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US 5,957,473 AGranted
Rear suspension bicycle
AssigneeSchwinn Cycling & Fitness Inc.
InventorMert Lawwill
Life of this patent
Estimating the term…
Abstract
A suspension bicycle includes swing arms, control arms and control links which are connected pivotably to an otherwise rigid frame to form a trapezoidal arrangement configured with a shock absorber forward of the seat riser tube to permit absorption of energy imparted to the bicycle by substantially vertical forces such as caused by shocks while transmitting to the rear wheels without significant loss energy imparted to the bicycle by substantially forward such as pedaling.
Claims14
A suspension bicycle having
- a rear wheel with a hub,
- a frame including a seat riser tube, a down tube and a bottom bracket housing having left and right sides,
- a pair of control links, one for either side of the rear wheel, each having an attachment point for attaching to the hub of the rear wheel, a first pivot point located above the attachment point and a second pivot point located below the attachment point,
- a swing arm assembly having a pair of forward pivot points and a pair of rear pivot points, the pair of forward pivot points adapted to pivotably connect to the frame at or near the bottom of the seat riser tube, the pair of rear pivot points each pivotably connected to the second pivot point of the respective one of the pair of control links,
- a control arm assembly having at least one front pivot point and a pair of back pivot points, the at least one front pivot point pivotably connected to an upper pivot point on the seat riser tube and the pair of back pivot points each pivotably connected to the first pivot point of the respective one of the pair of control links, and
- a shock absorber situated forward of the seat riser tube and connected between the control arm assembly and the down tube which compresses and extends to absorb shocks.
3 more elements
A suspension bicycle having:
- a rear wheel with a hub,
- a frame including a seat riser tube, a down tube, and a bottom bracket housing;
- a rear suspension system movable between a compressed and uncompressed position, including:
- a pair of control links, one for either side of the rear wheel, each having an attachment point for attaching to the hub of the rear wheel, a first pivot point located above the attachment point and a second pivot point located below and forwardly of the attachment point when the suspension system is in the compressed position;
- a swing arm assembly having a forward pivot point and a pair of rear pivot points, the forward pivot point adapted to pivotably connect to the frame at or near the bottom of the seat riser tube, the pair of rear pivot points each pivotably connected to the second pivot point of the respective one of the pair of control links;
- a control arm assembly having a front pivot point and a pair of back pivot points, the front pivot point pivotably connected to an upper pivot point on the seat riser tube and the pair of back pivot points each pivotably connected to the first pivot point of the respective one of the pair of control links;
- and
- a pull-shock shock absorber connected between the control arm assembly and the frame which is actuated when the suspension is in the compressed position.
5 more elements
A suspension bicycle comprising:
- a rear wheel with a hub;
- a frame including a seat riser tube, a down tube, and a bottom bracket housing,
- a rear suspension system movable between a compressed and uncompressed position, including:
- a pair of control links, one for either side of the rear wheel, each having an attachment point for attaching to the hub of the rear wheel, a first pivot point located above the attachment point and a second pivot point located below the attachment point when the suspension system is in the compressed position;
- a swing arm assembly having a forward pivot point and a pair of rear pivot points, the forward pivot point adapted to pivotably connect to the frame at or near the bottom of the seat riser tube, the pair of rear pivot points each pivotably connected to the second pivot point of the respective one of the pair of control links;
- a control arm assembly having a front pivot point and a pair of back pivot points, the front pivot point pivotably connected to an upper pivot point on the seat riser tube and the pair of back pivot points each pivotably connected to the first pivot point of the respective one of the pair of control links;
- and
- a shock absorber connected between the control arm assembly and the down tube which is actuated when the suspension is in the compressed position.
5 more elements
A suspension bicycle having:
- a rear wheel with a hub;
- a frame including a seat riser tube, a down tube, and a bottom bracket housing;
- a rear suspension system movable between a compressed and uncompressed position, including:
- a pair of control links, one for either side of the rear wheel, each having an attachment point for attaching to the hub of the rear wheel, a first pivot point located above the attachment point and a second pivot point located below the attachment point when the suspension system is in the uncompressed position;
- a swing arm assembly having a forward pivot point and a pair of rear pivot points, the forward pivot point adapted to pivotably connect to the frame at or near the bottom of the seat riser tube, the pair of rear pivot points each pivotably connected to the second pivot point of the respective one of the pair of control links;
- a control arm assembly having a front pivot point and a pair of back pivot points, the front pivot point pivotably connected to an upper pivot point on the seat riser tube and the pair of back pivot points each pivotably connected to the first pivot point of the respective one of the pair of control links;
- and
- a pull-shock shock absorber connected between the control arm assembly and the frame which actuates to absorb shocks.
5 more elements
Dependencies are inferred from the claim text.