US4551791A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recessed lamp
Assignee: Stabeg Apparatebau GmbH
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Filing: 1984-05-31
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Granted: 1985-11-05
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Expires: 2004-05-31
Abstract
Abstract A lamp adapted to be mounted in a hole in a wall has an outer frame fittable in the hole, an inner housing part for securing the frame snugly in the hole bearing inward against the wall, a generally part-cylindrical reflector engageable snugly inside the frame, extending along an axis, and having one end extending axially past the opening and a socket for a bulb at the one end of the reflector. The reflector is of limitedly elastically flexible sheet metal, is of U-section, and at least one of its ends is axially open. A terminal box is provided on the inner housing part and a flexible electric wire extends between the box and the socket, passing out through the open end of the reflector. Both ends of the reflector extend axially past the opening and bear on the outer frame, and the reflector has axially extending edges provided with tabs engaging outwardly into the outer frame.
Inventors
- 👤 Werner Salansky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:04
CPC Classifications
F; F21; F21V; F21V21/00; F21V21/02; F21V21/04; F21S; F21S8/00; F21S8/02; F21V19/00; F21V19/0075; F21V19/008; F21Y; F21Y2103/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
133 words
A lamp adapted to be mounted in a hole in a wall, the lamp comprising: an outer frame fittable in the hole; means for securing the frame snugly in the hole bearing inward against the wall; a generally part-cylindrical reflector engaged snugly inside the frame, extending along an axis, and having a pair of axially open ends bearing outward against the outer frame and extending axially past the opening, the reflector being of limitedly elastically flexible sheet metal and of U-section and having axially extending edges provided with tabs engaging outward into the outer frame; a socket for a bulb at one of the ends of the reflector and wholly hidden by the frame; a terminal box on the securing means; and a flexible electric wire extending between the box and the socket.
Claim 2
Dependent Claim
133 words
A lamp adapted to be mounted in a hole in a wall, the lamp comprising: an outer frame fittable in the hole; means for securing the frame snugly in the hole bearing inward against the wall; a generally part-cylindrical reflector engaged snugly inside the frame, extending along an axis, and having a pair of axially open ends bearing outward against the outer frame and extending axially past the opening, the reflector being of limitedly elastically flexible sheet metal and of U-section and having axially extending edges provided with tabs engaging outward into the outer frame; a socket for a bulb at one of the ends of the reflector and wholly hidden by the frame; a terminal box on the securing means; and a flexible electric wire extending between the box and the socket.
Claim 3
Dependent Claim
35 words
The lamp defined in claim 1 wherein the securing means includes: an inner housing part bearing outward against the wall around the hole; and means attaching the inner housing part resiliently to the outer frame.
Claim 4
Dependent Claim
31 words
The lamp defined in claim 2 wherein the attaching means includes a flexible strap fixed to the outer frame and fasteners connected between the inner housing part and the flexible strap.
Claim 5
Dependent Claim
30 words
The lamp defined in claim 3 wherein the inner housing part is a flexibly deformable U-shaped element secured by the fasteners to the strap and bearing outward against the wall.
Claim 6
Dependent Claim
21 words
The lamp defined in claim 2 wherein the inner housing part has a plurality of legs bearing outward against the wall.
Claim 7
Dependent Claim
24 words
The lamp defined in claim 2 wherein the attaching means includes tension springs engaged between the inner housing part and the outer frame part.
Claim 8
Dependent Claim
44 words
The lamp defined in claim 6 wherein the springs have outer ends hooked directly into the outer frame part and inner ends, the attaching means including pivotal tensioning elements on the inner housing part and having outer ends connected to the inner spring ends.
Claim 9
Dependent Claim
48 words
The lamp defined in claim 7 wherein the tensioning element are displaceable between open positions with their outer ends relatively close to the outer frame part and closed positions with their outer ends relatively far therefrom, whereby movement from the open to the closed positions tensions the springs.
Claim 10
Dependent Claim
24 words
The lamp defined in claim 8 wherein the inner housing part is provided with means for latching the tensioning elements in the closed positions.
Claim 11
Dependent Claim
103 words
The lamp defined in claim 9 wherein the latching means includes a notch formed in the inner housing part, the tensioning element having a projecting arm engageable with the inner housing part and through the notch, the tensioning element further being pivotal about and displaceable along an axis between a center position with the arm engageable with the inner housing part and preventing pivoting of the element and a laterally offset position with the arm engageable through the notch and movable freely between the closed and open positions, the respective springs being more tensioned in the offset position than in the center position.
References Cited (Backward Citations)
AT323961B
Cited
US4412276A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-11-04 | 1989-05-06 | 1989-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-04 | 1993-05-06 | 1993-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-04 | 1997-05-06 | 1997-11-05 | $7700.00 | Window Closed / Lapsed |