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.
Patent No.:
Date of Patent:
Mar. 21, 1978
Filed:
Nov. 05, 1976
Applicant:
Inventor:
James B Shahan, Tulsa, OK (US);
Assignee:
American Hoist & Derrick Company, Tulsa, OK (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B21L / ; F16G / ;
U.S. Cl.
CPC ...
59 3 / ; 59 86 ;
Abstract
A heavy duty shackle for use under great loads, such as in anchor lines. The shackle is formed from a cylindrical bar rod by shaping the ends to a reduced diameter, and forging the central portion into a flattened shape having the cross-section of a wide shallow U shape. The bottom surface of the central section is in the form of a portion of a circular cylinder. The ends of the bar are flattened and a central opening is forged and based for a pin. The formed bar is then bent in the form of a bow to provide an eye for the shackle, with two parallel ears spaced a selected distance apart.