The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Nov. 17, 2015

Filed:

Aug. 01, 2011
Applicants:

Timothy J. Trautman, East Auroroa, NY (US);

Patrick Shawn Reilly, Greenville, SC (US);

Richard Joseph Donegan, Constantia, NY (US);

Robert Michael Whitney, Whitesboro, NY (US);

Inventors:

Timothy J. Trautman, East Auroroa, NY (US);

Patrick Shawn Reilly, Greenville, SC (US);

Richard Joseph Donegan, Constantia, NY (US);

Robert Michael Whitney, Whitesboro, NY (US);

Assignee:

Riverhawk Company, New Hartford, NY (US);

Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 19/00 (2006.01); F16B 31/04 (2006.01);
U.S. Cl.
CPC ...
F16B 31/04 (2013.01); Y10S 411/916 (2013.01);
Abstract

A tensioning system for tensioning a stud is provided. The system includes a nut having an external surface, an internal surface engaging the external surface of the stud or puller screw, and at least two bores defined therein. The posts have first and second ends and are disposed in the bores. The first ends engage a stop surface, and the second ends extend outwardly from the bores. A cylinder includes an internal surface engaged with the external surface of the nut, and has a bore defined therein. A locking screw may be threadably positioned within the cylinder bore and engages the nut. A piston is positioned within the cylinder to define a hydraulic chamber and is configured for being engaged with the second ends of the posts. Further, a biasing member is disposed between the nut and piston. A tensioning system safety guard is also provided.


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