US4117535A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light fittings
Assignee: Individual
•
Filing: 1976-06-18
•
Granted: 1978-09-26
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Expires: 1996-06-18
Abstract
Abstract A link for use in a flexible support for a light fitting comprises a first section which has a part spherical outer surface and a second section which is connected to the first section and has a part spherical internal surface and a slot opening into said second section. Two similar links can be connected to make part of a flexible support by introducing the first section of a first link into the second section of a second link. The part spherical outer surface of the first section of the first link frictionally engages the part spherical internal surface of the second section of the second link so that the links can be placed in a desired position with respect to one another within limits imposed by the geometry of the slot.
Inventors
- 👤 John Ruy Holt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:03
CPC Classifications
F; F21; F21S; F21S6/00; F21S6/002; F21S6/003; F21V; F21V21/00; F21V21/14; F21V21/26; F21V21/28; F21V21/29; F21V21/32
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
161 words
In or for use in a flexible support for a light fitting, a link which comprises: (a) a first section which has a part spherical outer surface; and p1 (b) a second section which is connected to said first section and has a part spherical internal surface, and an elongated slot which opens into said second section communicating with said part spherical internal surface and extends from that portion of said second section remote from said first section to a point on said second section close to said first section; said link being such that the first section of a similar link can be introduced into the second section of said link so that the part spherical outer surface of the secton of said similar link is commensurate with and frictionally engages the part spherical internal surface of said second section of said link and said links can be moved relative to one another within the confines of said elongated slot.
Claim 2
Dependent Claim
161 words
In or for use in a flexible support for a light fitting, a link which comprises: (a) a first section which has a part spherical outer surface; and p1 (b) a second section which is connected to said first section and has a part spherical internal surface, and an elongated slot which opens into said second section communicating with said part spherical internal surface and extends from that portion of said second section remote from said first section to a point on said second section close to said first section; said link being such that the first section of a similar link can be introduced into the second section of said link so that the part spherical outer surface of the secton of said similar link is commensurate with and frictionally engages the part spherical internal surface of said second section of said link and said links can be moved relative to one another within the confines of said elongated slot.
Claim 3
Dependent Claim
31 words
A link according to claim 1, wherein the first and second section intersect to form a waist the external diameter of which is substantially equal to the width of the slot.
Claim 4
Dependent Claim
33 words
A link according to claim 2, wherein the ends of the slot are curved and have a radius of curvature which is approximately equal to one half the external diameter of the waist.
Claim 5
Dependent Claim
46 words
A link according to claim 1, wherein part of said first section remote from said second section is truncated and provided with an aperture which does not occupy the entire area of the truncated portion which will permit electric wires to be threaded through said link.
Claim 6
Dependent Claim
17 words
A plurality of links as claimed in claim 1 when joined together to form a flexible support.
Claim 7
Dependent Claim
25 words
A plurality of links as claimed in claim 5 when provided with a light fitting and an electric wire passing through said links internally thereof.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-25 | 1982-03-27 | 1982-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-25 | 1986-03-27 | 1986-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-25 | 1990-03-27 | 1990-09-26 | $7700.00 | Window Closed / Lapsed |