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:
Jan. 08, 2002
Filed:
Oct. 04, 2000
Ronald K. Hettinger, Oceanside, CA (US);
Richard C. Helmstetter, Rancho Santa Fe, CA (US);
J. Neil Hall, Carlsbad, CA (US);
Augustin W. Rollinson, San Diego, CA (US);
Kamal Sarkar, San Diego, CA (US);
Joshua G. Breier, San Marcos, CA (US);
John G. Guard, Oceanside, CA (US);
Pijush K. Dewanjee, Carlsbad, CA (US);
Callaway Golf Company, Carlsbad, CA (US);
Abstract
The present invention is a golf club ( ) having a club head main body ( ) with a hollow interior ( ), a support layer defining a depth of a recess ( ), a polymer insert ( ) in the recess ( ), an isolation layer ( ) and a weight body ( ). The polymer insert ( ) is composed of a thermosetting polyurethane material having a Shore D hardness in the range of 42 to 55, and a Bayshore rebound in the range of 51 to 60. The preferred thermosetting polyurethane material is formed from a p-phenylene diisocyanate prepolymer and a curing agent. The golf club ( ) is preferably a putter, however, it may be a wood or an iron. The particular thermosetting polyurethane provides a soft striking face for feel and a good rebound for distance. The weight body ( ) is preferably composed of a tungsten alloy, and the isolation layer ( ) is preferably composed of a thermoplastic polyurethane.