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:
Dec. 14, 1999
Filed:
Sep. 01, 1998
Kenji Kobayashi, Tsubame, JP;
K.K. Endo Seisakusho, Niigata-ken, JP;
Abstract
A golf club with decreased air resistance in swinging to improve a head speed. A number of depressions 26 are formed on a back 4, a crown 6 and the side surfaces of a heel 7 and toe 8 of a head 1 of a wood club for example. Each depression 26 has a first side narrower than a second side thereof so that it is egg-shaped. The section of each depression 26 is formed smooth such that a slope at the first side is more gentle than that at the second side. Each depression 26 is desirably so oriented that its comparatively gentle slope is positioned at the face 3 side. Owing to these gentle slopes, the generation of a dead air region is suppressed at the inflow side of each depression 26, thus further decreasing an air resistance in swinging.