Patent US4342071A successfully refreshed from Google Patents.
US4342071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Underwater lighting
Assignee: CHALLENGER ENGINEERING Ltd
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Filing: 1980-08-11
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Granted: 1982-07-27
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Expires: 2000-08-11
Abstract
Abstract A lamp capable of underwater use comprises a rectangular acrylic body with elongate V-shaped recesses in a major surface each receiving an elongate Beta-light. An acrylic cover plate is sealed to the major surface and the body is secured to a steel backing plate with a neoprene layer between to help dissipate shock loadings. The sides of the recesses include an angle of 78° to enhance reflection and may be formed by a reflective lining. The Beta-lights can be received in the grooves by shock absorbent O-rings grouped in pairs with adhesive in between. In a modification a disc-shaped Beta-light is encapsulated and received in a body formed by pour molding which is closed by a cap which is ultrasonically welded into place.
Inventors
- 👤 William B. Chamberlain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:52
CPC Classifications
F; F21; F21S; F21S8/00; F21V; F21V25/00; F21V25/12; F21V31/00; F21W; F21W2111/00; F21W2131/00; F21W2131/40; F21W2131/401
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
123 words
An undersea lamp comprising, in combination, a housing body portion having an elongate recess therein, a translucent housing cover portion extending over said recess and permanently sealed to said housing body portion, said elongate recess having a substantially V-shaped transverse section, an elongate light-reflective insert of V-shaped cross-section and length similar to those of said recess and firmly secured in said recess and opening to said translucent cover portion, and an elongate substantially cylindrically shaped self-energising radiation-type light source having a length substantially equal to that of the recess and fixedly mounted in said light-reflective insert in spaced relation to the walls thereof, the combination providing a self-contained lamp unit independent of external power sources and capable of duty in deep sea conditions.
Claim 2
Dependent Claim
123 words
An undersea lamp comprising, in combination, a housing body portion having an elongate recess therein, a translucent housing cover portion extending over said recess and permanently sealed to said housing body portion, said elongate recess having a substantially V-shaped transverse section, an elongate light-reflective insert of V-shaped cross-section and length similar to those of said recess and firmly secured in said recess and opening to said translucent cover portion, and an elongate substantially cylindrically shaped self-energising radiation-type light source having a length substantially equal to that of the recess and fixedly mounted in said light-reflective insert in spaced relation to the walls thereof, the combination providing a self-contained lamp unit independent of external power sources and capable of duty in deep sea conditions.
Claim 3
Dependent Claim
57 words
A lamp according to claim 1 wherein said light source is spaced from the walls of said insert by four O-rings, said O-rings being located in spaced pairs adjacent each end of the source, and the space between each pair of said O-rings containing an adhesive whereby said source is secured to said walls of said insert.
Claim 4
Dependent Claim
44 words
A lamp according to claim 1 wherein said body portion is a substantially rectangular block having the recess in a major surface thereof, and wherein said cover portion is a substantially rectangular plate sealed to said body portion to extend over said prior surface.
Claim 5
Dependent Claim
24 words
A lamp according to claim 3 wherein said body portion has an overhanging peripheral lip, and said cover portion is retained beneath said lip.
Claim 6
Dependent Claim
14 words
A lamp according to claim 1 wherein said housing portions are of acrylic resin.
Claim 7
Dependent Claim
17 words
A lamp according to claim 5 wherein said body portion and said cover portion are welded together.
Claim 8
Dependent Claim
17 words
A lamp according to claim 5 wherein the body portion and the cover portion are cemented together.
Claim 9
Dependent Claim
25 words
A lamp according to claim 2 wherein said housing cover and body are shaped to compress said O-rings to retain the light source firmly therebetween.
Claim 10
Dependent Claim
25 words
A lamp according to claim 1 wherein the sides of the recess are inclined to each other at an angle of between 70° and 80°.
Claim 11
Dependent Claim
12 words
A lamp according to claim 8 wherein the said angle is 78°.
Claim 12
Dependent Claim
22 words
A lamp according to claim 1 having four of the light sources each received in said insert in a respective said recess.
Claim 13
Dependent Claim
23 words
A lamp according to claim 1 having means between said housing portions adapted to provide a shock absorbent mounting for said light source.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-07-26 | 1986-01-25 | 1986-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-26 | 1990-01-25 | 1990-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-26 | 1994-01-25 | 1994-07-27 | $7700.00 | Window Closed / Lapsed |