US3782291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotatable bridge switch for trackless air cushion vehicle
Assignee: Rohr Inc
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Filing: 1972-04-03
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Granted: 1974-01-01
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Expires: 1992-04-03
Abstract
Abstract A bridge switch with a body having a right triangular cross section is positioned between a main guideway and a pair of other guideways for rotation about a canted axis passing through the center of gravity of the body. A pair of guideway sections are provided and the body extending in different directions and each is positioned on one of the right angle sides of the body and carrying a reaction rail. A pair of containers are mounted on the body and a pump and motor arrangement is provided for transferring liquid from one container to the other at will to rotate the body to align each of the guideway sections with the main guideway and one of the other guideways to define a pair of switch positions. Solenoid locking pins are provided for locking and provided for locking and unlocking the body in each of the switch positions. A rotary dash pot connected to the body pivot limits rotational velocity of the body when rotated. Dash pots are utilized for stopping rotation of the body at each of the switch positions.
Inventors
- 👤 R Maison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:24
CPC Classifications
E; E01; E01B; E01B25/00; E01B25/08; E01B25/12
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
68 words
A rotatable bridge switch for vehicles comprising: a body with two sections of guideway extending in different directions, said body being rotatably positioned between a main guideway and a pair of other guideways, said body being rotatable about a vertically canted axis that passes through the center of gravity of the said body with the lower end of the axis pivotally connected to the opposite pair of guideways.
Claim 2
Dependent Claim
68 words
A rotatable bridge switch for vehicles comprising: a body with two sections of guideway extending in different directions, said body being rotatably positioned between a main guideway and a pair of other guideways, said body being rotatable about a vertically canted axis that passes through the center of gravity of the said body with the lower end of the axis pivotally connected to the opposite pair of guideways.
Claim 3
Dependent Claim
16 words
The rotatable bridge switch of claim 1 wherein said body has a right triangular cross section.
Claim 4
Dependent Claim
24 words
The rotatable bridge switch of claim 2 wherein said guideway sections are each positioned on one of the right angle sides of said body.
Claim 5
Dependent Claim
17 words
The rotatable bridge switch of claim 1 wherein each of said guideway section carries a reaction rail.
Claim 6
Dependent Claim
19 words
The rotatable bridge switch of claim 4 wherein one of said reaction rails is curved and the other straight.
Claim 7
Dependent Claim
15 words
The rotatable bridge switch of claim 4 wherein both of said reaction rails are curved.
Claim 8
Dependent Claim
55 words
The rotatable bridge switch of claim 1 further comprising means mounted on said body to provide first a relatively large, constant, then small moment arm for rotating said body at Will to align each of said guideway sections with said main guideway and are of said other guideways to define a pair of switch positions.
Claim 9
Dependent Claim
52 words
The rotatable bridge switch of claim 7 wherein said rotation means comprises a pair of containers mounted on said body, and a pump and motor means connecting said containers for transferring liquid from one to the other of said containers to rotate at will said body to either of said switch positions.
Claim 10
Dependent Claim
31 words
The rotatable bridge switch of claim 7 further comprising means carried by said body and the guideways for locking and unlocking at will said body in each of said switch positions.
Claim 11
Dependent Claim
26 words
The rotatable bridge switch of claim 7 further comprising means carried by said guideways for stopping rotation of said body at each of said switch positions.
Claim 12
Dependent Claim
17 words
The rotatable bridge switch of claim 1 further comprising means for limiting rotational velocity of said body.
Claim 13
Dependent Claim
180 words
A rotatable bridge switch for vehicles comprising: a right triangular cross section body positioned between a main guideway and a pair of branch guideways, for rotation about a vertically canted axis passing through the center of gravity of said body with the lower end of the axis pivotally connected to the main guideway and the elevated end of the axis pivotally connected to the opposite pair of branch guideways; a pair of guideway sections on said body extending in different directions, said guideway sections each being positioned on one of the right angle sides of said body and carrying a reaction rail; means mounted on said body for rotating said body at will to align each of said guideway sections with said main guideway and are of said branch guideways to define a pair of switch positions; means carried by said body and the guideways for locking and unlocking at will said body in each of said switch positions; means for limiting rotational velocity of said body; and means carried by said guideways for stopping rotation of said switch postions.
Claim 14
Dependent Claim
180 words
A rotatable bridge switch for vehicles comprising: a right triangular cross section body positioned between a main guideway and a pair of branch guideways, for rotation about a vertically canted axis passing through the center of gravity of said body with the lower end of the axis pivotally connected to the main guideway and the elevated end of the axis pivotally connected to the opposite pair of branch guideways; a pair of guideway sections on said body extending in different directions, said guideway sections each being positioned on one of the right angle sides of said body and carrying a reaction rail; means mounted on said body for rotating said body at will to align each of said guideway sections with said main guideway and are of said branch guideways to define a pair of switch positions; means carried by said body and the guideways for locking and unlocking at will said body in each of said switch positions; means for limiting rotational velocity of said body; and means carried by said guideways for stopping rotation of said switch postions.
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) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |