US4506316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Par spot lamp
Assignee: Osram Sylvania Inc
•
Filing: 1983-08-18
•
Granted: 1985-03-19
•
Expires: 2003-08-18
Abstract
Abstract A spot lamp having a lens in the form of a curved member having an inner surface with a series of radially disposed flutes formed therein defining a fluted portion which surrounds a centrally disposed stippled portion. The flutes each extend linearly from a position adjacent the stippled portion outwardly to a position adjacent the outer edge of the curved member. The surfaces of the flutes are also stippled.
Inventors
- 👤 William Thiry
- 👤 Arnold E. Westlund, Jr.
- 👤 Clarence D. Puckett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:39
CPC Classifications
F; F21; F21V; F21V5/00; F21V5/04; F21V13/00; F21V13/02; F21V13/04; F21V7/00; F21V7/04; F21V7/09
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
97 words
In a spot lamp including a reflector portion, a lens member adjacent said reflector portion, and a light source disposed within said reflector portion and substantially surrounded thereby, the improvement wherein said lens member comprises: a substantially curved member having an inner surface including therein a substantially centrally disposed stippled portion and a series of radially disposed flutes defining a fluted portion substantially surrounding said centrally disposed stippled portion, each of said flutes extending linearly from adjacent said stippled portion outwardly in a radial manner to a location substantially adjacent the outer edge of said curved member.
Claim 2
Dependent Claim
97 words
In a spot lamp including a reflector portion, a lens member adjacent said reflector portion, and a light source disposed within said reflector portion and substantially surrounded thereby, the improvement wherein said lens member comprises: a substantially curved member having an inner surface including therein a substantially centrally disposed stippled portion and a series of radially disposed flutes defining a fluted portion substantially surrounding said centrally disposed stippled portion, each of said flutes extending linearly from adjacent said stippled portion outwardly in a radial manner to a location substantially adjacent the outer edge of said curved member.
Claim 3
Dependent Claim
27 words
The improvement according to claim 1 wherein said first surface of said curved member is curved in a direction toward said light source within said reflector portion.
Claim 4
Dependent Claim
28 words
The improvement according to claim 2 wherein said curved member further includes an outer, second surface substantially parallel to said first surface, said second surface being substantially smooth.
Claim 5
Dependent Claim
27 words
The improvement according to claim 1 wherein the number of flutes formed within said inner surface is within the range of from about thirty-six to about seventy-two.
Claim 6
Dependent Claim
15 words
The improvement according to claim 1 wherein said light source comprises an axially mounted filament.
Claim 7
Dependent Claim
35 words
The improvement according to claim 5 wherein the candlepower distribution of said spot lamp is controllable by varying the number, shape and location of said flutes and/or the density of stipples within said stippled portion.
Claim 8
Dependent Claim
42 words
The improvement according to claim 1 wherein the length of each flute is within the range of from about 0.377 inch to about 0.693 inch, said lens member being substantially circular in configuration and having an outer diameter of about 4.750 inches.
Claim 9
Dependent Claim
41 words
The improvement according to claim 1 wherein said radially disposed flutes are arranged in an inner array and an outer array substantially surrounding said inner array, the stippling comprising said stippled portion being located between the flutes comprising said inner array.
Claim 10
Dependent Claim
17 words
The improvement according to claim 1 wherein the surfaces of all of said flutes include stipples therein.
Claim 11
Dependent Claim
40 words
The improvement according to claim 1 wherein each of said flutes is of a substantially tapered configuration having a narrower width at the end thereof nearest the center of said lens member than the width thereof nearest said outer edge.
Claim 12
Dependent Claim
22 words
The improvement according to claim 1 wherein said reflector portion of said spot lamp includes at least three different reflecting surfaces therein.
Claim 13
Dependent Claim
27 words
The improvement according to claim 11 wherein two of said surfaces are of substantially spherical configuration and the third of said surfaces is of substantially parabolic configuration.
References Cited (Backward Citations)
US3392277A
Cited
US4371916A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-03-18 | 1988-09-17 | 1989-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-18 | 1992-09-17 | 1993-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-18 | 1996-09-17 | 1997-03-19 | $7700.00 | Window Closed / Lapsed |