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
2006-07-21
2009-02-24
Langdon, Evan H (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
C254S338000, C211S117000, C248S317000
Reexamination Certificate
active
07494110
ABSTRACT:
An arrangement for raising and lowering relative light weight objects from a ground position to a high storage position. A bracket is secured to the high storage position and supports a vertical rotatable shaft, with a pair of horizontal reels and an automatic lock position. A rod is detachably attached to the shaft and extends horizontally downwardly to the ground position. Rotation of the shaft around its central axis causes rotation of the reels. The reels are affixed to two lines which extend generally horizontally from the reels, with the free ends of the lines extending over spaced pulleys and extending downwardly for attachment to the ground level. Rotation of the shaft allows raising and lowering of the object. A spring loaded mechanism associated with the shaft causes automatic locking of the reels in any position, and locks the reels upon raising to the high storage position. The spring loaded locking mechanism is responsive to a slight downward pull on the shaft to an unlocking position, and release of the shaft causes the reels to automatically lock.
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Lob Charles
Vanden Heuvel Paul G.
Godfrey & Kahn S.C.
Harken, Inc.
Langdon Evan H
Stewart Alan R.
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