Golf club shaft

Details Golf club shaft Golf club shaft

1991-10-11

1992-10-20

Marlo, George J.

Amusement devices: games

Aerial projectile game; game element or accessory therefor...

Target

273DIG23, 428 361, 428 363, A63B 5310

Patent

active

051563967

ABSTRACT:
A light weight, high strength carbon fiber golf culb shaft includes inner, intermediate and outer tubular layers formed of carbon fiber-reinforced plastic. The intermediate layer is formed of high modulus, high strength carbon fibers having a modulus of 35000 kg/mm.sup.2 or more while the outer layer is formed of high strength carbon fibers having a modulus of 23000-30000 kg/mm.sup.2. Th carbon fibers of the intermediate and outer layers are oriented at an angle in the range of 0 to 15 degrees with respect to the longitudinal axis of the shaft, while the carbon fibers of the inner layer are oriented at an angle of 30 to 80 degrees. The weight ratio of the intermediate layer to the outer layer ranges from 15:85 to 50:50, and the weight of the inner layer is 30-60 % by weight based on the total weight of the three layers. The shaft has a rigidity of 220-240 cycles per minute in terms of frequency and a weight of 63 g or less in the axial length of 1143 mm from the tip end.

REFERENCES:
patent: 2934345 (1960-04-01), Scott
patent: 3646610 (1972-02-01), JAckson
patent: 3896858 (1975-07-01), Whatley
patent: 3998458 (1976-12-01), Inoue et al.
patent: 4000896 (1977-01-01), Lauraitis
patent: 4023801 (1977-05-01), Van Auken
patent: 4043074 (1977-08-01), Airhart
patent: 4084819 (1978-04-01), Van Auken
patent: 4097626 (1978-06-01), Tennent
patent: 4131701 (1978-12-01), Van Auken
patent: 4132579 (1979-01-01), Van Auken
patent: 4135035 (1979-01-01), Branen
patent: 4157181 (1979-06-01), Cecka
patent: 4214932 (1980-07-01), Van Auken
patent: 4319750 (1982-03-01), Roy
patent: 4404053 (1983-09-01), Saffire
patent: 4555112 (1985-11-01), Masghati
patent: 4591155 (1986-05-01), Adachi
patent: 4657795 (1987-04-01), Foret
patent: 4905734 (1990-03-01), Ito
patent: 5028464 (1991-07-01), Shigetoh
patent: 5049422 (1991-09-01), Honma
patent: 5071687 (1991-12-01), Shigetoh
patent: 5088735 (1992-02-01), Shigetoh
patent: 5093162 (1992-03-01), Fenton et al.

Affiliated with

Also associated with

Rating

Golf club shaft does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Golf club shaft, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Golf club shaft will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-188215