Patent US3840265A successfully refreshed from Google Patents.
US3840265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Construction of stabilised platform
Assignee: Centre for Research in Engineering Surface Technology
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Filing: 1972-09-13
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Granted: 1974-10-08
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Expires: 1992-09-13
Abstract
Abstract The platform is mounted for tilting about longitudinal and transverse axes, and a level sensor operates, through an actuator control, to effect operation of an actuator to continually maintain the platform in a horizontally stabilized position. The actuator is further mounted on a vertically extending variable height actuator which, through a motion sensor, maintains the platform at a constant height in space despite movement of the floor of the vehicle on which the platform may be mounted. Thereby a patient riding in an ambulance and lying on the platform is prevented from being subjected to various vibrations resulting from motion of the vehicle.
Inventors
- 👤 J Stirling
- 👤 J Colgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:10
CPC Classifications
A; A61; A61G; A61G3/00; A61G3/006; F; F16; F16F; F16F15/00; F16F15/02; F16F15/023; F16F15/027; F16F15/0275; A61G2203/00; A61G2203/30; A61G2203/36
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
104 words
A stabilised platform for mounting in a vehicle comprising: a base platform; pivot means supporting the base platform so as to allow the base platform to tilt about a longitudinal axis and a horizontal axis; means controlling the tilt of the base platform in response to lateral forces; a vertical variable height actuator supporting the base platform in a vehicle and comprising a double acting force-balanced pneumatic cylinder; a motion sensor operatively connected between the height actuator and the floor of the vehicle; and means causing the height actuator to raise or lower the base platform in opposition to the motion of the floor.
Claim 2
Dependent Claim
104 words
A stabilised platform for mounting in a vehicle comprising: a base platform; pivot means supporting the base platform so as to allow the base platform to tilt about a longitudinal axis and a horizontal axis; means controlling the tilt of the base platform in response to lateral forces; a vertical variable height actuator supporting the base platform in a vehicle and comprising a double acting force-balanced pneumatic cylinder; a motion sensor operatively connected between the height actuator and the floor of the vehicle; and means causing the height actuator to raise or lower the base platform in opposition to the motion of the floor.
Claim 3
Dependent Claim
60 words
A stabilized platform as claimed in claim 1 in which the means controlling the tilt of the base platform about each axis comprises a tilt actuator; a level sensor; and control means operatively connected between the tilt actuator and the level sensor whereby the resultant forces of gravity and lateral forces acts downwards at right angles to the base platform.
Claim 4
Dependent Claim
31 words
A stabilised platform as claimed in claim 2 in which the control means controlling the tilt of the base platform about each axis comprises a double acting force balances pneumatic cylinder.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-07 | 1978-04-08 | 1978-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-07 | 1982-04-08 | 1982-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-07 | 1986-04-08 | 1986-10-08 | $7700.00 | Window Closed / Lapsed |