US3879054A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for tightening of a belt forming part of a safety harness assembly for vehicles
Assignee: Individual
•
Filing: 1973-01-23
•
Granted: 1975-04-22
•
Expires: 1993-01-23
Abstract
Abstract A device for automatically tightening a seat belt, which is loosely worn under a normal condition, in response to a sudden deceleration of a vehicle.
Inventors
- 👤 Oskar Lenhart Lindblad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:46
CPC Classifications
F; F16; F16F; F16F7/00; F16F7/12; F16F7/123; B; B60; B60R; B60R22/00; B60R22/18; B60R22/195; B60R22/1954; B60R22/1955; B60R22/1956; B60R22/28; B60R22/34; B60R22/46; B60R22/4628; B60R2022/4657; B60R2022/4685
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
209 words
A device for the tightening of a belt forming part of a safety harness assembly of a safety belt for vehicles in case of abnormal changes of speed of the vehicle, as for example during a collision comprising a safety belt part, a sensor means capable of sensing said abnormal speed changes and giving off a gaseous pressure pulse in its activated condition, a power means capable of being driven by said gaseous pressure pulse and in its activated condition capable of giving at least one portion of said belt part a movement in a sidewards direction relative to the normal extension of said belt part thus forming at least one sidewards direction loop, said sensor means including a body of inertia which can move between a position locking said sensor means and a position in which said sensor means is released, a bar supporting said body of inertia, said bar being of a brittle material arranged in unbroken condition keeping said power means in an idle condition and by its breakage, caused by the tendency of said body of inertia to continue its movement at unchanged speed such as at an unnormal braking of the vehicle, releases said sensor means which in its turn activates said power means.
Claim 2
Independent Claim
209 words
A device for the tightening of a belt forming part of a safety harness assembly of a safety belt for vehicles in case of abnormal changes of speed of the vehicle, as for example during a collision comprising a safety belt part, a sensor means capable of sensing said abnormal speed changes and giving off a gaseous pressure pulse in its activated condition, a power means capable of being driven by said gaseous pressure pulse and in its activated condition capable of giving at least one portion of said belt part a movement in a sidewards direction relative to the normal extension of said belt part thus forming at least one sidewards direction loop, said sensor means including a body of inertia which can move between a position locking said sensor means and a position in which said sensor means is released, a bar supporting said body of inertia, said bar being of a brittle material arranged in unbroken condition keeping said power means in an idle condition and by its breakage, caused by the tendency of said body of inertia to continue its movement at unchanged speed such as at an unnormal braking of the vehicle, releases said sensor means which in its turn activates said power means.
Claim 3
Independent Claim
209 words
A device for the tightening of a belt forming part of a safety harness assembly of a safety belt for vehicles in case of abnormal changes of speed of the vehicle, as for example during a collision comprising a safety belt part, a sensor means capable of sensing said abnormal speed changes and giving off a gaseous pressure pulse in its activated condition, a power means capable of being driven by said gaseous pressure pulse and in its activated condition capable of giving at least one portion of said belt part a movement in a sidewards direction relative to the normal extension of said belt part thus forming at least one sidewards direction loop, said sensor means including a body of inertia which can move between a position locking said sensor means and a position in which said sensor means is released, a bar supporting said body of inertia, said bar being of a brittle material arranged in unbroken condition keeping said power means in an idle condition and by its breakage, caused by the tendency of said body of inertia to continue its movement at unchanged speed such as at an unnormal braking of the vehicle, releases said sensor means which in its turn activates said power means.
Claim 4
Independent Claim
209 words
A device for the tightening of a belt forming part of a safety harness assembly of a safety belt for vehicles in case of abnormal changes of speed of the vehicle, as for example during a collision comprising a safety belt part, a sensor means capable of sensing said abnormal speed changes and giving off a gaseous pressure pulse in its activated condition, a power means capable of being driven by said gaseous pressure pulse and in its activated condition capable of giving at least one portion of said belt part a movement in a sidewards direction relative to the normal extension of said belt part thus forming at least one sidewards direction loop, said sensor means including a body of inertia which can move between a position locking said sensor means and a position in which said sensor means is released, a bar supporting said body of inertia, said bar being of a brittle material arranged in unbroken condition keeping said power means in an idle condition and by its breakage, caused by the tendency of said body of inertia to continue its movement at unchanged speed such as at an unnormal braking of the vehicle, releases said sensor means which in its turn activates said power means.
Claim 5
Dependent Claim
48 words
Device according to claim 1, wherein said sensor means includes a striking pin, a spring biasing said striking pin, which striking pin is arranged at its release to strike against a fuse of an explosive charge positioned for being exploded by said pin to produce said gaseous pressure.
Claim 6
Dependent Claim
49 words
Device according to claim 2, wherein said power means comprises a cylinder chamber and a piston movable therein with a piston rod which is arranged to carry along said belt part during the movement of said piston in the expansion chamber, whereby said belt forming a loop is tensioned.
References Cited (Backward Citations)
US3601081A
Cited
US3727575A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-21 | 1978-10-21 | 1979-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-21 | 1982-10-21 | 1983-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-21 | 1986-10-21 | 1987-04-22 | $7700.00 | Window Closed / Lapsed |