US3602533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spiral ring coupling means
Assignee: American Electric Manufacturing Corp
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Filing: 1969-09-12
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Granted: 1971-08-31
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Expires: 1989-09-12
Abstract
Abstract A coupling arrangement for a luminaire including a first element or luminaire reflector having an annular external flange, a second element or luminaire refractor having an annular external flange, and a spiral-shaped coupling ring having a continuous groove or recess extending along the inner circumference of the ring. The coupling ring is adapted to be hand installed by spiralling the ring over the coaxially arranged juxtapositioned flanges of the first and second elements and with the ring in an installed disposition assuming the form of a plane curve spiral and with the opposite end portions of the coupling ring being in radially overlapping arrangement.
Inventors
- 👤 George N Starr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:37
CPC Classifications
F; F16; F16L; F16L33/00; F16L33/02; F16J; F16J13/00; F16J13/02; F16J13/10; F16L23/00; F16L23/04; F21; F21V; F21V17/00; F16B; F16B2200/00; F16B2200/50; F16B2200/509; Y; Y10; Y10T; Y10T24/00; Y10T24/14; Y10T24/1457; Y10T292/00; Y10T292/20; Y10T292/205
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
159 words
Coupling means for coupling together a pair of parts respectively having circular flange portions, said coupling means comprising a spiral-shaped coupling ring having structure defining substantially a continuous extending along the inner circumference of said ring and with said recess being defined in part by generally opposingly facing first and second annular surfaces, said coupling ring being adapted to be removably fitted around respectively the flange portions of said parts with said first and second annular surfaces of said coupling ring recess being in surface-to-surface engaging relationship with said flange portions respectively of said parts, and said ring including frictional locking means for restraining said ring against expansion movement including opposing portions of said ring along the interior surface thereof being adapted to frictionally engage and overlie other portions of said ring facing oppositely along the exterior surface thereof and with the friction forces between said opposing portions being the sole locking means for restraining said ring against expansion.
Claim 2
Dependent Claim
159 words
Coupling means for coupling together a pair of parts respectively having circular flange portions, said coupling means comprising a spiral-shaped coupling ring having structure defining substantially a continuous extending along the inner circumference of said ring and with said recess being defined in part by generally opposingly facing first and second annular surfaces, said coupling ring being adapted to be removably fitted around respectively the flange portions of said parts with said first and second annular surfaces of said coupling ring recess being in surface-to-surface engaging relationship with said flange portions respectively of said parts, and said ring including frictional locking means for restraining said ring against expansion movement including opposing portions of said ring along the interior surface thereof being adapted to frictionally engage and overlie other portions of said ring facing oppositely along the exterior surface thereof and with the friction forces between said opposing portions being the sole locking means for restraining said ring against expansion.
Claim 3
Dependent Claim
21 words
The coupling means of claim 1 in which said ring includes means for wedging the overlying portions of said ring together.
Claim 4
Dependent Claim
27 words
The coupling means of claim 2 in which said means for wedging the overlying portions of said ring together comprises beveled rim portions included in said ring.
Claim 5
Dependent Claim
15 words
The coupling means of claim 3 in which the material of said ring is elastic.
Claim 6
Dependent Claim
39 words
The coupling means of claim 3 wherein said coupling ring is formed of elastic sheet material and the ring in radial section is substantially U-shaped with one of the legs of the U being angled relative to the other.
Claim 7
Dependent Claim
22 words
The coupling means of claim 3 wherein said coupling ring is of a spiral length of at least one and one-half turns.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |