Bicycle frame

Details Bicycle frame Bicycle frame

1991-12-17

1993-10-19

Hill, Mitchell J.

Land vehicles

Wheeled

Occupant propelled type

B62K 1902

Patent

active

052538907

ABSTRACT:
A bicycle frame includes a top tube provided with bulge-processed regions at its front and rear end portions, formed with bores having axes which intersect a longitudinal axis of the top tube, for accommodating therein the upper end portions of the head tube and the seat tube, respectively. The frame further includes a down tube provided with a bulge-processed region at its front end portion, formed with a bore having an axis which intersects a longitudinal axis of the down tube, for accommodating therein the lower end portion of the head tube, and optionally provided with another bulge-processed region at its rear end portion, formed with a bore having an axis which intersects the longitudinal axis of the down tube, for accommodating therein the lower end portion of the seat tube. The frame has an optimized distribution of effective section modulus in the longitudinal direction of the top and down tubes, to realize a markedly improved rigidity and mechanical strength.

REFERENCES:
patent: 1553824 (1925-09-01), Langenberg
patent: 2353712 (1944-07-01), Dewey
patent: 3350905 (1967-11-01), Ogura et al.
patent: 3889975 (1975-06-01), Falgoni
patent: 4293141 (1981-10-01), Brilando
patent: 4437679 (1984-03-01), Campagnolo
patent: 4484756 (1984-11-01), Takamiya et al.
patent: 4541648 (1985-09-01), Takamiya et al.
patent: 4840053 (1989-06-01), Nakamura
patent: 4902160 (1990-02-01), Jeng

Affiliated with

Also associated with

Rating

Bicycle frame does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1347065