US4149222A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bed light safety apparatus
Assignee: VISTA LIGHTING Corp
•
Filing: 1977-03-30
•
Granted: 1979-04-10
•
Expires: 1997-03-30
Abstract
Abstract A bed light safety apparatus which includes a normally wall mounted lighting fixture. The upper rearward edge of the fixture is pivotally mounted to a plate adapted for attachment to a wall. One embodiment of the apparatus includes a switch carried by the fixture. When used in conjunction with a hospital bed or the like which is power operated to a raised position, the switch is made a part of the electrical circuit for the bed drive means. In the event equipment carried by the bed strikes the fixture on raising of the bed, the consequent pivotal movement of the fixture causes the switch to open the circuit to the bed drive means and halt further raising of the bed. In other embodiments the safety apparatus may include visual or auditory alarms actuable by a switch in the fixture.
Inventors
- 👤 Harry T. Linde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:38
CPC Classifications
F; F21; F21V; F21V25/00; F21V25/02; F21V25/04; A; A61; A61G; A61G7/00; A61G7/05; Y; Y10; Y10S; Y10S362/00; Y10S362/801; Y10S362/802
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
199 words
In a combination comprising an electric lighting fixture to be mounted to a wall, so as to overhang an electrically elevatable bed, and a switch to be connected in electrical circuits for the fixture and the bed and arranged to enable electric power to elevate the bed under normal conditions but to disable such power upon physical interference between the bed, or an object carried by the bed, and the fixture, an improvement wherein the fixture is to be mounted to the wall be a means permitting the fixture as a whole to be displaced from an attitude close to the wall when any part of the fixture is urged upwardly at a point away from the wall, and wherein the switch is arranged for movement between a closed position to enable electric power to elevate the bed when the fixture assumes such attitude and an open position to disable such power when the fixture has been displaced from such attitude, said switch being provided with an operating member yieldably biasing the latter toward said closed position, said member being disposed for holding said switch in said closed position against said biasing only when said fixture assumes such attitude.
Claim 2
Dependent Claim
199 words
In a combination comprising an electric lighting fixture to be mounted to a wall, so as to overhang an electrically elevatable bed, and a switch to be connected in electrical circuits for the fixture and the bed and arranged to enable electric power to elevate the bed under normal conditions but to disable such power upon physical interference between the bed, or an object carried by the bed, and the fixture, an improvement wherein the fixture is to be mounted to the wall be a means permitting the fixture as a whole to be displaced from an attitude close to the wall when any part of the fixture is urged upwardly at a point away from the wall, and wherein the switch is arranged for movement between a closed position to enable electric power to elevate the bed when the fixture assumes such attitude and an open position to disable such power when the fixture has been displaced from such attitude, said switch being provided with an operating member yieldably biasing the latter toward said closed position, said member being disposed for holding said switch in said closed position against said biasing only when said fixture assumes such attitude.
Claim 3
Dependent Claim
37 words
The improvement of claim 1 wherein the means to mount the fixture to the wall is a hinge permitting the fixture as a whole to be pivoted upwardly about a horizontally disposed axis when urged as mentioned.
Claim 4
Dependent Claim
25 words
The improvement of claim 2 wherein the hinge has a leaf to be mounted to the wall whereby the axis is close to the wall.
References Cited (Backward Citations)
US3769502A
Cited
US3919540A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-04-09 | 1982-10-09 | 1983-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-09 | 1986-10-09 | 1987-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-09 | 1990-10-09 | 1991-04-10 | $7700.00 | Window Closed / Lapsed |