Pivot locking device

Details Pivot locking device Pivot locking device

1997-01-08

1999-01-05

Underwood, Donald W.

Material or article handling

Vertically swinging load support

180 685, B66C 100

Patent

active

058554670

ABSTRACT:
The present invention is directed to a pivoted lifting device having a main support frame selectively pivotable about a horizontal axis and engagement arms connected to the main support frame by a pivot pin. The engagement arms include an engagement surface. The pivoted lifting device allows the entire engagement surface to contact an article prior to the article being moved from an at rest position. The invention includes hydraulically actuated spring biased shaft having an unlocked position and also a locked position wherein it is located adjacent the engagement arms to lock the engagement arms in an upright position.

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