US3965314A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collision detecting switch with rectilinearly movable weight sensors
Assignee: Soken Inc
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Filing: 1974-10-25
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Granted: 1976-06-22
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Expires: 1994-10-25
Abstract
Abstract There is provided a collision detecting system for an occupant protector comprising at least two terminals, a weight, a spring mechanism arranged between the terminals and adapted to function to change on-off state between the two terminals when an acceleration or deceleration caused by a collision exceeds a predetermined value, and biasing means for biasing the weight to contact with the spring mechanism. The collision detecting system of this invention is suited for installation on both large and small vehicles.
Inventors
- 👤 Hideaki Sasaya
- 👤 Akihiro Kobayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:21
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/14
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
185 words
A collision detecting system comprising: a housing; and a switch contained within said housing, said switch including: a weight slidably movable within the housing; a first spring located within the housing and arranged in contacting relationship with said weight to urge the weight to slide in a first direction; a second spring located within said housing and arranged in contacting relationship with said weight to urge the weight to slide in a second direction opposite to said first direction, said second spring exerting a force on said weight less than that exerted on the weight by said first spring; a pair of terminals mounted in spaced relationship in said housing, said terminals having a state of electrical interconnection dependent on the position of said second spring; and means within said housing for restricting expansion of said second spring when the weight is moved in said second direction in response to a force imparted to the weight in excess of a predetermined value whereby contact between the weight and the second spring is interrupted causing the state of electrical interconnection of the terminals to be altered.
Claim 2
Dependent Claim
185 words
A collision detecting system comprising: a housing; and a switch contained within said housing, said switch including: a weight slidably movable within the housing; a first spring located within the housing and arranged in contacting relationship with said weight to urge the weight to slide in a first direction; a second spring located within said housing and arranged in contacting relationship with said weight to urge the weight to slide in a second direction opposite to said first direction, said second spring exerting a force on said weight less than that exerted on the weight by said first spring; a pair of terminals mounted in spaced relationship in said housing, said terminals having a state of electrical interconnection dependent on the position of said second spring; and means within said housing for restricting expansion of said second spring when the weight is moved in said second direction in response to a force imparted to the weight in excess of a predetermined value whereby contact between the weight and the second spring is interrupted causing the state of electrical interconnection of the terminals to be altered.
Claim 3
Dependent Claim
65 words
A collision detecting system according to claim 1, further comprising: a third terminal mounted in said housing in spaced relationship with respect to said pair of terminals; and circuit means including said third terminal and one of said pair of terminals for detecting a fault condition of said switch in response to a state of electrical interconnection between the third terminal and said one terminal.
Claim 4
Dependent Claim
57 words
A collision detecting system according to claim 1, wherein said weight is provided at one end thereof with a projection adapted to partially abut said second spring and wherein said expansion restricting means comprises a stopper within said housing through which said projection extends when the force imparted to said weight is less than said predetermined value.
Claim 5
Dependent Claim
20 words
A collision detecting system according to claim 1, further comprising an additional one of said switches contained within the housing.
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) | 1979-06-22 | 1979-12-22 | 1980-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-22 | 1983-12-22 | 1984-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-22 | 1987-12-22 | 1988-06-22 | $7700.00 | Window Closed / Lapsed |