US3769472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inertia sensor switch
Assignee: TRW Technar Inc
•
Filing: 1972-08-23
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Granted: 1973-10-30
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Expires: 1992-08-23
Abstract
Abstract Inertia switch with mass mounted between inclined structure and, when at rest, contacting spring switch extension means.
Inventors
- 👤 L Bell
- 👤 W Gruber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:16
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/02; H01H35/027
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
154 words
An inertia switch comprising a chamber formed by top, side walls and base having an opening therein, a freely movable mass contained within said chamber and larger in diameter than said opening so as to be removably positioned as a result of inertial force in said opening under rest conditions, said chamber having inclined means for returning said mass to said position in said opening, biased means underlying said opening and mounted on said base for contacting and applying a predetermined force to a portion of said mass extending through said opening when in said opening, said mass moving from its rest position only on overcoming the combination of force thereon as a result of gravity, the incline and said bias, said biased means moving as a result of said contact in a direction against its bias, and switch means operatively associated with said biased means for contact therewith on movement in said direction.
Claim 2
Dependent Claim
154 words
An inertia switch comprising a chamber formed by top, side walls and base having an opening therein, a freely movable mass contained within said chamber and larger in diameter than said opening so as to be removably positioned as a result of inertial force in said opening under rest conditions, said chamber having inclined means for returning said mass to said position in said opening, biased means underlying said opening and mounted on said base for contacting and applying a predetermined force to a portion of said mass extending through said opening when in said opening, said mass moving from its rest position only on overcoming the combination of force thereon as a result of gravity, the incline and said bias, said biased means moving as a result of said contact in a direction against its bias, and switch means operatively associated with said biased means for contact therewith on movement in said direction.
Claim 3
Dependent Claim
19 words
An inertia switch as claimed in claim 1, said freely movable mass being in the shape of a sphere.
Claim 4
Dependent Claim
17 words
An inertia switch as claimed in claim 1, said freely movable mass being substantially cylindrical in shape.
Claim 5
Dependent Claim
20 words
An inertia switch as claimed in claim 3, said freely movable mass having at one end thereof a conical tip.
Claim 6
Dependent Claim
55 words
An inertia switch as claimed in claim 4, said chamber of such dimension that when said freely movable mass moves away from said position in said opening, the conical surface contacts the top of said chamber and thus maintains said mass in a position for re-entry into said opening on the resumption of rest condition.
Claim 7
Dependent Claim
25 words
An inertia switch as claimed in claim 1, said biased meaNs consisting of a spring extending from said switch means and extending into said opening.
Claim 8
Dependent Claim
34 words
An inertia switch as claimed in claim 1, further comprising stop means on said base for limiting movement of said switch and said biased means operatively associated therewith in a direction toward the opening.
Claim 9
Dependent Claim
24 words
An inertia switch as claimed in claim 7, said biased means and said switch means located below the base and external to the chamber.
References Cited (Backward Citations)
US1044228A
Cited
US1662979A
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US3466045A
Cited
US3457382A
Cited
US3484571A
Cited
US3644921A
Cited
US3723680A
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 |