US3910134A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carburetor throttle valve safety device
Assignee: Mazda Motor Corp
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Filing: 1973-09-26
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Granted: 1975-10-07
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Expires: 1993-09-26
Abstract
Abstract A safety device for controlling a carburetor throttle valve in a wire type accelerator system which comprises a throttle lever, a main return spring, a spring attaching lever, an auxiliary throttle lever and an auxiliary return spring, in which the auxiliary return spring connected between the spring attaching lever and the auxiliary throttle lever controls the throttle valve positions through a connecting rod in case of a failure of the main return spring.
Inventors
- 👤 Toshimichi Akagi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:01
CPC Classifications
B; B60; B60K; B60K26/00; B60K26/02; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20528; Y10T74/20534
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
224 words
A safety device for controlling a carburetor throttle valve coupled to a throttle shaft, comprising: a throttle lever rigidly fixed to said throttle shaft to rotate integrally therewith; a spring attaching lever rotatably attached to a carburetor body and having a larger projection at one end and a smaller projection at the other end, said larger projection having more weight than said smaller projection in respect of a rotatable center point of said spring attaching lever; a main return spring connected to said larger projection of said spring attaching lever and said throttle lever and giving both an inward tension; an auxiliary throttle lever rotatably attached to said throttle shaft; a bracket with a guide slot rigidly attached to said carbureTor body; a connecting rod having one end rotatably attached to said auxiliary throttle lever, and the other end being bent and placed on an upper edge of said smaller projection of said spring attaching lever and received movably within said guide slot of said bracket; an auxiliary return spring having one end fixed to said bracket and the other end mounted on said bent end of said connecting rod, and giving an inward pull between the two points; and a stopper rigidly attached to said bracket under a lower edge of said larger projection of said spring attaching lever to limit further rotation.
Claim 2
Dependent Claim
224 words
A safety device for controlling a carburetor throttle valve coupled to a throttle shaft, comprising: a throttle lever rigidly fixed to said throttle shaft to rotate integrally therewith; a spring attaching lever rotatably attached to a carburetor body and having a larger projection at one end and a smaller projection at the other end, said larger projection having more weight than said smaller projection in respect of a rotatable center point of said spring attaching lever; a main return spring connected to said larger projection of said spring attaching lever and said throttle lever and giving both an inward tension; an auxiliary throttle lever rotatably attached to said throttle shaft; a bracket with a guide slot rigidly attached to said carbureTor body; a connecting rod having one end rotatably attached to said auxiliary throttle lever, and the other end being bent and placed on an upper edge of said smaller projection of said spring attaching lever and received movably within said guide slot of said bracket; an auxiliary return spring having one end fixed to said bracket and the other end mounted on said bent end of said connecting rod, and giving an inward pull between the two points; and a stopper rigidly attached to said bracket under a lower edge of said larger projection of said spring attaching lever to limit further rotation.
Claim 3
Dependent Claim
157 words
A safety device for controlling a carburetor throttle valve coupled to a throttle shaft, comprising: a throttle lever rigidly fixed to said throttle shaft to rotate integrally therewith; a pair of spring attaching levers rotatably attached to a carburetor body and each having a larger projection at one end and a smaller projection at the other end having dints on an upper edge, said larger projection having more weight than said smaller projection in respect of a rotatable center point of said spring attaching lever; a main return spring connected to said larger projections of said spring attaching levers and said throttle lever and giving both an inward tension; an auxiliary throttle lever rotatably attached to said throttle shaft; a connecting rod having one end rotatably attached to said auxiliary throttle lever, and the other end being hook shaped and placed on a pin mounted on dints formed on said smaller projections of said spring attaching lever;
Claim 4
Dependent Claim
157 words
A safety device for controlling a carburetor throttle valve coupled to a throttle shaft, comprising: a throttle lever rigidly fixed to said throttle shaft to rotate integrally therewith; a pair of spring attaching levers rotatably attached to a carburetor body and each having a larger projection at one end and a smaller projection at the other end having dints on an upper edge, said larger projection having more weight than said smaller projection in respect of a rotatable center point of said spring attaching lever; a main return spring connected to said larger projections of said spring attaching levers and said throttle lever and giving both an inward tension; an auxiliary throttle lever rotatably attached to said throttle shaft; a connecting rod having one end rotatably attached to said auxiliary throttle lever, and the other end being hook shaped and placed on a pin mounted on dints formed on said smaller projections of said spring attaching lever;
Claim 5
Dependent Claim
38 words
A safety device for controlling a carburetor throttle valve as claimed in claim 2, wherein said lower spring shoe is secured to the lower part of said connecting rod by means of a collar and a retaining plate.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |