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Primary Examiner: Browne, William R.
Assistant Examiner:
Attorney: Klarquist, Sparkman, Campbell, Leigh, Hall & Whinston

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Title: Coacting wheel ball projecting device

Abstract: A baseball pitching machine includes a pair of adjacent ball engaging wheels each provided with a groove or concave surface formed in a body of an elastomeric material. As the baseball is received between the grooved wheels, the groove edges are laterally distorted, since the edges are unrestrained, to grip the baseball securely on opposite sides thereof and pitch the baseball in an accurately predetermined direction.


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Inventors: Smith, Tommy L. (Aurora, OR, US)

Application Number: 850472
Filing Date: 1977-11-11
Publication_date: 1980-04-15
Assignee:
Primary Class(es): 124/78 124/81
Other Classes:
US Patent Ref:
1204468Nov, 1916Marty273/26.
2316798Apr, 1943Luebbe124/78.
2448756Sep, 1948Agens273/DIG.
2729206Jan, 1956Wilson124/78.
2918915Dec, 1959Doeg124/78.
3459168Aug, 1969Bruce124/78.
3538900Nov, 1970Samuels124/78.
3604409Sep, 1971Doeg124/78.
3724437Apr, 1973Halstead124/78.
3734075May, 1973Staples124/78.
3762707Oct, 1973Santorelli273/DIG.
3777732Dec, 1973Holloway et al.124/78.
3785358Jan, 1974D'Angelo et al.124/78.
3794011Feb, 1974Newgarden124/78.
3815567Jun, 1974Serra124/78.
3913552Oct, 1975Yarur et al.124/78.
3976295Aug, 1976Heald273/DIG.

Other Refs: Other References: "LD-167 A Liquid Urethane Elastomer Yielding Very Hard Vulcanizates"--Development Products Report No. 12 Oct. 1958 E. I. Du Pont de Nemours & Co. (Inc.). Wilmington 98, Del. _