Patent US3786243A successfully refreshed from Google Patents.
US3786243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light fixture having gimballed open ring carrying focused light pipe outlets
Assignee: Original Hanau Quarzlampen GmbH
•
Filing: 1972-08-18
•
Granted: 1974-01-15
•
Expires: 1992-08-18
Abstract
Abstract A light fixture for a hospital operating room comprises an open circle light outlet ring gimballed within a pivotable yoke. One or more light sources are provided which feed a plurality of light pipe whose outlets are disposed around the inner periphery of the ring. The outlet ends of the light pipes are inclined with respect to the horizontal plane to focus the light toward the center of the area beneath the ring. The light sources may be disposed behind the yoke pivot to provide a counterweight, or within the ring in order to shorten the length of the light pipes.
Inventors
- 👤 K Ilzig
- 👤 K Junginger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:14
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/0001; G02B6/0005; G02B6/0008; F; F21; F21W; F21W2131/00; F21W2131/20; F21W2131/205
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
157 words
An operating lamp having a movable lighting unit suspended over the operating area, said light unit comprising a plurality of light outlets connected to at least one light source via flexible light lines, characterized in that the ends of the light lines 16 project from the inner ring of the lighting unit 34 in the form of light outlets 36, said lighting unit being circular in construction, open on one side and rotatably mounted in a fork rest 30, the end surfaces of the light outlets 36 being inclined in respect of the horizontal plane of the operating lamp to focus the light beams 38 in the operating area, and further comprising a light generator 18 with a light source 20 disposed on the outside of the fork rest 30 and connected to a hinged bracket 14 provided to support the operating lamp, the light generator and light source acting as a counterweight to the lighting unit.
Claim 2
Dependent Claim
157 words
An operating lamp having a movable lighting unit suspended over the operating area, said light unit comprising a plurality of light outlets connected to at least one light source via flexible light lines, characterized in that the ends of the light lines 16 project from the inner ring of the lighting unit 34 in the form of light outlets 36, said lighting unit being circular in construction, open on one side and rotatably mounted in a fork rest 30, the end surfaces of the light outlets 36 being inclined in respect of the horizontal plane of the operating lamp to focus the light beams 38 in the operating area, and further comprising a light generator 18 with a light source 20 disposed on the outside of the fork rest 30 and connected to a hinged bracket 14 provided to support the operating lamp, the light generator and light source acting as a counterweight to the lighting unit.
Claim 3
Dependent Claim
44 words
An operating lamp according to claim 1, characterized in that the light lines 16 consisting of bundled glass fibers are disposed inside the fork rest 30 and divide into one line 26 and 28 for each half of the fork after the joint 25.
Claim 4
Dependent Claim
31 words
An operating lamp according to claim 2, characterized in that the lines 26,28 which connect the lighting unit 34 to the fork 30 pass through the inside of the swivel joints.
Claim 5
Dependent Claim
133 words
An operating lamp having a movable lighting unit suspended over the operating area, said light unit comprising a plurality of light outlets connected to a least one light source via flexible light lines, characterized in that the ends of the light lines 16 project from the inner ring of the lighting unit 34 in the form of light outlets 36, said lighting unit being circular in construction, open on one side and rotatably mounted in a fork rest 30, the light source comprising a light generator mounted inside the inner ring of the lighting unit opposite the open side of the lighting unit and centrally disposed on a plane of symmetry of the lighting unit, the light generator and light source acting as a counterweight for the inner ring of the lighting unit.
Claim 6
Dependent Claim
133 words
An operating lamp having a movable lighting unit suspended over the operating area, said light unit comprising a plurality of light outlets connected to a least one light source via flexible light lines, characterized in that the ends of the light lines 16 project from the inner ring of the lighting unit 34 in the form of light outlets 36, said lighting unit being circular in construction, open on one side and rotatably mounted in a fork rest 30, the light source comprising a light generator mounted inside the inner ring of the lighting unit opposite the open side of the lighting unit and centrally disposed on a plane of symmetry of the lighting unit, the light generator and light source acting as a counterweight for the inner ring of the lighting unit.
Claim 7
Dependent Claim
110 words
An operating lamp having a movable lighting unit suspended over the operating area, said light unit comprising a plurality of light outlets connected to at least one light source via flexible light lines, characterized in that the ends of the light lines 16 project from the inner ring of the lighting unit 34 in the form of light outlets 36, said lighting unit being circular in construction, open on one side and rotatably mounted in a fork rest 30, the inner ring of the lighting unit comprising two halves releasably connected by a coupling, and the light source comprising a light generator mounted in each half of the inner ring.
Claim 8
Dependent Claim
110 words
An operating lamp having a movable lighting unit suspended over the operating area, said light unit comprising a plurality of light outlets connected to at least one light source via flexible light lines, characterized in that the ends of the light lines 16 project from the inner ring of the lighting unit 34 in the form of light outlets 36, said lighting unit being circular in construction, open on one side and rotatably mounted in a fork rest 30, the inner ring of the lighting unit comprising two halves releasably connected by a coupling, and the light source comprising a light generator mounted in each half of the inner ring.
Claim 9
Dependent Claim
42 words
An operating lamp according to claim 5, characterized in that the fork for receiving the lighting unit is divided into two halves 54 each of which is swivellably connected with a hinged bracket 50 of the suspension means via a joint 52.
References Cited (Backward Citations)
US3437803A
Cited
GB1121606A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |