Trackless hoist with safety stop
United States Patent 3262520
US Patent References:
/0820637.html
- - 0820637

/1163237.html
- - 1163237

/1177170.html
- - 1177170

Constant tension drive
- - 2348090

Stop mechanism
- - 2419518


Inventors:
Bond, Frederick H.
Pilvelis, Laurence C.
Publication Date:
07/26/1966
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Assignee:
Bond, Frederick H.
Pilvelis, Laurence C.
Primary Class:
187/372
Other Classes:
187/407
International Classes:
B66B5/24; B66B5/16
US Patent References:
2550839Safety device for lifting and lowering apparatus