Implements or apparatus for applying pushing or pulling force – Portable implements or apparatus for tensioning flexible... – Including rotatably driven drum for engaging either material...
Reexamination Certificate
2011-03-22
2011-03-22
Langdon, Evan H (Department: 3654)
Implements or apparatus for applying pushing or pulling force
Portable implements or apparatus for tensioning flexible...
Including rotatably driven drum for engaging either material...
C254S217000, C254S223000, C024S0680AS, C024S0690ST
Reexamination Certificate
active
07909306
ABSTRACT:
An improved ratchet strapping device is provided, comprising a frame, an axle, and a handle pivotally installed on the axle. Ratchets are mounted on the axle and adjacent to the exterior of the frame. The frame includes a first detent on the outside of the frame which engages the ratchet. A release device is mounted on the handle, wherein the release device includes a second detent on the outside of the handle which engages the ratchets at another location. The frame includes a first cam having a radius greater than the ratchets and on which the second detent slides, and the handle includes a second cam having a radius greater than the ratchets and on which the first detent slides. Placement of the ratchet and detent components on the outside of the device permits spooling of substantially all of the strap for storage or unused portions of the strap during use.
REFERENCES:
patent: 4199182 (1980-04-01), Sunesson
patent: 5271606 (1993-12-01), Kamper
patent: 6820862 (2004-11-01), Terzagi
patent: 7281701 (2007-10-01), Huang et al.
patent: 7377484 (2008-05-01), Williams
patent: 7448596 (2008-11-01), Chang
patent: 7464915 (2008-12-01), Liu et al.
patent: 7510168 (2009-03-01), Lin
patent: 7651072 (2010-01-01), Chang
patent: 7758023 (2010-07-01), Chang
Baker Donelson et al
Delaune Warner J.
Langdon Evan H
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