Stabilized single-motor lift system without top rails

Details Stabilized single-motor lift system without top rails Stabilized single-motor lift system without top rails

2011-03-04

2011-12-06

Marcelo, Emmanuel M (Department: 3654)

Implements or apparatus for applying pushing or pulling force

Apparatus for hauling or hoisting load, including driven...

Device includes rotatably driven, cable contacting drum

C254S336000, C254S284000

Reexamination Certificate

active

08070134

ABSTRACT:
A lift system for raising and lowering a load including a rigid platform, four spaced fixed supports positioned around corners of the platform, and a power source connected to a first of the supports. First and second inextensible lines are each preferably fastened at one end to a third support diagonally opposing the first support, and at another end thereof to the power source. The first line preferably extends from the power source to the third support, passing to a plurality of four pulleys each attached to a corner of the platform and over a pulley attached to the second support. The second line preferably extends from the power source to the third support, passing to a plurality of four pulleys each attached to a corner of the platform and over a pulley attached to the fourth support. The lift system produces a mechanical advantage of four.

REFERENCES:
patent: 3801070 (1974-04-01), Piasecki
patent: 4401335 (1983-08-01), Godbersen
patent: 5090841 (1992-02-01), Penick, Jr. et al.
patent: 5427471 (1995-06-01), Godbersen
patent: 5769568 (1998-06-01), Parkins et al.
patent: 5772360 (1998-06-01), Wood, II
patent: 5957623 (1999-09-01), Sargent et al.
patent: 6230639 (2001-05-01), McLaughlin et al.
patent: 6408776 (2002-06-01), McLaughlin et al.
patent: 6470816 (2002-10-01), Golden et al.
patent: 6484655 (2002-11-01), Gibson
patent: 6640736 (2003-11-01), McLaughlin et al.
patent: 7070171 (2006-07-01), Mangin
patent: 7117805 (2006-10-01), Shackelford, Jr.
patent: 7383781 (2008-06-01), Griffin
patent: 7407150 (2008-08-01), Bellantoni
patent: 7607644 (2009-10-01), Gibb et al.

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