 (1973-05-01), Lohr
patent: 3857555 (1974-12-01), Mori et al.
patent: 4076255 (1978-02-01), Houghton
patent: 4131266 (1978-12-01), Carter
patent: 4630542 (1986-12-01), Peyre et al.
patent: 4724970 (1988-02-01), Kuhn
"Depth Compensated Shock Absorber", Douglas W. Murphy, Navy Case No. 59,3 Navy TOB V.1, #1, May '76.
Buecher Roger W.
Dombrowski James H.
Mummery Herbert L.
Yumori Isao R.
Fendelman Harvey
Graham Matthew C.
Kagan Michael A.
Keough Thomas Glenn
The United States of America as represented by the Secretary of
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