Patent US4146812A successfully refreshed from Google Patents.
US4146812A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor vehicle headlight having filling hole sealed with non-rigid material
Assignee: GTE Sylvania Inc
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Filing: 1978-05-01
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Granted: 1979-03-27
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Expires: 1998-05-01
Abstract
Abstract A motor vehicle headlight comprises a curved reflector having a lens bonded to the front thereof. A tungsten-halogen capsule is disposed within the reflector. A filling hole extends through the rear of the reflector, the hole being hermetically sealed by means of a nonrigid sealing material.
Inventors
- 👤 Peter R. Gagnon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:34
CPC Classifications
H; H01; H01K; H01K7/00; H01K7/02; H01K3/00; H01K3/26
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
48 words
A motor vehicle headlight comprising: an envelope having a curved reflector at the rear thereof, and having a tungsten-halogen capsule disposed therein; a filling hole extending through the rear of the reflector, the filling hole being hermetically sealed by means of a nonrigid sealing material in the hole.
Claim 2
Dependent Claim
48 words
A motor vehicle headlight comprising: an envelope having a curved reflector at the rear thereof, and having a tungsten-halogen capsule disposed therein; a filling hole extending through the rear of the reflector, the filling hole being hermetically sealed by means of a nonrigid sealing material in the hole.
Claim 3
Dependent Claim
27 words
The headlight of claim 1 comprising, in addition, electrical terminals fastened to the rear of the reflector and wherein the filling hole is located between the terminals.
Claim 4
Dependent Claim
25 words
The headlight of claim 1 wherein the sealing material is a room-temperature-curing rubbery material that has been applied to the hole in a paste form.
Claim 5
Dependent Claim
15 words
The headlight of claim 1 wherein the sealing material is a plug of rubber-like material.
Claim 6
Independent Claim
60 words
The method of making a motor vehicle headlight comprising the steps of: providing a reflector envelope containing a tungsten-halogen capsule and having a filling hole through the rear of the reflector; evacuating the envelope through the filling hole and filling the envelope with a dry gas to about atmospheric pressure; and sealing the filling hole with a nonrigid sealing material.
Claim 7
Independent Claim
60 words
The method of making a motor vehicle headlight comprising the steps of: providing a reflector envelope containing a tungsten-halogen capsule and having a filling hole through the rear of the reflector; evacuating the envelope through the filling hole and filling the envelope with a dry gas to about atmospheric pressure; and sealing the filling hole with a nonrigid sealing material.
Claim 8
Dependent Claim
40 words
The method of claim 5 wherein the evacuating step is accomplished by means of a tube a part of which is rubber-like and is in sufficient pressure contact with the reflector about the hole to permit evacuation of the envelope.
Claim 9
Dependent Claim
27 words
The method of claim 5 wherein the filling hole is exposed to the ambient atmosphere for a short time between the evacuating step and the sealing step.
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) | 1982-03-26 | 1982-09-25 | 1983-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-26 | 1986-09-25 | 1987-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-26 | 1990-09-25 | 1991-03-27 | $7700.00 | Window Closed / Lapsed |