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Patent US4573697A successfully refreshed from Google Patents.
US4573697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motorcycle
Assignee: Bayerische Motoren Werke AG
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Filing: 1985-03-29
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Granted: 1986-03-04
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Expires: 2005-03-29
Abstract
Abstract A motorcycle in which the forward nose-diving during braking is to be prevented. For that purpose, the motorcycle includes a spring-damping system which acts upon a pressure gas space; the pressure gas space is supplied during the braking operation with compressed gas from a pressure reservoir, by way of a control valve. The pressure which builds up in the gas pressure space thereby acts opposite the nose-diving of the motorcycle.
Inventors
- 👤 Gunther Schier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:25
CPC Classifications
B; B60; B60G; B60G17/00; B60G17/02; B60G17/04; B62; B62K; B62K25/00; B62K25/04; B62K25/06; B62K25/08
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
133 words
A motorcycle comprising a front wheel, a motorcycle frame means, a spring-damping means operatively connecting the front wheel with the motorcycle frame means, a gas pressure space means acted upon by the spring-damping means, a pressure reservoir, and closure means operatively connecting the gas pressure space means with the pressure reservoir during braking of the motorcycle, the closure means being constructed as control valve means having a vent channel for the gas pressure space means and a closure slide valve member displaceable by the deceleration of the motorcycle and operatively connected with the gas pressure space means, said closure slide valve member being operable in its normal position to close the connection from the pressure reservoir to the gas pressure space means and opening up the venting of the gas pressure space means.
Claim 2
Dependent Claim
133 words
A motorcycle comprising a front wheel, a motorcycle frame means, a spring-damping means operatively connecting the front wheel with the motorcycle frame means, a gas pressure space means acted upon by the spring-damping means, a pressure reservoir, and closure means operatively connecting the gas pressure space means with the pressure reservoir during braking of the motorcycle, the closure means being constructed as control valve means having a vent channel for the gas pressure space means and a closure slide valve member displaceable by the deceleration of the motorcycle and operatively connected with the gas pressure space means, said closure slide valve member being operable in its normal position to close the connection from the pressure reservoir to the gas pressure space means and opening up the venting of the gas pressure space means.
Claim 3
Dependent Claim
78 words
A motorcycle according to claim 1, wherein the control valve means includes a valve housing with connections for said pressure reservoir and the venting of the gas pressure space means, said valve housing having an offset through-bore with different diameters in which terminate the connections, the closure slide valve member being constructed as an elongated piston having a stem portion and two external annular collars and being guided in the offset through-bore by means of the two collars.
Claim 4
Dependent Claim
49 words
A motorcycle according to claim 2, wherein said two external annular collars are arranged at a distance from one another, and wherein the closure slide valve member valves with its stem portion the venting connection and with its annular collars the pressure reservoir of the gas pressure space means.
Claim 5
Dependent Claim
22 words
A motorcycle according to claim 3, wherein the closure slide valve member is held in its normal position by a spring force.
Claim 6
Dependent Claim
23 words
A motorcycle according to claim 4, wherein the closure slide valve member is operable to be acted upon by a stoppable inertia mass.
Claim 7
Dependent Claim
27 words
A motorcycle according to claim 5, wherein the inertia mass is displaceably retained in the through-bore of the valve housing coaxially to the closure slide valve member.
Claim 8
Dependent Claim
22 words
A motorcycle according to claim 1, wherein the closure slide valve member is held in its normal position by a spring force.
Claim 9
Dependent Claim
23 words
A motorcycle according to claim 1, wherein the closure slide valve member is operable to be acted upon by a stoppable inertia mass.
Claim 10
Dependent Claim
27 words
A motorcycle according to claim 5, wherein the inertia mass is displaceably retained in the through-bore of the valve housing coaxially to the closure slide valve member.
References Cited (Backward Citations)
US4392664A
Cited
US4524844A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-03-03 | 1989-09-02 | 1990-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-03 | 1993-09-02 | 1994-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-03 | 1997-09-02 | 1998-03-04 | $7700.00 | Window Closed / Lapsed |