US4975810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light source
Assignee: VANDERBEL FRANS G
•
Filing: 1990-03-14
•
Granted: 1990-12-04
•
Expires: 2010-03-14
Abstract
Abstract Light source for providing light to fibre optic medical instruments and the like, source including dual lamps for alternate use and an efficient cooling system.
Inventors
- 👤 Frans G. VanDerBel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:15
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/04; A61B1/041; F; F21; F21V; F21V29/00; F21V29/50; F21V29/60; F21V29/67; A61B1/06; A61B1/0661; A61B1/0669; F21L; F21L14/00; G; G02; G02B; G02B6/00; G02B6/0001; G02B6/0005; G02B6/0006; A61B1/07; F21W; F21W2131/00; F21W2131/20; Y; Y10; Y10S; Y10S362/00; Y10S362/802
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
122 words
Light source comprising: (a) a box-like housing having a front wall and two opposed end walls, defining an interior space, (b) a venting screen on each of the said end walls, (c) a fan mounted in the interior space to provide for air flow through the venting screens, (d) a lamp assembly mounted in the interior space, and (e) a connector formed on one of the said walls for engagement with a fibre optic cable, wherein each end wall of the housing is provided with an indentation on the surface of which is located said venting screen, and wherein a handle bar extends across each indentation to facilitate the carrying of the housing and to prevent the venting screens from being blocked.
Claim 2
Dependent Claim
122 words
Light source comprising: (a) a box-like housing having a front wall and two opposed end walls, defining an interior space, (b) a venting screen on each of the said end walls, (c) a fan mounted in the interior space to provide for air flow through the venting screens, (d) a lamp assembly mounted in the interior space, and (e) a connector formed on one of the said walls for engagement with a fibre optic cable, wherein each end wall of the housing is provided with an indentation on the surface of which is located said venting screen, and wherein a handle bar extends across each indentation to facilitate the carrying of the housing and to prevent the venting screens from being blocked.
Claim 3
Dependent Claim
31 words
Light source as recited in claim 1, wherein the connector includes a shutter to close a primary aperture in the wall when there is no engagement with a fibre optic cable.
Claim 4
Dependent Claim
57 words
Light source as recited in claim 2, wherein the shutter is mounted in guides which permit vertical sliding movement, wherein the shutter is formed with a secondary aperture that is non-coextensive with the primary aperture when the shutter is in a lower position and co-extensive with the primary aperture when the shutter is in an upper position.
Claim 5
Dependent Claim
49 words
Light source as recited in claim 1, wherein the lamp assembly includes two lamps and means for moving the lamps from a first position in which one lamp is in alignment with the connector to a second position in which the other lamp is in alignment with the connector.
Claim 6
Dependent Claim
54 words
Light source as recited in claim 4, wherein the said means for moving includes a platform on which the lamps are mounted and which is movable to carry the lamps from the first position to the second position, and wherein an actuating rod is attached to the platform and extends externally of the housing.
Claim 7
Dependent Claim
34 words
Light source as recited in claim 5, wherein the rod is provided with a flat vertical surface that bears warning indicia and which is exposed when the lamps are in the said second position.
Claim 8
Dependent Claim
52 words
Light source as recited in claim 5, wherein the platform is connected to a switching apparatus which is actuated by movement of the platform between the said first and second positions, and which energizes one lamp or the other only at the termination of the movement at one end or the other.
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) | 1993-12-03 | 1994-06-04 | 1994-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-12-03 | 1998-06-04 | 1998-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-12-03 | 2002-06-04 | 2002-12-04 | $7700.00 | Window Closed / Lapsed |