Patent US3869014A successfully refreshed from Google Patents.
US3869014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Starting interlock system
Assignee: Garden Way Inc
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Filing: 1974-02-19
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Granted: 1975-03-04
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Expires: 1994-02-19
Abstract
Abstract A single snap-action, straight arm, interlock switch is pivoted to a vehicle chassis and has its body pivoted between an active position in response to locking the vehicles brakes and an inactive position when the brakes are released. When the switch body is in its active position the switch element is contacted to activate or close the switch only after a power take-off mechanism has been moved to a position which disengages the power take-off at which time the interlock switch is closed thereby partially preparing the engine starting circuit allowing the engine to be started upon closing of a start switch. If either the power take-off lever is in its engaged position or the brakes are released, the single interlock switch will not be closed but will remain in its normal open position thereby preventing starting of the engine by closing the start switch.
Inventors
- 👤 Joseph A Federspiel
- 👤 Edward W Pawlowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:19
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/67; A01D34/68; A01D34/6806; A01D34/6818; A01D75/00; A01D75/20; B; B60; B60K; B60K28/00; B60K28/10; B60T; B60T11/00; B60T11/10; B60T11/103; A01D2101/00; B60K17/00; B60K17/28; B60W; B60W2540/00; B60W2540/12
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
122 words
A starting interlock system for a vehicle powered by an engine which is started by a starter motor in a starting circuit receiving its power from a battery in response to closing a starter switch, the vehicle including wheels driven from the engine through a transmission and brakes for arresting movement of the wheels, the vehicle also including a power take-off mechanism for driving an implement; the improvement which comprises a single interlock switch in said starting circuit having a body and a switching element, and means responsive to movement of the brakes to their locking position and disengagement of said power take-off mechanism for partially completing said starting circuit for permitting starting of the engine upon closing of the starter switch.
Claim 2
Dependent Claim
122 words
A starting interlock system for a vehicle powered by an engine which is started by a starter motor in a starting circuit receiving its power from a battery in response to closing a starter switch, the vehicle including wheels driven from the engine through a transmission and brakes for arresting movement of the wheels, the vehicle also including a power take-off mechanism for driving an implement; the improvement which comprises a single interlock switch in said starting circuit having a body and a switching element, and means responsive to movement of the brakes to their locking position and disengagement of said power take-off mechanism for partially completing said starting circuit for permitting starting of the engine upon closing of the starter switch.
Claim 3
Dependent Claim
68 words
A starting interlock system according to claim 1 wherein said interlock switch includes a body and a switch element mounted on the vehicle and movable in response to locking the brakes from an inactive to an active position, and means responsive to disengagement of said power take-off mechanism for contacting said switch element and closing said interlock switch only when said switch body is in its active position.
Claim 4
Dependent Claim
26 words
A starting interlock system according to claim 2 wherein said switch body is pivoted to said vehicle and is pivoted between its active and inactive position.
Claim 5
Dependent Claim
17 words
A starting interlock system according to claim 1 wherein said interlock switch is a normally open switch.
Claim 6
Dependent Claim
196 words
A starting interlock system for a vehicle powered by an engine which is started by a starter motor in a starting circuit receiving its power from a battery in response to closing a starter switch, the vehicle including wheels driven from the engine through a transmission and having brakes for arresting movement of the vehicle with brake and transmission linkage systems for controlling the brake and transmission, the vehicle also including a power take-off mechanism for driving an implement and a power take-off linkage system for selectively engaging or disengaging the power take-off mechanism; the improvement which comprises a single normally open interlock switch in said starting circuit having a body and a switching element, means for movably mounting the body of the interlock switch to the vehicle, means interconnecting the body of the interlock switch to one of said linkage systems for moving the switch body between an active and an inactive position, and means included in one of the other linkage systems for contacting said switch element and closing said interlock switch only when said switch body is in its active position for allowing starting of the engine upon closing of the starter switch.
Claim 7
Dependent Claim
196 words
A starting interlock system for a vehicle powered by an engine which is started by a starter motor in a starting circuit receiving its power from a battery in response to closing a starter switch, the vehicle including wheels driven from the engine through a transmission and having brakes for arresting movement of the vehicle with brake and transmission linkage systems for controlling the brake and transmission, the vehicle also including a power take-off mechanism for driving an implement and a power take-off linkage system for selectively engaging or disengaging the power take-off mechanism; the improvement which comprises a single normally open interlock switch in said starting circuit having a body and a switching element, means for movably mounting the body of the interlock switch to the vehicle, means interconnecting the body of the interlock switch to one of said linkage systems for moving the switch body between an active and an inactive position, and means included in one of the other linkage systems for contacting said switch element and closing said interlock switch only when said switch body is in its active position for allowing starting of the engine upon closing of the starter switch.
Claim 8
Dependent Claim
18 words
A starting interlock system according to claim 5 wherein said one linkage system is the brake linkage system.
Claim 9
Dependent Claim
19 words
A starting interlock system according to claim 5 wherein said other linkage system is the power take-off linkage system.
Claim 10
Dependent Claim
20 words
A starting interlock system according to claim 5 wherein said interconnecting means pivotally connects the switch body to the vehicle.
Claim 11
Dependent Claim
28 words
A starting interlock system according to claim 5 wherein said brake linkage system is effective when moved to its brake locking position to lock said transmission in neutral.
Claim 12
Dependent Claim
27 words
A starting interlock system according to claim 5 wherein said interconnecting means includes a link pivotally connected between the brake linkage system and said interlock switch body.
Claim 13
Dependent Claim
19 words
A starting interlock system according to claim 6 wherein said other linkage system is the power take-off linkage system.
Claim 14
Dependent Claim
18 words
A starting interlock system according to claim 10 wherein said one linkage system is the brake linkage system.
Claim 15
Dependent Claim
19 words
A starting interlock system according to claim 10 wherein said other linkage system is the power take-off linkage system.
Claim 16
Dependent Claim
19 words
A startIng interlock system according to claim 10 wherein said interlock switch body is pivotally connected to the vehicle.
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) | 1978-03-03 | 1978-09-02 | 1979-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-03 | 1982-09-02 | 1983-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-03 | 1986-09-02 | 1987-03-04 | $7700.00 | Window Closed / Lapsed |