Abstract: A back supporting device which permits a wearer to sit in an upright position for extended periods of time without discomfort including a flexible padded back support dimensioned to engage and support the lower back of the wearer and straps attached to the end of the pad which are adapted to loop around the knees of the wearer when in a sitting position in order to tension the support against the wearer's back.

Abstract: A putter type golf club including a head, shaft and ball striking face, having its center of mass disposed at least 10 cm. behind the striking face creating an improved effective polar moment of inertia and a "shaft-force axis" disposed at a position relative to the center of mass creating a "self-aligning-stability" force throughout the acceleration portion of the putting stroke, wherein most of the head is made of lightweight material and a heavy weight is disposed in the head at a rearward location, at a substantial distance behind both the club head percussion center and the polar shaft axis.

Abstract: A swim fin adapted to be used in the swimming or walking mode having a foot engaging portion adapted to be worn by a user and a two-part fin formed of an inner portion and outer portion which are connected to each other and rotatable with respect to each other using a suitable hinge assembly so that the outer portion may be folded on top of or under the foot wearing portion to facilitate walking and to enable the outer portion to be extended to facilitate swimming. Suitable locks are provided to maintain the fin portions in the extended or folded positions.

Abstract: A putter type golf club head including a club head body with a ball striking face and a triangular hosel having an upright side, a base at 90 degrees to the upright side and a hypotenuse side. The apex of triangular hosel is connected to a shaft socket and the base is connected to the club head body. The base extends from a point adjacent the ball striking face rearwardly to a second point adjacent the rear of the club head and is in a plane perpendicular to the ball striking face. The club head includes a lower flange extending rearward from the striking face. An upright boss is provided on the flange adjacent the heel and the toe ends of the club.

Abstract: A putter type golf club alignment system wherein a ball to be struck forms an extension of the alignment indicia on the golf club to provide an indication that the putter head is properly aligned with the ball and the intended target line, including a putter club head, having an upper surface, and a ball striking face wherein the upper surface of the club head is provided with a plurality of simulated golf balls aligned in a row perpendicular to the ball striking face, the simulated balls in use forming a straight line row with the ball to be struck when the putter is properly aligned.