Abstract: An improved golf club head and set of clubs using progressively sized heads. The club head, of the sort generally referred to as "irons" has the usual striking and opposed back faces, an upper edge, a sole, a heel adjacent to the hosel and a toe opposite the heel. A slot of selected depth is provided across the back, extending diagonally from the upper heel area to the lower toe portion, so as to provide a thin central region and two thicker regions at the intersection of toe and upper edge and at the intersection of heel and sole. The resulting head has a diagonal balance along a line extending along the major axis of the normal elliptical pattern of ball impacts against the striking face, which results in a larger and more desirably oriented "sweet spot".
Abstract: An apparatus for fitting golf club length and head-to-shaft angle to an individual person. The fitting club shaft is in two telescoping portions. A conventional grip is provided at the end of the first portion and the end of the second portion is pivotally connected to a conventional club head. A generally "L"shaped electrically insulating panel has one leg extending into the second shaft portion and the other leg extending into a cavity in the head. A first series of longitudinally spaced electrical contacts on the first end are adapted to be contacted by a connection contact on the movable first shaft portion to send an electrical signal indicating club length. A second series of spaced electrical contacts are radially arranged on the second leg about the shaft pivot point. The second series of contacts is adapted to be contacted by a second connection contact to send an electrical signal indicating head-to-shaft angle. A person grasps the fitting club grip and assumes a normal golf stance.
Abstract: A golf club having a mechanism permitting adjustment of the shaft angle relative to the club head. Fixed stops limit the range of angular adjustment. The body of the club head has a central opening extending to the sole of the club. The opening is closed by a sole plate that requires a special tool for removal and reinstallation. A serrated surface secured to an extension of the club shaft within the opening mates with a corresponding serrated surface secured to the club head. The angle of the shaft relative to the head is locked by installing the sole plate which forces the two serrated surfaces together. In order to change the shaft-to-head angle, the sole plate must be loosened sufficiently to permit the cooperating serrations to disengage and be moved relative to each other.
Type:
Grant
Filed:
March 7, 1994
Date of Patent:
January 3, 1995
Assignee:
Plop Golf Company
Inventors:
Richard H. Hannon, Jacob H. Schmidt, Jr.
Abstract: A golf club with a shaft angularly adjustable relative to the head through selected angles. A special tool must be used to allow any angular adjustments between shaft and head. A structural stop limits the maximum and minimum angles of adjustment between the head and shaft.
Type:
Grant
Filed:
April 19, 1993
Date of Patent:
March 8, 1994
Assignee:
Plop Golf Company
Inventors:
Jacob H. Schmidt, Jr., Richard H. Hannon