Material or article handling – Vertically swinging load support – Shovel or fork type
Patent
1990-05-07
1992-05-05
Werner, Frank E.
Material or article handling
Vertically swinging load support
Shovel or fork type
172275, 403 24, E02F 370
Patent
active
051102544
ABSTRACT:
A coupling is used for releasably connecting tools to the articulated arm of excavators and other heavy duty equipment. The coupling includes a first coupling member, a second coupling member, a locking member provided on the first coupling member and movable between lock and release positions, a spring arranged between the first coupling member and the locking member for urging the locking member into the lock position, and a hydraulically operated release mechanism provided on the first coupling member for moving the locking member into the release position in opposition to the force of the spring. Hydraulic fluid at a pressure relief pressure level is applied through a first non-return valve to release the locking member and permit detachment of one tool and attachment of another tool; the pressurized hydraulic fluid is then returned through a second non-return valve to return the locking member into the lock position, thereby retaining the newly attached tool under pressure of the spring.
REFERENCES:
patent: 3782249 (1974-01-01), Drone
patent: 3934738 (1976-01-01), Arnold
patent: 3985249 (1976-10-01), Aker et al.
patent: 4127203 (1978-11-01), Arnold
patent: 4136792 (1979-01-01), Wilson et al.
patent: 4187050 (1980-02-01), Barbee
patent: 4214840 (1980-07-01), Beales
patent: 4243356 (1981-01-01), Takojima
patent: 4251181 (1981-02-01), Drott et al.
patent: 4279085 (1981-07-01), Arnold
patent: 4311428 (1982-01-01), Arnold
patent: 4345872 (1982-08-01), Arnold
patent: 4417844 (1983-11-01), de Pingon
patent: 4457085 (1984-07-01), Arnold
patent: 4586867 (1986-07-01), Stafford
patent: 4787237 (1988-11-01), Houston et al.
patent: 4824319 (1989-04-01), Arnold
patent: 4833760 (1989-05-01), Sundstrom
patent: 4850790 (1989-07-01), Johnson et al.
patent: 4955779 (1990-09-01), Knackstedt
Eller James T.
Werner Frank E.
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