Measuring and testing – Center of gravity; turning moment; metacentric height – Ball driving sporting implement
Patent
1990-11-06
1993-07-20
Goldstein, Herbert
Measuring and testing
Center of gravity; turning moment; metacentric height
Ball driving sporting implement
A63B 5300
Patent
active
052283321
ABSTRACT:
A method of manufacturing a golf putter with a true balance includes the steps of designing or selecting a particular shape and style of putter head and then providing a putter shaft with a substantially straight handle portion and a substantially straight neck portion which are integral with each other and arranged so as to define an included angle therebetween. With the putter and shaft defined, the front-to-rear and end-to-end center of gravity cutting planes are accurately determined as well as their line intersection. The point of attachment for the shaft to the head is then determined so that the longitudinal axis of the handle portion of the shaft passes through the line intersection of the two center of gravity cutting planes. Once the shaft is joined to the head with a slow-setting adhesive, the putter is set on a very flat and level test bed in order to test to see if there is any turning or rotation. If there is some slight turning or rotation of the putter head, a fine adjustment is made by rotating the shaft relative to the head until a true balance is achieved as determined by the test bed.
REFERENCES:
patent: 3497220 (1970-02-01), Scott
patent: 4163554 (1979-08-01), Bernhardt
patent: 4828266 (1989-05-01), Tunstall
patent: 4866979 (1989-09-01), Bernhardt
Catalog page-publication unknown, from Tommy Armour Golf, date and page number unknown.
Dougherty Elizabeth L.
Goldstein Herbert
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