Patent US3905440A successfully refreshed from Google Patents.
US3905440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control device for emergency lock type vehicle safety belt
Assignee: Honda Motor Co Ltd
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Filing: 1974-04-09
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Granted: 1975-09-16
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Expires: 1994-04-09
Abstract
Abstract A belt lock control including a mechanical and an electrical Gsensor switch both connected in series with solenoid means for locking the belt retractor, the electrical G-sensor switch being arranged to operate in advance of the mechanical G-sensor switch. The control is substantially free from any arcing at the switch contacts, requires no unusually large G-sensor weight, and is highly reliable.
Inventors
- 👤 Motohiro Okada
- 👤 Taiji Omori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:57
CPC Classifications
B; B60; B60R; B60R22/00; B60R22/34; B60R22/343; H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/18; H01F7/1844; H01H; H01H35/00; H01H35/14
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
78 words
A control device for an emergency lock type vehicle safety belt, comprising a belt retractor, means operable to lock said belt retractor, a mechanical G-sensor switch, and an electrical G-sensor switch both connected in series with said means to control the same, said second G-sensor switch being so constructed and arranged as to operate in advance of said first G-sensor switch in response to forces applied to said vehicle whereby arcing at the mechanical switch is substantially avoided.
Claim 2
Dependent Claim
78 words
A control device for an emergency lock type vehicle safety belt, comprising a belt retractor, means operable to lock said belt retractor, a mechanical G-sensor switch, and an electrical G-sensor switch both connected in series with said means to control the same, said second G-sensor switch being so constructed and arranged as to operate in advance of said first G-sensor switch in response to forces applied to said vehicle whereby arcing at the mechanical switch is substantially avoided.
Claim 3
Dependent Claim
23 words
A control device as claimed in claim 1 wherein said means is an electromagnetic means operable to prevent movement of said belt retractor.
Claim 4
Dependent Claim
39 words
A control device as claimed in claim 2 wherein said vehicle includes a source of electrical power and an ignition switch coupled thereto, said mechanical and electrical switches being connected in series with said means and said ignition switch.
Claim 5
Dependent Claim
26 words
A control device as claimed in claim 3 comprising a manually operable pushbuttom switch connected across the mechanical and electrical switches for selectively shorting the same.
Claim 6
Dependent Claim
24 words
A control device as claimed in claim 3 wherein said mechanical switch includes contacts and spring loaded weight means adapted to bridge said contacts.
Claim 7
Dependent Claim
29 words
A control device as claimed in claim 5 wherein said contacts are normally open and are closed by said weight means in response to forces applied to said vehicle.
Claim 8
Dependent Claim
28 words
A control device as claimed in claim 5 wherein said contacts are normally closed and are opened by said weight means responding to forces applied to said vehicle.
Claim 9
Dependent Claim
33 words
A control device as claimed in claim 3 comprising means coupling said mechanical switch to said electrical switch and generating a signal in response to said mechanical switch to actuate said electrical switch.
Claim 10
Dependent Claim
24 words
A control device as claimed in claim 3 comprising G-sensitive means separate from the mechanical switch and coupled to and actuating said electrical switch.
Claim 11
Dependent Claim
25 words
A control device as claimed in claim 3 comprising means for directly coupling said mechanical switch to said source and thereby shunting said electrical switch.
Claim 12
Dependent Claim
58 words
A control device as claimed in claim 3 wherein said electrical switch includes a strain gauge, a dummy load connected at a junction to said strain gauge, an amplifier coupled to said junction, delay means coupled to said amplifier, a diode shunting at least part of said delay means, and an electronic switch coupled to said delay means.
Claim 13
Dependent Claim
49 words
A control device as claimed in claim 5 wherein said contacts include two pairs of contacts one of which is in series with said electrical switch and the other of which is in series with the first said means, the pairs of contacts being adapted to cloSe in sequence.
Claim 14
Dependent Claim
32 words
A control device as claimed in claim 3 wherein said electrical switch comprises two intercoupled transistors, contacts, and electromagnetic means coupled to said transistors and adapted to bridge the latter said contacts.
Claim 15
Dependent Claim
69 words
A control device as claimed in claim 12 wherein said mechanical switch includes a casing provided with a receptacle, three leaf springs mounted in staggered parallel relation on said casing, a shouldered actuator pin extending displaceably out of said casing for sequentially engaging the leaf springs, a weight movable in said receptacle, and a spring yieldably restraining movement of said weight, said contacts being mounted on said leaf springs.
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) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |