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US 4,875,885 AGranted
Engine noise simulating device for a bicycle
OwnerHorton Johnsoninventor
Life of this patent
Estimating the term…
Abstract
A noisemaker for bicycles and the like includes a housing having a shoulder and a resonator plate seated in the housing on the shoulder. The resonator plate is biased against the shoulder by a compressed spring. A resonator chamber extends from the shoulder, away from the housing. Use of a camming mechanism raises the resonator plate above the shoulder and releases same as it passes so that the resonator plate is urged back against the shoulder by the spring and a surface-engaging noise and air compression noise are directed into the resonator chamber to simulate the sound commonly associated with a vehicle engine.
Claims24
A noisemaker for bicycles and the like comprising:
- a housing including a shoulder;
- a resonator plate seated in said housing on said shoulder;
- spring means for resiliently biasing said plate against said shoulder;
- a resonator chamber extending from said shoulder, away from said housing;
- drive and cam means for periodically raising said plate above said shoulder against the resilient bias of said spring means and for releasing said plate for movement back into contact with said shoulder, whereby a surface-engaging noise and air compression noise are directed into said resonator chamber to simulate the sound commonly associated with a vehicle engine, said drive and cam means including a drive shaft rotatably mounted on said housing, a drive wheel fixed to said shaft, and a cam fixed to said shaft and engagable with said plate upon rotation of said shaft.
2 more elements
A noisemaker for bicycles and the like comprising:
- a housing including a shoulder;
- a resonator plate seated in said housing on said shoulder;
- means for biasing said plate against said shoulder;
- a resonator chamber extending from said shoulder, away from said housing;
- means for periodically raising said plate above said shoulder and releasing said plate whereby a surface-engaging noise and air compression noise are directed into said resonator chamber to simulate the sound commonly associated with a vehicle engine, wherein said means for periodically raising said plate above said shoulder and releasing said plate include:
- at least one cam follower positioned along an underside portion of said plate;
- means for both periodically raising said cam follower upward and releasing said cam follower;
- an aperture in said resonator plate;
- a drive shaft extending through said resonator plate aperture;
- means for rotating said drive shaft;
- a cam operatively connected to said drive shaft by a cam shaft;
- and
- said cam being positioned so that upon each rotation of said drive shaft said cam follower is impacted by said cam, thus urging said cam follower upward to provide for said raising, and allowing said cam follower to fall back to engagement with said shoulder as said cam passes the cam follower.
10 more elements
A noisemaker for bicycles and the like, comprising:
- a resonator chamber including a shoulder thereon;
- a resonator plate seated along said shoulder;
- at least one cam follower positioned along an underside portion of said resonator plate;
- means for biasing said resonator plate against said shoulder;
- cam means for periodically pushing said cam follower upward causing said resonator plate to be correspondingly raised above said shoulder and released as said cam passes whereby said resonator plate is urged back into engagement with said shoulder by said biasing means to create a surface engagement noise and an air compression noise which are directed into said resonator chamber to simulate the sound commonly made by an engine and
- wherein said cam means includes:
- an aperture in said resonator plate;
- a drive shaft extending through said resonator plate aperture;
- means for rotating said drive shaft;
- a cam roller operatively connected to said drive shaft by a cam shaft;
- and
- said cam roller being positioned so that upon each rotation of said drive shaft said cam follower is impacted by said cam roller, thus urging said cam follower upward to provide for said raising, and said cam follower is released when not being impacted by said roller.
9 more elements
A noisemaker for bicycles and the like comprising:
- a housing including a shoulder;
- a resonator plate seated in said housing on said shoulder;
- spring compression means for biasing said plate against said shoulder;
- a resonator chamber extending from said shoulder, away from said housing;
- an aperture in said resonator plate;
- a drive shaft extending through said resonator plate aperture;
- means for rotating said drive shaft;
- at least one cam follower positioned along an underside portion of said resonator plate;
- a cam operatively connected to said drive shaft by a cam shaft;
- said cam being positioned so that upon each rotation of said drive shaft said cam follower is impacted by said cam, thus urging said cam follower upward to provide for raising of said resonator plate, and said cam follower is released as said cam passes.
7 more elements
Dependencies are inferred from the claim text.