Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – Repair – replacement – or improvement
Reexamination Certificate
2007-02-13
2007-02-13
Singh, Sunil (Department: 3673)
Hydraulic and earth engineering
Subterranean or submarine pipe or cable laying, retrieving,...
Repair, replacement, or improvement
C405S184000, C254S249000, C254S254000, C254S13430R, C226S150000, C226S163000
Reexamination Certificate
active
10352267
ABSTRACT:
A cable pulling machine of the invention includes a frame, a mechanical linkage including first and second links having first and second cable gripping shoes disposed thereon respectively in opposed positions, a latching cylinder actuable to cause the mechanical linkage to pivot on multiple axes to bring the shoes into engagement with a cable disposed therebetween, a main cylinder having one end mounted on the frame and actuable to move the linkage in a manner effective to pull the cable in a pulling stroke once the latching cylinder has brought the shoes into engagement with the cable, and a mechanism for extending and retracting the main and latching cylinders. The machine may also include a mechanism for holding the cable in tension between pulling strokes, such as a pivoting wedge mechanism as described hereafter.
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“Lateral Bursting—Grundotugger,” TT Technologies website, www.tttechnologies.com, 4 pages.
“Xpandit—Trenchless Pipe Replacement” brochure, Miller Pipeline Corporation, 1994, 8 pages.
“6 Ton Hydraulic Simm-Pul,” Assembly and Operating Instructions, Bert Systems Ltd, 7 pages.
“I-150 Linear Winch,” AmClyde Engineered Products, Inc., 1 page.
Earth Tool Company L.L.C.
Meyers Philip G.
Singh Sunil
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