Robert L Staka

US Patent:

54998123, Mar 19, 1996

Filed:

Jun 22, 1994

Appl. No.:

8/263821

Inventors:

Robert L. Staka - Watsonville CA
Steven P. Bokariza - Watsonville CA

International Classification:

A63B 6940

US Classification:

273 26E

Abstract:

A cam arm apparatus for exercise training and monitoring devices having a base plate secured to a pair of angle plates. A cam is operably secured to the base plate and a cam follower arm which is pivotally linked to a shaft element operably secured to an adjustment knob. An arm element may be secured to the cam for holding and positioning a ball, weight, or other training, sport, or exercise devices. A spindle shaft is linked to the cam and mounted on the angle plates so that the arm element is automatically returned to an initial starting point regardless of the angular positioning of the base plate or the amount of movement of the arm element around the cam, thereby allowing the return of the arm element against gravity to said initial starting point even if the base plate is angularly positioned.

US Patent:

52382516, Aug 24, 1993

Filed:

Oct 16, 1992

Appl. No.:

7/962126

Inventors:

Robert L. Staka - Watsonville CA

International Classification:

A69B 6900

US Classification:

273411

Abstract:

A volleyball training and monitoring apparatus comprising a base and an upright support member connected to the base and extending upward from the base. The upright support member has an inner member slideably secured therein and extendably adjustable by a handle secured to a notched element operably engaged to a gear housing a sprocket engaged with the inner upright member. A volleyball is supported and positioned by an arm secured to a cam and cam follower assembly mounted on the upright member which provides instant feedback to the user if a correct hit or incorrect hit of the volleyball is made by allowing rotation of the arm if a correct hit is made, while limiting arm movement if an incorrect hit is made. An angle adjustment apparatus is secured to the upright support member and to the arm. The angle adjustment apparatus includes a positioning plate having angle markings thereon and an angle locating disk including a plurality of spaced detents for positioning and alignment of the disk with the angle marking on the positioning plate allowing control of the angle at which the arm and volleyball are positioned.