US3975722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective alarm system
Assignee: Individual
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Filing: 1975-02-03
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Granted: 1976-08-17
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Expires: 1995-02-03
Abstract
Abstract A vibration sensitive electrical alarm system comprising an electrically conductive pendulum means swingably suspended from an axle member, a pendent body pivotally attached to said axle and having an electrically conductive projection secured to it extending in the direction of said pendulum means, the arrangement being such that when the pendulum means is set into motion, it is adapted to touch said projection whereby an alarm is activated.
Inventors
- 👤 Shaul Adler
- 👤 Dani Adler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:24
CPC Classifications
B; B60; B60R; B60R25/00; B60R25/10; B60R25/1004; B60R25/1006; B62; B62H; B62H5/00; B62H5/20; G; G08; G08B; G08B13/00; G08B13/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
151 words
A vibration sensitive electrical alarm system comprising an electrical conductive pendulum means swingably suspended from an axle member, a pendent body pivotally attached to said axle and having an electrically conductive projection secured to it extending in the direction of said pendulum means, said pendent being provided with adjustable biasing means adapted to vary its distance from said pendulum when the pendulum is at rest, wherein said biasing means is a screw adapted to turn in a thread provided in the pendent in a plane substantially normal to the longitudinal axis of the pendent and thereby to shift the weight of the pendent to overcome the force of gravity acting upon it and in turn to bias it toward one side relative the freely suspended pendulum, the arrangement being such that when the pendulum means is set into motion, it is adapted to touch said projection whereby an alarm is activated.
Claim 2
Dependent Claim
151 words
A vibration sensitive electrical alarm system comprising an electrical conductive pendulum means swingably suspended from an axle member, a pendent body pivotally attached to said axle and having an electrically conductive projection secured to it extending in the direction of said pendulum means, said pendent being provided with adjustable biasing means adapted to vary its distance from said pendulum when the pendulum is at rest, wherein said biasing means is a screw adapted to turn in a thread provided in the pendent in a plane substantially normal to the longitudinal axis of the pendent and thereby to shift the weight of the pendent to overcome the force of gravity acting upon it and in turn to bias it toward one side relative the freely suspended pendulum, the arrangement being such that when the pendulum means is set into motion, it is adapted to touch said projection whereby an alarm is activated.
Claim 3
Dependent Claim
44 words
The system as claimed in claim 1 wherein said axle member is a coaxial plug, the pendulum is suspended from its first end while said pendent is pivotally attached at the coaxial plug's second end and is electrically insulated from said plug's first end.
Claim 4
Dependent Claim
30 words
The system as claimed in claim 1 further comprising a relay in circuit with said pendulum said relay being adapted to activate an alarm whenever the pendulum touches said projection.
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) | 1979-08-17 | 1980-02-16 | 1980-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-17 | 1984-02-16 | 1984-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-17 | 1988-02-16 | 1988-08-17 | $7700.00 | Window Closed / Lapsed |