John Lee Beintema, 7210531 Maryland Cir S, Minneapolis, MN 55438
John Beintema Phones & Addresses
10531 Maryland Cir S, Bloomington, MN 55438 952-8297790
10531 Maryland Ave, Bloomington, MN 55438 952-8297790
Minneapolis, MN
10531 Maryland Cir S, Minneapolis, MN 55438
Work
Position:
Machine Operators, Assemblers, and Inspectors Occupations
Mentions for John Lee Beintema
Publications & IP owners
Us Patents
Hitting Practice Device
US Patent:
5803836, Sep 8, 1998
Filed:
Oct 25, 1996
Appl. No.:
8/740296
Inventors:
John L. Beintema - Bloomington MN
International Classification:
A63B 6900
US Classification:
473429
Abstract:
A device for practicing hitting a ball is disclosed. The device comprises a support arm. A ball is suspended from the support arm such that the ball swings generally vertically in a substantially upright plane of rotation when the ball is struck substantially squarely. A selectively adjustable mechanism provides for a plurality of different, substantially upright rotational planes in which the ball can swing on the support arm when the ball is struck squarely, to thereby permit practice of different hitting skills depending upon which vertical rotational plane has been selected.
Tethered Ball Batting Practice Device
US Patent:
5000450, Mar 19, 1991
Filed:
Apr 30, 1990
Appl. No.:
7/516306
Inventors:
John L. Beintema - Bloomington MN
International Classification:
A63B 6900
US Classification:
273 26E
Abstract:
A batting practice device which comprises an elongated support arm having fastening means at one end for securing the support arm to the side of a post. The fastening means includes an elongated chain which may be wrapped around the post and has one end thereof releasably retained on the support arm against a sliding movement of the chain. The other end of the chain is connected to a bolt which may be drawn through a handle as the handle is rotated to tighten the chain against the post. A ball is suspended from the support arm by an eyelet containing cord to serve as a target for batting practice. A handle which is releasable by hand holds the ball on a reduced diameter stud member at a free end of the support arm.
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