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:
Jun. 23, 1998
Filed:
Oct. 03, 1996
Timothy Tylaska, Mystic, CT (US);
Other;
Abstract
An improved shackle apparatus that introduces improvements to the basic shackle design to allow for easy release under load, a high strength to weight ratio, and low wear on sliding surfaces. Easier release under heavy load is accomplished with a nonsymmetrical trigger hole design. The contour of the trigger hole pushes the fid to the side of the trigger, thus producing greater leverage on the trigger that would have been applied with the same amount of force as originally applied to the fid. Internal design of the improved shackle apparatus has incorporated the trigger spring in the shank resulting in a simplified design while providing for a high strength to weight ratio. Likewise, a reinforced trigger pivot pin hole improves tensile strength and increases the bearing contact area of the trigger. Low wear on sliding surfaces is aided by a new 'cam action' hook design that allows the rope to roll over the hook area instead of sliding. As the hook completely opens, the offset distance of the 'cam action' design decreases until the hook and the shackle casing meet in a smooth transition.