US3986005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Odometer for an automobile
Assignee: Denso Corp
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Filing: 1974-10-22
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Granted: 1976-10-12
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Expires: 1994-10-22
Abstract
Abstract An odometer for an automobile comprises a drive gear having a couple of projections, a plurality of numbered wheels whose least significant digit wheel has an internal gear, and a cam disposed between the drive gear and the least significant digit wheel, whereby the cam engages with and disengages from the internal gear teeth as the couple of the projections abut against the cam in response to the rotating direction of the drive gear, thus preventing the reversing of the numbered wheels.
Inventors
- 👤 Akira Itoh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:41
CPC Classifications
G; G01; G01C; G01C22/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
213 words
An odometer for an automobile comprising: a drive gear to which wheel rotation is transmitted, a shaft, a plurality of numbered wheels carried rotatably by said shaft for accumulating the running distance of the automobile with the least significant digit wheel having internal gear teeth formed on the inner periphery thereof, wherein the improvement comprises: a cam holder rotatably carried by said shaft and disposed between said least significant digit wheel and said drive gear, and a cam pivotably mounted at a pivot point on said cam holder between said shaft and said internal gear teeth and so formed at one end extending from the pivot point as to mate with said internal gear teeth and cause rotation of said numbered wheels, and wherein said drive gear is provided with a disc plate having at least a pair of projections including a first projection for engaging said cam to pivot said cam in a first direction to cause said one end of said cam to mate with said internal gear teeth when the automobile runs forward, and a second projection for engaging said cam to cause said cam to pivot in a direction opposite to said first direction and disengage said one end from said internal gear teeth when the automobile runs backward.
Claim 2
Dependent Claim
213 words
An odometer for an automobile comprising: a drive gear to which wheel rotation is transmitted, a shaft, a plurality of numbered wheels carried rotatably by said shaft for accumulating the running distance of the automobile with the least significant digit wheel having internal gear teeth formed on the inner periphery thereof, wherein the improvement comprises: a cam holder rotatably carried by said shaft and disposed between said least significant digit wheel and said drive gear, and a cam pivotably mounted at a pivot point on said cam holder between said shaft and said internal gear teeth and so formed at one end extending from the pivot point as to mate with said internal gear teeth and cause rotation of said numbered wheels, and wherein said drive gear is provided with a disc plate having at least a pair of projections including a first projection for engaging said cam to pivot said cam in a first direction to cause said one end of said cam to mate with said internal gear teeth when the automobile runs forward, and a second projection for engaging said cam to cause said cam to pivot in a direction opposite to said first direction and disengage said one end from said internal gear teeth when the automobile runs backward.
Claim 3
Dependent Claim
38 words
An odometer as in claim 1 wherein said cam has a second end extending oppositely from said pivot away from said one end, said second end engaging said second projection and said one end engaging said first projection.
Claim 4
Dependent Claim
137 words
An odometer for an automobile comprising: a drive gear having at least a pair of separated projections for transmitting the wheel rotation of the automobile to the next stage, a shaft, a plurality of numbered wheels carried rotatably by said shaft for accumulating the running distance of the automobile with their least significant digit wheel having a gear teeth, a cam holder rotatably carried by said shaft and disposed between said least significant digit wheel and said drive gear, and a cam pivotably mounted at a pivot point on said cam holder between said shaft and said gear teeth for engaging with and disengaging from said internal gear teeth in response to the urge of one of said projections, whereby said wheel rotation is transmitted to said least significant digit wheel only when the automobile runs forward.
Claim 5
Dependent Claim
137 words
An odometer for an automobile comprising: a drive gear having at least a pair of separated projections for transmitting the wheel rotation of the automobile to the next stage, a shaft, a plurality of numbered wheels carried rotatably by said shaft for accumulating the running distance of the automobile with their least significant digit wheel having a gear teeth, a cam holder rotatably carried by said shaft and disposed between said least significant digit wheel and said drive gear, and a cam pivotably mounted at a pivot point on said cam holder between said shaft and said gear teeth for engaging with and disengaging from said internal gear teeth in response to the urge of one of said projections, whereby said wheel rotation is transmitted to said least significant digit wheel only when the automobile runs forward.
Claim 6
Dependent Claim
130 words
An odometer for an automobile comprising: drive means having at least a couple of projections for transmitting the wheel rotation to the next stage, means having a least significant digit wheel formed at its inner periphery gear teeth and other numbered wheels for accumulating the running distance of the automobile, means disposed between said least significant digit wheel and said drive means for supporting a cam and rotatable about the axis of said accumulating means, a cam rotatably supported by said supporting means and disposed between said projections and eccentrically to said axis for engaging with and disengaging from said gear teeth in response to the urge of one of said projections, whereby said wheel rotation is transmitted to said least significant digit wheel only when the automobile runs forward.
Claim 7
Dependent Claim
130 words
An odometer for an automobile comprising: drive means having at least a couple of projections for transmitting the wheel rotation to the next stage, means having a least significant digit wheel formed at its inner periphery gear teeth and other numbered wheels for accumulating the running distance of the automobile, means disposed between said least significant digit wheel and said drive means for supporting a cam and rotatable about the axis of said accumulating means, a cam rotatably supported by said supporting means and disposed between said projections and eccentrically to said axis for engaging with and disengaging from said gear teeth in response to the urge of one of said projections, whereby said wheel rotation is transmitted to said least significant digit wheel only when the automobile runs forward.
Claim 8
Dependent Claim
109 words
An odometer for an automobile comprising: drive means having at least a couple of spaced apart projections for transmitting the wheel rotation of the automobile numbered wheel means having gear teeth for accumulating the running distance of the automobile, and cam means disposed eccentrically to the axis of said drive means between said wheel means and said drive means and between said projections for engaging with and disengaging from said gear teeth in response to the abutment of one of said projections, whereby the said wheel rotation is transmitted when the automobile runs forward and prevented from being transmitted when the automobile runs backward, to said numbered wheel means.
Claim 9
Dependent Claim
109 words
An odometer for an automobile comprising: drive means having at least a couple of spaced apart projections for transmitting the wheel rotation of the automobile numbered wheel means having gear teeth for accumulating the running distance of the automobile, and cam means disposed eccentrically to the axis of said drive means between said wheel means and said drive means and between said projections for engaging with and disengaging from said gear teeth in response to the abutment of one of said projections, whereby the said wheel rotation is transmitted when the automobile runs forward and prevented from being transmitted when the automobile runs backward, to said numbered wheel means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-10-12 | 1980-04-12 | 1980-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-12 | 1984-04-12 | 1984-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-12 | 1988-04-12 | 1988-10-12 | $7700.00 | Window Closed / Lapsed |