Patent US2542914A successfully refreshed from Google Patents.
Patent US3437662A successfully refreshed from Google Patents.
US4803607A
Expired / Lapsed
US
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Surgical operating room lamp or similar lamp
Assignee: LIC CARE AB
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Filing: 1987-05-20
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Granted: 1989-02-07
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Expires: 2007-05-20
Abstract
Abstract Surgical operating room lamp comprising a lamp housing (10) and at least three reflectors (24, 26, 28) with bulbs or similar lamps provided in the housing and equally spaced around the center optical axis of the lamp housing. According to the invention all reflectors are carried by a flexible diaphragm member (16) which rests at its edge against an abutment shoulder (14) in the housing. The center of the diaphragm member is axially movable by means of a control member (18, 20, 22) to be flexed so as to adjust the angular position of the reflectors simultaneously.
Inventors
- 👤 Stig Jonsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:59
CPC Classifications
F; F21; F21V; F21V17/00; F21V17/02; F21W; F21W2131/00; F21W2131/20; F21W2131/205; Y; Y10; Y10S; Y10S362/00; Y10S362/804
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
150 words
Surgical operating room lamp comprising a lamp housing supporting at least three reflectors associated each with at least one bulb or similar lamp and being angularly adjustable to focus the light beams to a predetermined area along the central optical axis of the lamp housing, the reflectors being spaced equally around the optical axis, characterized in that the reflectors (24,26,28) and their bulbs are supported by a flexible diaphragm member (16) mounted in the lamp housing with its peripheral edge resting against a shoulder (14) or similar abutment; and that the diaphragm member is supported at its center by an axially adjustable control device (20,22) to displace the center of the diaphragm member away from the open end of the lamp housing to set those portions of the diaphragm member supporting the reflectors at the same angle to the optical axis thereby adjusting the angular position of all reflectors simultaneously.
Claim 2
Dependent Claim
150 words
Surgical operating room lamp comprising a lamp housing supporting at least three reflectors associated each with at least one bulb or similar lamp and being angularly adjustable to focus the light beams to a predetermined area along the central optical axis of the lamp housing, the reflectors being spaced equally around the optical axis, characterized in that the reflectors (24,26,28) and their bulbs are supported by a flexible diaphragm member (16) mounted in the lamp housing with its peripheral edge resting against a shoulder (14) or similar abutment; and that the diaphragm member is supported at its center by an axially adjustable control device (20,22) to displace the center of the diaphragm member away from the open end of the lamp housing to set those portions of the diaphragm member supporting the reflectors at the same angle to the optical axis thereby adjusting the angular position of all reflectors simultaneously.
Claim 3
Dependent Claim
38 words
Lamp according to claim 1, characterized in that the adjustable control device includes a nut member (18) and a screw (20) operable by means of a rotatable control member (22) located at the upper end of the lamp.
Claim 4
Dependent Claim
32 words
Lamp according to claim 1, characterized in that the diaphragm member is a flexible disc having its circular edge resting against the shoulder (14) provided on the inside of the lamp housing.
References Cited (Backward Citations)
DE828574C
Cited
US2846566A
Cited
GB927189A
Cited
AT237748B
Cited
US3887801A
Cited
US4025778A
Cited
US4135231A
Cited
US4316237A
Cited
US4280167A
Cited
US4390929A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-02-07 | 1992-08-08 | 1993-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-07 | 1996-08-08 | 1997-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-07 | 2000-08-08 | 2001-02-07 | $7700.00 | Window Closed / Lapsed |