US3625796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a motor vehicle lamp assembly
Assignee: Motors Liquidation Co
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Filing: 1969-09-15
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Granted: 1971-12-07
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Expires: 1989-09-15
Abstract
Abstract A motor vehicle lamp assembly includes a plastic lens having a rearwardly extending peripheral lip which is received within a forwardly opening channel formed in a lamp housing. The channel is filled with an initially liquified thermoplastic resin which solidifies upon cooling to establish a strain-free, watertight joint between the lens and the lamp housing.
Inventors
- 👤 George H Graves
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:40
CPC Classifications
B; B60; B60Q; B60Q1/00; B60Q1/26; B60Q1/2607
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
A method of peripherally joining and sealing a plastic lens member to a housing member to form a motor vehicle lamp assembly comprising the steps of: forming a liquid containable channel in one of the members and a complemental projecting lip in the other of the members; preheating the members above 150* F. to an elevated temperature at which a liquified thermoplastic resin will adhere to the surfaces of said channel and said lip; pouring a liquified polyamide thermoplastic resin into said channel at an elevated temperature in excess of 300* F. such that said resin remains liquified for a predetermined time after pouring; placing said lip within said channel and into said liquified resin within said predetermined time; positioning said lip with respect to said channel so that said liquified resin continuously wets the inner and outer surfaces of said lip; and slowly cooling the members to gradually and progressively establish a strain-free, watertight seal therebetween.
Claim 2
Independent Claim
197 words
A method of peripherally joining and sealing a plastic lens member to a housing member to form a strain-free motor vehicle lamp assembly comprising the steps of: forming a liquid containable channel in one of the members; forming a projecting lip in the other of the members complemental to the channel but having a lesser width than said channel; preheating the members above 150* F. to an elevated temperature at which a liquified polyamide thermoplastic resin will adhere to the surfaces of said channel and said lip; pouring a liquified polyamide thermoplastic resin into said channel at an elevated temperature above 300* F. such that said resin remains liquified for a predetermined time after pouring; placing said lip into said channel and said liquified resin within said predetermined time; positioning said lip in spaced relationship to the surfaces of the channel and in continuous peripheral contact with the resin so that said liquified resin continuously wets the preheated inner and outer surfaces of said lip; applying a clamping pressure to the members sufficient to prevent relative movement therebetween but insufficient to cause stressing thereof; and cooling the members to gradually and progressively establish a strain-free, watertight seal.
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) | 1974-12-06 | 1975-06-07 | 1975-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-06 | 1979-06-07 | 1979-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-06 | 1983-06-07 | 1983-12-07 | $7700.00 | Window Closed / Lapsed |