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US 4,092,033 AGranted
Skateboard having a flexible and resilient chassis with speed control means
AssigneeMarch Enterprise
InventorStephen C. Swain
Life of this patent
Estimating the term…
Abstract
A skateboard having a flexible and resilient, generally planar chassis to which are affixed front and rear wheel assemblies. The skateboard includes a braking mechanism for controlling the speed of at least one of the wheel assemblies. Engagement and disengagement of the braking mechanism is controlled by and responsive to the amount and direction of the flexing of the skateboard chassis.
Claims21
A skateboard comprising:
- a. a generally planar, flexible and resilient, longitudinal chassis having upper and lower surfaces, a front portion, a central portion and a rear portion;
- b. front wheel means attached to the lower surface of the chassis at the front portion thereof;
- c. rear wheel means attached to the lower surface of the chassis at the rear portion thereof;
- d. brake means for controlling the speed of at least one of said wheel means;
- and,
- e. means responsive to the upward flexing of the central portion of said chassis for controlling the engagement of said brake means.
3 more elements
A skateboard comprising:
- a. a generally planar, flexible and resilient longitudinal chassis having upper and lower surfaces, a front portion, a central portion and a rear portion;
- b. front wheel means comprising a truck assembly attached to the lower surface of the chassis at the front portion thereof and at least one wheel rotatably mounted on said truck assembly;
- c. rear wheel means comprising a truck assembly attached to the lower surface of the chassis at the rear portion thereof and at least one wheel rotatably mounted on such truck assembly;
- d. a brake means for controlling the speed of at least one of said wheel means wheels;
- and,
- e. means responsive to a change in the angular relationship of said front and rear wheel means truck assemblies with respect to a reference plane as a result of the upward flexing of the central portion of the chassis for engaging the brake means and of the
3 more elements
A skateboard comprising:
- a. a generally planar, flexible and resilient longitudinal chassis having upper and lower surfaces, a front portion, a central portion and a rear portion;
- b. front wheel means attached to the lower surface of the chassis at the front portion thereof;
- c. rear wheel means attached to the lower surface of the chassis at the rear portion thereof;
- d. brake means for controlling the speed of at least one of said wheel means;
- and,
- e. means responsive to a change in distance between said front and rear wheel means as a result of the flexing of the chassis for engaging and disengaging said brake means.
3 more elements
A skateboard comprising:
- a. a generally planar flexible and resilient longitudinal chassis having upper and lower surfaces, a front portion, a central portion and a rear portion and which has a first configuration when the central portion is in an unloaded state and a second configuration when it is in a loaded state;
- b. front wheel means attached to the lower surface of the chassis at the front portion thereof;
- c. rear wheel means attached to the lower surface of the chassis at the rear portion thereof;
- d. brake means for controlling the speed of at least one of said wheel means;
- and,
- e. means for engaging said brake means when said central portion of the chassis is in an unloaded state and for disengaging said brake means when said central portion of the chassis is in a loaded state.
3 more elements
A skateboard comprising:
- a. a generally planar, flexible and resilient, longitudinal chassis having upper and lower surfaces, a front portion, a central portion and a rear portion;
- b. front wheel means attached to the lower surface of the chassis at the front portion thereof;
- c. rear wheel means attached to the lower surface of the chassis at the rear portion thereof;
- d. utilization means operable by the flexing of the central portion of said chassis;
- and,
- e. means responsive to the flexing of the central portion of said chassis for operating said utilization means.
3 more elements
A skateboard comprising:
- a. a generally planar, flexible and resilient longitudinal chassis having upper and lower surfaces, a front portion, a central portion and a rear portion;
- b. front wheel means comprising a truck assembly attached to the lower surface of the chassis at the front portion thereof and at least one wheel rotatably mounted on said truck assembly;
- c. rear wheel means comprising a truck assembly attached to the lower surface of the chassis at the rear portion thereof and at least one wheel rotatably mounted on said truck assembly;
- d. utilization means operable by a change in the angular relationship of said front and rear wheel means truck assemblies with respect to a reference plane as a result of the flexing of the central portion of the chassis;
- and,
- e. means responsive to the angular relationship of said front and rear wheel means truck assemblies with respect to a reference plane for operating said utilization means.
3 more elements
A skateboard comprising:
- a. a generally planar, flexible and resilient longitudinal chassis having upper and lower surfaces, a front portion, a central portion and a rear portion;
- b. front wheel means attached to the lower surface of the chassis at the front portion thereof;
- c. rear wheel means attached to the lower surface of the chassis at the rear portion thereof;
- d. utilization means operable by a change in distance between said front and rear wheel means as a result of the flexing of the central portion of the chassis;
- and,
- e. means responsive to a change in distance between said front and rear wheels for operating said utilization means.
3 more elements
A skateboard comprising:
- a. a generally planar, flexible and resilient longitudinal chassis having upper and lower surfaces, a front portion, a central portion and a rear portion;
- b. front wheel means comprising a truck assembly attached to the lower surface of the chassis at the front portion thereof and at least one wheel rotatably mounted on said truck assembly;
- c. rear wheel means comprising a truck assembly attached to the lower surface of the chassis at the rear portion thereof and at least one wheel rotatably mounted on said truck assembly;
- d. utilization means operable by a change in the angular relationship between said front and rear wheel means truck assemblies as a result of the flexing of the central portion of the chassis;
- and,
- e. means responsive to a change in the angular relationship between said front and rear wheel means truck assemblies for operating said utilization means.
3 more elements
Dependencies are inferred from the claim text.