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:
May. 31, 2005
Filed:
Jan. 06, 2003
Alexander D. Draper, Seattle, WA (US);
Nigel Bruce Edward Steere, Seattle, WA (US);
Kenneth Wayne Heinle, Snohomish, WA (US);
Alexander D. Draper, Seattle, WA (US);
Nigel Bruce Edward Steere, Seattle, WA (US);
Kenneth Wayne Heinle, Snohomish, WA (US);
K-2 Corporation, Vashon, WA (US);
Abstract
A ladder strap () is made by joining—for example, by co-molding—a first, relatively supple material, defining a lower strap portion () with a second, relatively hard material defining an upper strap portion (). The teeth () of the ladder strap are comprises substantially of the harder, second material. In a preferred embodiment, the first and second materials are thermoplastic urethanes, and the co-molding is done using an injection molding process. The co-molding process may be accomplished with co-injection, wherein the two materials are injected at about the same time, or the first material may be injected into a first mold cavity and allowed to partially set, after which the cavity is modified to accommodate the second material.