U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Bowling ball

Patent 4913429 Issued on April 3, 1990. Estimated Expiration Date: Icon_subject September 29, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

531103

2291738

3265392

3386176

3400929

Bowling ball
Patent #: 4121828
Issued on: 10/24/1978
Inventor: Amburgey

Kick ball game
Patent #: 4121829
Issued on: 10/24/1978
Inventor: Petrusek

Bowling ball Patent #: 4320899
Issued on: 03/23/1982
Inventor: Salvino

Inventor

Application

No. 250923 filed on 09/29/1988

US Classes:

473/126With weight block

Examiners

Primary: Marlo, George J.

Attorney, Agent or Firm

International Classes

A63B 037/06
A63B 037/10

Abstract

A bowling bowl having a solid core surrounded by a solid spherical shell. The solid core, which is substantially spherical in configuration, further includes a top weight which is generally conical in configuration and two extending side wings which are generally alike in configuration but placed at different angles with respect to each other. The two side wings which extend outwardly from the solid core have a generally flat surface on one side of the extending wing. The described flat surfaces of each extending wing describe a plane generally perpendicular to each other. The combination of the top weight and two extending side wings give the bowling ball more even and constant revolutions at the time contact with the pins is made. Also, the combination keeps the high rolling track of a high roller off of the thumb and finger holes. Further, the combination also gives the ball an exceptionally positive trajectory, a very thorough impact, less deflection upon impact and a methodical penetration at impact.

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