Accession Number : AD0164977

Title :   Hydraulic Claw With Locking Mechanism.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Sayre,Jack L. , Jr. ; Fishel,Kenneth R.

Report Date : 29 MAY 1973

Pagination or Media Count : 6

Abstract : The patent relates to a device whereby a claw for grasping and recovering an object is articulated by a hydraulically responsive actuator which additionally has the capability for exerting a substantial gripping force on the object. After the object has been gripped, allowing its recovery, a pawl and ratchet carried on the claw mutually engage to lock the claw in its gripped position. The hydraulic actuator and the pawl-ratchet combination are hydraulically coupled to retain the claw in its locked gripped position in the event of hydraulic failure. With availability of hydraulic pressure, suitable hydraulic connections allow disengagement of the pawl from the ratchet when hydraulic pressure is fed to the claw actuator for causing release of the claw. In an electrohydraulic system, a solenoid actuated pawl and ratchet mechanism, with appropriate connections also provide for locking the claw in its locked position and for its subsequent release.

Descriptors :   *Manipulators, *Patents, *Oceanographic equipment, Hydraulic actuators, Hydraulic couplings, Locking fastener devices, Release mechanisms

Subject Categories : Machinery and Tools
      Marine Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE