US3769476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Switch device for indicating presence of a load on the seat of an automotive vehicle
Assignee: SWF Auto Electric GmbH
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Filing: 1972-04-13
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Granted: 1973-10-30
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Expires: 1992-04-13
Abstract
Abstract The switch device is used with a resilient automotive vehicle seat having a spring suspension, and is in the form of a pull switch having a housing and an actuating member movable relative to the housing. Hooks on the housing and on the actuating member connect the pull switch between two points on a part of the spring suspension which expands when the seating surface of the seat is loaded. Clamps may be provided to secure the hooks against displacement along the spring suspension part.
Inventors
- 👤 H Prohaska
- 👤 D Eberle
- 👤 D Hanselmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:01
CPC Classifications
B; B60; B60N; B60N2/00; B60N2/70; B60N2/7094; B60N2/002; B60N2/0021; B60N2/003; B60N2/0032; B60N2210/00; B60N2210/40; B60R; B60R22/00; B60R22/48; B60R2022/4808; B60R2022/4858
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
106 words
A switch device for indicating the loading of the seating surface of an automobile vehicle seat with a switch fixed on the underside of the seat and which can be actuated dependently of the deflection of the seat suspension and which is attached to two parts of the seat suspension, comprising a switch having a housing, a hook secured to said housing, and adapted to engage one of the seat suspension parts, said switch having an actuating member which is movable to operate said switch and which is hook shaped, said switch hook shaped actuating member being engaged to the other part of the seat suspension.
Claim 2
Dependent Claim
106 words
A switch device for indicating the loading of the seating surface of an automobile vehicle seat with a switch fixed on the underside of the seat and which can be actuated dependently of the deflection of the seat suspension and which is attached to two parts of the seat suspension, comprising a switch having a housing, a hook secured to said housing, and adapted to engage one of the seat suspension parts, said switch having an actuating member which is movable to operate said switch and which is hook shaped, said switch hook shaped actuating member being engaged to the other part of the seat suspension.
Claim 3
Independent Claim
103 words
A device for detecting the loading of a seat, comprising a seat having a substantially horizontally extending spring suspension including a spring loop with spaced apart resilient legs which deflect outwardly upon seat loading, and a switch adapted to be connected to an alarm circuit having a first hook adjacent one end engaged over one of the resilient legs and a second hook forming a switch actuating member adjacent its opposite end which is hooked over the other leg of the spring loop, said second hook actuating member being movable upon deflection of the resilient legs upon seat loading to actuate said switch.
Claim 4
Independent Claim
103 words
A device for detecting the loading of a seat, comprising a seat having a substantially horizontally extending spring suspension including a spring loop with spaced apart resilient legs which deflect outwardly upon seat loading, and a switch adapted to be connected to an alarm circuit having a first hook adjacent one end engaged over one of the resilient legs and a second hook forming a switch actuating member adjacent its opposite end which is hooked over the other leg of the spring loop, said second hook actuating member being movable upon deflection of the resilient legs upon seat loading to actuate said switch.
Claim 5
Dependent Claim
33 words
A device according to claim 2 including a clamping member arranged on each side of said first hook and said second hook for holding the first and second hooks on said resilient legs.
Claim 6
Dependent Claim
18 words
A device according to claim 2 wherein said spring loop is located centrally of said horizontal spring suspension.
Claim 7
Dependent Claim
43 words
A device according to claim 2 wherein said spring suspension comprises a plurality of undulating spring wires forming individual spring loops and wherein adjacent resilient legs extend substantially parallel and said first and second hooks engage around said legs from respective opposite sides.
References Cited (Backward Citations)
US3437993A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |