Joints and connections – Interfitted members – Clamped members
Patent
1993-04-14
1995-05-23
Denion, Thomas E.
Joints and connections
Interfitted members
Clamped members
403318, 403298, 37457, B25G 320
Patent
active
054175186
ABSTRACT:
An improved keeper pin mount and method for releasably locking an excavation tooth to an adaptor of an excavation bucket. The keeper pin has a wedge block and a wedge. The wedge block has a shear pin and a single replaceable tooth. The wedge has a series of teeth that progressively engage the single tooth of the wedge block. The single tooth has a spring steel projection bonded to a rubber block. This block is removably received in a recess in the wedge block. The rubber block bears against the adjacent inner surface of the recess of the wedge block. The wedge block is first put into place in the hole provided for the keeper pin; then the wedge is inserted in the hole, and the teeth progressively move past the single tooth of the wedge block. The resilience of the rubber block to which the single tooth is bonded allows the wedge block to be driven past the teeth of the wedge until the keeper pin is tightly in place. This causes the spring tooth of the wedge block to engage one of the teeth of the wedge. A sheer pin on the wedge block prevents the keeper pin from being "jacked out". To remove the keeper pin, the wedge block is driven downwardly, thus shearing the shear pin and allowing the keeper pin to fall through the opening. The keeper pin can be reused by replacing the shear pin.
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