US3672344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety device for an internal combustion engine
Assignee: BURD L PAUL RICHARD O BARTZ AND ROBERT W GUTENKAUF D/B/A BURD BARTZ AND GUTENKAUF A PARTNERSHIP
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Filing: 1970-09-11
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Granted: 1972-06-27
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Expires: 1990-09-11
Abstract
Abstract A safety device for an internal combustion engine of the type having a gas control valve on the carburetor connected by a suitable linkage to a manually operable throttle control member. A pair of electrical contacts are respectively fixed to the linkage and to the throttle control member. One of the pair of contacts is connected to electrical ground and the other of the pair of contacts is connected to the ignition of the internal combustion engine. A suitable spring normally returns the valve to a closed position when the throttle control member is released. If the linkage should stick with the flow control valve in the open position, when the throttle control member is released, the contacts close to ground the ignition and stop the engine.
Inventors
- 👤 Robert V Albertson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:53
CPC Classifications
F; F02; F02D; F02D17/00; F02D17/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
188 words
A mechanism for stopping an internal combustion engine in the event the throttle control linkage sticks, said engine having a gas flow control valve normally biased to a closed position and comprising: a. a throttle control member movable between first and second positions; b. resilient means urging said throttle control member toward said first position; c. linkage means coupled at one end to said gas flow control valve; d. means coupling the other end of said linkage to said throttle control member for enabling corresponding movement of said valve with movement of said member and simultaneously allowing relative movement between said member and said linkage if said linkage sticks; e. a pair of normally spaced apart electrical contacts, one of said pair being affixed to said member and the other of said pair being connected to said linkage; and f. means connecting one of said pair of contacts to electrical ground and the other of said pair to the ignition of said internal combustion engine whereby said contacts close and ground said ignition if said linkage sticks and said throttle control member is urged toward said first position.
Claim 2
Dependent Claim
188 words
A mechanism for stopping an internal combustion engine in the event the throttle control linkage sticks, said engine having a gas flow control valve normally biased to a closed position and comprising: a. a throttle control member movable between first and second positions; b. resilient means urging said throttle control member toward said first position; c. linkage means coupled at one end to said gas flow control valve; d. means coupling the other end of said linkage to said throttle control member for enabling corresponding movement of said valve with movement of said member and simultaneously allowing relative movement between said member and said linkage if said linkage sticks; e. a pair of normally spaced apart electrical contacts, one of said pair being affixed to said member and the other of said pair being connected to said linkage; and f. means connecting one of said pair of contacts to electrical ground and the other of said pair to the ignition of said internal combustion engine whereby said contacts close and ground said ignition if said linkage sticks and said throttle control member is urged toward said first position.
Claim 3
Dependent Claim
55 words
Apparatus as in claim 1 wherein said linkage includes: a. a coaxial cable having an outer sheath fixedly secured to said engine; and b. a center wire slidably movable within said sheath, one end of said wire being coupled to said gas flow control valve and the other end cooperating with said throttle control member.
Claim 4
Dependent Claim
78 words
Apparatus as in claim 2 wherein said means coupling said linkage to said throttle control member comprises: a. an aperture in said member for receiving said linkage wire, said aperture being of a diameter greater than the diameter of said wire passing through; and b. an enlargement coupled to the end of said wire passing through said aperture to prevent said wire from withdrawing from said aperture and to provide positive coupling between said member and said wire.
Claim 5
Dependent Claim
24 words
Apparatus as in claim 2 wherein said throttle control member comprises: a. a cylindrically shaped twist grip mounted for rotation about a rod member.
Claim 6
Dependent Claim
87 words
Apparatus as in claim 4 wherein said means coupling said linkage to said throttle control member comprises: a. means on said twist grip with an aperture therein through which said linkage wire is adapted to pass, said aperture being of a diameter greater than the diameter of said wire passing there through, and b. an enlargement coupled to the end of said wire passing through said aperture to prevent said wire from withdrawing from said aperture and to provide positive coupling between said member and said wire.
Claim 7
Independent Claim
145 words
A method of stopping an internal combustion engine in the event the throttle control linkage sticks, said engine having a throttle control member biased towards a first position, a gas flow control valve, and a linkage coupling said member and said valve to cause corresponding movement of said valvE with movement of said member, said method comprising the steps of: a. affixing a pair of electrical contacts in a spaced apart relationship to said linkage and said member; b. coupling said linkage to said member to allow relative movement between said linkage and said member if said linkage sticks; and c. connecting one of said pair of contacts to electrical ground and the other of said pair to ignition of said internal combustion engine whereby the bias on said member towards said first position closes said contacts and grounds said ignition if said linkage sticks.
Claim 8
Independent Claim
145 words
A method of stopping an internal combustion engine in the event the throttle control linkage sticks, said engine having a throttle control member biased towards a first position, a gas flow control valve, and a linkage coupling said member and said valve to cause corresponding movement of said valvE with movement of said member, said method comprising the steps of: a. affixing a pair of electrical contacts in a spaced apart relationship to said linkage and said member; b. coupling said linkage to said member to allow relative movement between said linkage and said member if said linkage sticks; and c. connecting one of said pair of contacts to electrical ground and the other of said pair to ignition of said internal combustion engine whereby the bias on said member towards said first position closes said contacts and grounds said ignition if said linkage sticks.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |