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:
Oct. 11, 2016

Filed:

Mar. 14, 2013
Applicant:

Irwin Industrial Tool Company, Huntersville, NC (US);

Inventors:

Matthew C. Green, Amherst, MA (US);

Christopher F. Fitzgerald, Belchertown, MA (US);

Assignee:

Irwin Industrial Tool Company, Huntersville, NC (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B27B 21/06 (2006.01); B23D 51/12 (2006.01);
U.S. Cl.
CPC ...
B23D 51/125 (2013.01); Y10T 29/49817 (2015.01); Y10T 29/49881 (2015.01);
Abstract

A tensioning mechanism for a hack saw blade extends through a pin holder mounting slot of a hack saw frame and applies tension to a hack saw blade attached thereto. The tensioning mechanism includes a first portion having a configuration that, with respect to a configuration of the slot, permits rotation of the tensioning mechanism when the first portion extends through the mounting slot. The tensioning mechanism also includes a second portion having a configuration that, with respect to the configuration of the slot, engages into the slot only in select rotational orientations thereof relative to the slot, wherein one of said orientations is angularly separated from another orientation by a substantially set rotational angle of the second portion. The tensioning mechanism further includes first and second mechanisms configured to prevent removal of the tensioning mechanism from the mounting slot once extended therethrough.


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