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:
Sep. 30, 2014

Filed:

Dec. 28, 2011
Applicants:

Viral Shah, Houston, TX (US);

William L. Carbaugh, Humble, TX (US);

Leonard G. Childers, Kingwood, TX (US);

Inventors:

Viral Shah, Houston, TX (US);

William L. Carbaugh, Humble, TX (US);

Leonard G. Childers, Kingwood, TX (US);

Assignee:

Hydrill USA Manufacturing LLC, Houston, TX (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 29/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A shear blade attached to a ram block. At least one bolt passage is formed at an angle at the top of the ram block. A bolt passage is formed in the shear blade that corresponds with the bolt passage on the tam block. A bolt introduced into the bolt passage of the ram block and also the bolt passage in the shear blade attaches the shear blade to the ram block. By using this technique for attaching the shear blade to the ram block, surface area of a front face of the shear blade is not further reduced. Therefore, the strength of the shear blade is increased.


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