Semi-automatic coupling apparatus

Details Semi-automatic coupling apparatus Semi-automatic coupling apparatus

1991-12-26

1993-01-19

Reese, Randolph A.

Excavating

Snow or ice removing or grooming by portable device

Railway clearer

37103, 172272, 403322, 403325, 403330, 414686, 414723, E02F 328, E02F 396

Patent

active

051797941

ABSTRACT:
A semi-automatic coupling apparatus is installed at the terminus of a backhoe dipper stick, crane boom or similar device and facilitates connection and disconnection of various earth working and material handling attachments. The coupler includes first, forward facing throats which engage a forward crossbar on an attachment such as a bucket and second, downward facing throats which engage a rear crossbar. A latching mechanism includes a pawl actuated by advance of the rear crossbar into the rear throats. The pawl releases a spring biased wedge member which retains the rear crossbar in the rear throat. A reset linkage may be manually activated to retract the wedge and permit release of the bucket from the coupler. An alternate embodiment of the coupler includes a remotely activated hydraulic or pneumatic cylinder which is coupled to the spring biased wedge member.

REFERENCES:
patent: 4187050 (1980-02-01), Barbee
patent: 4214840 (1980-07-01), Beales
patent: 4632595 (1986-12-01), Schaeff
patent: 4810162 (1989-03-01), Fosler
patent: 4986722 (1991-01-01), Kaczmarczyk et al.
patent: 5082389 (1992-01-01), Balemi

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