Implements or apparatus for applying pushing or pulling force – Device or member for contacting and guiding moving cable
Reexamination Certificate
2003-02-20
2004-12-14
Marcelo, Emmanuel (Department: 3654)
Implements or apparatus for applying pushing or pulling force
Device or member for contacting and guiding moving cable
C254S332000, C254S361000, C254S380000
Reexamination Certificate
active
06830235
ABSTRACT:
The present invention relates generally to certain new and useful improvements in hydraulic powered capstan attachments.
More particularly, the present invention relates to an apparatus for pulling electric or communication wire or any other desired load through conduit or open trenches over long distances from a stationary position.
BACKGROUND OF THE INVENTION
Heretofore, various attempts have been made to pull cable or wire through conduit or open trenches over long distances, but such attempts have been relatively unsuccessful. The relevant art is exemplified by the following United States patents:
U.S. Pat. No. 4,169,580 issued in 1979 to Hatlapa et al. entitled “HYDRAULIC WINCH FOR SHIPBOARD USE”;
U.S. Pat. No. 4,234,167 issued in 1980 to Lane entitled “AUTOMATIC INHAUL WINCH SYSTEM”;
U.S. Pat. No. 4,458,880 issued in 1984 to Conti entitled “METHOD AND APPARATUS TO MEASURE TENSION IN A PULL LINE FOR CABLE”;
U.S. Pat. No. 4,852,856 issued in 1989 to Correll entitled “SYSTEM FOR LAYING COMMUNICATIONS CABLE ESPECIALLY ADAPTED FOR AERIALLY STRINGING FIBER OPTIC CABLE AND ADAPTED FOR INTERCHANGEABLE USE WITH CONVENTIONAL CABLE”;
U.S. Pat. No. 5,029,816 issued in 1991 to Langston entitled “LOW FRICTION PULLING OF FIBER OPTIC CABLE IN CONDUIT”;
U.S. Pat. No. 5,324,006 issued in 1994 to Pickrell entitled “APPARATUS FOR PULLING CABLE”;
U.S. Pat. No. 5,503,370 issued in 1996 to Newman et al. entitled “METHOD AND APPARATUS FOR THE INJECTION OF CABLE INTO COILED TUBING”;
U.S. Pat. No. 5,516,080 issued in 1996 to McVaugh entitled “CABLE PLACING APPARATUS”;
U.S. Pat. No. 5,533,711 issued in 1996 to Pickrell entitled “APPARATUS AND METHOD FOR PULLING CABLE”;
U.S. Pat. No. 5,599,004 issued in 1997 to Newman et al. entitled “APPARATUS FOR THE INJECTION OF CABLE INTO COILED TUBING”;
U.S. Pat. No. 5,664,765 issued in 1997 to Pickrell entitled “APPARATUS AND METHOD FOR PULLING CABLE”;
U.S. Pat. No. 5,683,073 issued in 1997 to Pickrell entitled “APPARATUS AND METHOD FOR PULLING CABLE”;
U.S. Pat. No. 6,086,050 issued in 2000 to Wiederkehr et al. entitled “APPARATUS FOR PULLING A TRACTION CABLE THROUGH AN UNDERGROUND PIPE”; and
U.S. Pat. No. 6,109,082 issued in 2000 to Taylor et al. entitled “AUTOMATIC SET-UP WIRE DRAWER”.
SUMMARY OF THE INVENTION
The present invention provides a hydraulic powered capstan attachment for pulling a load over long distances from a stationary position, comprising, in combination: a vehicle having a boom and a source of hydraulic power; a hydraulic motor selectively connectible to said source of hydraulic power and having an output shaft; a mounting frame having a first portion thereof which is rotatably connectible to said boom, and having a second portion thereof to which said hydraulic motor may be mounted and through which said output shaft may extend; a capstan removably connectible to said output shaft; and a rope wound around said capstan and having a first end thereof removably connectible to said load and having a second end thereof controlled by a worker so that when the worker pulls said rope tight on said capstan, the capstan begins pulling said load.
A primary object of the invention is to provide a novel hydraulic capstan arrangement for pulling electric or communication wire, or any other desired load, through conduit or open trenches over long distances from a stationary position.
Another object of the present invention is to provide a hydraulic powered capstan attachment as described hereinabove wherein the frame may be attached to a backhoe in place of the conventional backhoe bucket.
A further object of the present invention is to provide a hydraulic powered capstan attachment as described hereinabove for mounting upon any suitable vehicle, such as, for example, a Bobcat 231 Excavator.
A further object of the present invention is to provide a hydraulic powered capstan attachment as described hereinabove wherein the capstan can be selectively removed from the output shaft and the hydraulic motor.
Yet another object of the present invention is to provide a hydraulic powered capstan attachment as described hereinabove, which includes a quick attach system which could be incorporated in the attachment to simplify changing attachments on the excavator or other associated vehicle.
A further object of the present invention is to provide the hydraulic powered capstan invention as described hereinabove, which may include a bucket angle or swivel attachment.
Another object of the present invention is to provide a hydraulic powered capstan attachment as described hereinabove, wherein the attachment is designed and built to aide in pulling primary and secondary power cable through conduit or through a ditch.
The present invention possesses many other advantages and features which will become more apparent to those persons skilled in this particular area of technology or others when reading the detailed description of one exemplary preferred embodiment of the present invention as set forth hereinbelow in conjunction with the accompanying drawings.
REFERENCES:
patent: 4234167 (1980-11-01), Lane
patent: 4312497 (1982-01-01), Whaley
patent: 5029816 (1991-07-01), Langston
patent: 5240298 (1993-08-01), Teaby et al.
patent: 5683073 (1997-11-01), Pickrell
patent: 6073917 (2000-06-01), Plummer
patent: 6152424 (2000-11-01), Lapat
patent: 6267356 (2001-07-01), Crawford
patent: 6494437 (2002-12-01), Boyer
patent: 6578823 (2003-06-01), Johnson
patent: 6672568 (2004-01-01), Rawlinson
patent: 402068291 (1990-03-01), None
Burt Pamela S.
Marcelo Emmanuel
Weiner Irving M.
Weiner & Burt, P.C.
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