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

Golf putter with alignment means

Patent 5052690 Issued on October 1, 1991. Estimated Expiration Date: Icon_subject January 29, 2011. 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

2463798

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2898109

3042409

3118678

3170698

3198525

3273891

3292928

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Inventor

Application

No. 647705 filed on 01/29/1991

US Classes:

473/240Reflective element

Examiners

Primary: Marlo, George J.

International Class

A63B 069/36

Abstract

A golf club alignment device for showing a target area of a golf ball to be impacted by a golf club has a base head with a center mark calibrated to a center line of a securely mounted reflective plate having a mirror quality finish angled back from the corresponding striking surface of the club head, a centering scale, silhouetted at the base portion of the reflective plate, made up of short lines, 0.125 inch spaced increment deviations on either side of the center line in progressive numerical order to allow the golfer to compensate for contours of putting surfaces, a grip reasonably secured to a shaft, of the club head having at a selected distance above the club head to the shaft, a centering standard projecting horizontally forward and parallel to the club head, an alignment mark existing near out board end of the centering standard, calibrated to the center mark of the club head, also calibrated to center line of the reflective plate, in conjunction with the reflection of alignment mark of the centering standard, thus subsequently positioning the corresponding striking surface of club head perpendicular to the reflection of the target or achieving a misaligned putt by using an offset of the centering scale right or left of center line for compensating for contoured putting surfaces of the putt being negotiated.

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