Adjustable height shock absorbing bicycle seat mounting post assembly
First Claim
1. A shock absorbing bicycle seat mounting post assembly for placement within a tube of a bicycle frame and for supporting a bicycle seat thereon, said mounting post assembly comprising:
- an elongated shaft having an upper portion and lower portion, at least an upper portion of said shaft having a geometrical cross section which is noncircular;
a bicycle seat mounting means fixed on said upper portion of said shaft upon which a bicycle seat can be mounted;
a tubular member slidably received about said shaft and along a length of said lower portion of said shaft, said tubular member fitting into and fixed in said bicycle frame tube;
means preventing rotation between said shaft and said tubular member;
resilient shock absorbing means acting between said seat mounting means and said tubular member for resiliently urging said tubular member away from said seat mounting means, thereby moving the seat to a raised position; and
a seat height adjustment means comprising means for adjustably positioning and fixing said shaft relative to said tubular member against the urging force of said resilient means to establish a lowered position of the seat, said seat height adjustment means being operative to release said fixed relationship between said shaft and said tubular member effective to thereby position the seat back to said raised position, said seat height adjustment means including a collar encompassing said shaft and having an inner surface cross section complementary to the geometrical cross section of said shaft.
1 Assignment
0 Petitions
Accused Products
Abstract
A shock absorbing bicycle seat mounting post assembly is mounted in a hollow tubular socket member, by means of a binder clamp, in the frame of a bicycle. The shock absorber includes a compression spring which will effectively absorb shocks which are carried through the frame when the wheels encounter obstacles and holes when traveling along the ground. The bicycle seat mounting post assembly includes a number of shims which will adapt the post assembly to varying sizes of bicycle frames. A bellows is provided to keep dirt and dust out of the spring area and protect skin and fingers from being pinched. Stabilization is enhanced by the provision of a piston at the lower end of the movable shaft upon which the seat is attached. A variable volume reducing device may be positioned below the seat mounting post to adjust the volume of air trapped below the piston. A seat height adjustment means operates to fix the seat relative to the bicycle frame at a lowered position or to release the fixed relationship between the seat and bicycle frame to permit the mounting post assembly to raise the seat and reestablish a shock absorbing function.
132 Citations
19 Claims
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1. A shock absorbing bicycle seat mounting post assembly for placement within a tube of a bicycle frame and for supporting a bicycle seat thereon, said mounting post assembly comprising:
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an elongated shaft having an upper portion and lower portion, at least an upper portion of said shaft having a geometrical cross section which is noncircular; a bicycle seat mounting means fixed on said upper portion of said shaft upon which a bicycle seat can be mounted; a tubular member slidably received about said shaft and along a length of said lower portion of said shaft, said tubular member fitting into and fixed in said bicycle frame tube; means preventing rotation between said shaft and said tubular member; resilient shock absorbing means acting between said seat mounting means and said tubular member for resiliently urging said tubular member away from said seat mounting means, thereby moving the seat to a raised position; and a seat height adjustment means comprising means for adjustably positioning and fixing said shaft relative to said tubular member against the urging force of said resilient means to establish a lowered position of the seat, said seat height adjustment means being operative to release said fixed relationship between said shaft and said tubular member effective to thereby position the seat back to said raised position, said seat height adjustment means including a collar encompassing said shaft and having an inner surface cross section complementary to the geometrical cross section of said shaft. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A shock absorbing bicycle seat mounting post assembly for mounting in a hollow tubular socket member in the frame of a bicycle, said assembly comprising:
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shock absorber means for absorbing shocks which are carried through the frame when the wheels encounter obstacles and holes when traveling along the ground, said shock absorbing means including resilient means for resiliently urging said shaft and seat to rise relative to the frame; and seat height adjustment means comprising means for fixing said shaft and seat relative to the bicycle frame at a lowered position, against the urging by said resilient means to defeat the functioning of said shock absorber means, and for releasing the fixed relationship between said shaft and seat relative to the bicycle frame to permit the resilient means to raise shaft and seat and reestablish a shock absorbing function, said seat height adjustment means including a collar encompassing said shaft, said collar and said shaft comprising means for preventing rotation of said collar with respect to said shaft. - View Dependent Claims (19)
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Specification