Handling: hand and hoist-line implements – Grapple – Pivoted cam and hook
Patent
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
Choung Moon
Weiner Jerome
Cherry Johnny D.
Cooper Industries
Scott E. E.
Thiele A. R.
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