Lifting clamp cam wear indicator and method

Details Lifting clamp cam wear indicator and method Lifting clamp cam wear indicator and method

1986-10-10

1987-10-27

Cherry, Johnny D.

Handling: hand and hoist-line implements

Grapple

Pivoted cam and hook

116208, 294902, B66C 148, G01D 2100

Patent

active

047025085

ABSTRACT:
A plate lifting clamp has an eccentric cam with spaced apart rounded teeth having sharp crested edges which are provided with gauge marks extending into each tooth. Excessive wear on the teeth may be visually observed by comparing the worn portion of each tooth to the location of the gauge marks.

REFERENCES:
patent: 1351530 (1920-08-01), Meals
patent: 2393101 (1946-01-01), Gardner
patent: 2706509 (1955-04-01), White
patent: 3384145 (1968-05-01), Wolfer
patent: 3414272 (1968-12-01), Rogers
patent: 4226274 (1980-10-01), Awaya et al.
patent: 4641877 (1987-02-01), Merrill

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