Implements or apparatus for applying pushing or pulling force – Apparatus for hauling or hoisting load – including driven... – Device includes rotatably driven – cable contacting drum
Reexamination Certificate
2009-05-04
2011-11-15
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
C254S286000, C254S338000, C254S370000
Reexamination Certificate
active
08056883
ABSTRACT:
A manual storage lift system for efficiently hoisting articles to a raised position for providing temporary or permanent storage for the articles. The manual storage lift system generally includes a drive unit including a mounting plate mounted on a vertical surface, a shaft rotatably connected to the mounting plate, a spool coaxially positioned along the shaft, wherein the spool rotates independently of the shaft, at least one elongated member wound upon the spool, a hand crank connected to the shaft for winding or unwinding the at least one elongated member upon the spool and a brake assembly mounted to the drive unit, wherein the brake assembly includes a torsion spring. A first force applied with the hand crank in a rotational direction upon the torsion spring lessens a tension of the torsion spring allowing the torsion spring and the spool to rotate. A second force applied with the spool in the rotational direction upon the torsion spring increases a tension of the torsion spring preventing the torsion spring and the spool from rotating. The elongated members connect to a platform through a series of pulleys mounted on an overhead horizontal surface to raise and lower the platform through operation of the hand crank.
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Costco, “Racor ProStor Heavylift”, <retrieved from http://www.costco.com/Browse/Product.aspx? ...> Apr. 22, 2009, 2 pages.
Marcelo Emmanuel M
Neustel Law Offices
LandOfFree
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