Keeper pin system for shovel teeth

Details Keeper pin system for shovel teeth Keeper pin system for shovel teeth

1979-02-14

1980-02-05

Shedd, Wayne L.

Joints and connections

Including ancillary means blocking disconnection of joint

Blocker for assembled joint retainer

403 2, 403316, 403374, 403409, B25G 300, F16B 300

Patent

active

041870352

ABSTRACT:
Improved locking or keeper pin system for replaceably retaining digger teeth on large power excavator shovels includes a pair of wedge-shaped keeper pin members which cooperate to produce a seizing taper lock. The keeper pin members are easily installed and released from the top of the tooth. One of the keeper pin members includes a retaining spring which snaps into a recess in the tooth and base member to provide positive locking. The other keeper pin member has a hardened retaining hook which engages a lip on the base member. An access port in the top of the tooth permits a chisel to be brought into contact with the top of the retaining hook. The retaining hook is easily severed, using the lip as an anvil, to release the lock when the tooth is to be replaced.

REFERENCES:
patent: 2312802 (1943-03-01), Crawford
patent: 2651390 (1953-09-01), Polanin
patent: 2958562 (1960-11-01), Jones

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