Patent US2703773A successfully refreshed from Google Patents.
US2703773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welded plastic reflector units and the manufacture thereof
Assignee: Elastic Stop Nut Corp
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Filing: 1947-02-27
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Granted: 1955-03-08
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Expires: 1967-02-27
Abstract
No abstract record available.
Inventors
- 👤 Viola H Stimson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:05
CPC Classifications
B; B29; B29D; B29D11/00; B29D11/00605; B29D11/00625; B29C; B29C65/00; B29C65/02; B29C65/18; B29C66/00; B29C66/50; B29C66/51; B29C66/54; B29C66/545; B29C66/80; B29C66/81; B29C66/816; B29C66/8161; B29C66/83; B29C66/832; B29C66/8322; B29C66/70; B29C66/71; B29K; B29K2025/00; B29K2033/00; B29K2033/04; B29K2033/08; B29K2033/12; B29L; B29L2011/00; B29L2011/0083; B29L2024/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
85 words
AN ARTICLE COMPRISING A FIRST MEMBER HAVING A RIM OF THERMOPLASTIC MATERIAL AND A SECOND MEMBER HAVING A FLANGE OF THERMOPLASTIC MATERIAL ENCIRCLING SAID RIM AND ENGAGING THE OUTER PERIMETER OF SAID RIM TO FORM A SEAM PROVIDING A REENTRANT JOINT FOR MECHANICALLY RESISTING SEPARATION OF SAID MEMBERS, THE SURFACE EDGE OF THE SEAM BETWEEN SAID RIM AND SAID FLANGE BEING FUSION WELDED TO PROVIDE A HERMETIC SEAL BETWEEN SAID MEMBERS AND OPTIC SURFACES ON THE INNER FACE OF AT LEAST ONE OF SAID MEMBERS.
Claim 2
Dependent Claim
85 words
AN ARTICLE COMPRISING A FIRST MEMBER HAVING A RIM OF THERMOPLASTIC MATERIAL AND A SECOND MEMBER HAVING A FLANGE OF THERMOPLASTIC MATERIAL ENCIRCLING SAID RIM AND ENGAGING THE OUTER PERIMETER OF SAID RIM TO FORM A SEAM PROVIDING A REENTRANT JOINT FOR MECHANICALLY RESISTING SEPARATION OF SAID MEMBERS, THE SURFACE EDGE OF THE SEAM BETWEEN SAID RIM AND SAID FLANGE BEING FUSION WELDED TO PROVIDE A HERMETIC SEAL BETWEEN SAID MEMBERS AND OPTIC SURFACES ON THE INNER FACE OF AT LEAST ONE OF SAID MEMBERS.
Claim 3
Independent Claim
74 words
THE METHOD OF HERMETICALLY SEALING TOGETHER TWO BODIES OF THERMOPLASTIC MATERIAL HAVING TWO CONFRONTING SURFACES PROVIDING BETWEEN THEM A SEAM AND ADJACENT FACES EXTENDING LATERALLY AWAY FROM THE EXPOSED EDGE OF SAID SEAM, WHICH INCLUDES THE STEP OF APPLYING HEAT AND PRESSURE TO SAID FACES AT SPACED PLACES ALONG SAID EDGE OF THE SEAM TO CREATE SURFACE FLOW AND FUSION OF MATERIAL OF SAID FACES TO SEAL THE EXPOSED EDGE PORTION OF THE SEAM.
Claim 4
Independent Claim
74 words
THE METHOD OF HERMETICALLY SEALING TOGETHER TWO BODIES OF THERMOPLASTIC MATERIAL HAVING TWO CONFRONTING SURFACES PROVIDING BETWEEN THEM A SEAM AND ADJACENT FACES EXTENDING LATERALLY AWAY FROM THE EXPOSED EDGE OF SAID SEAM, WHICH INCLUDES THE STEP OF APPLYING HEAT AND PRESSURE TO SAID FACES AT SPACED PLACES ALONG SAID EDGE OF THE SEAM TO CREATE SURFACE FLOW AND FUSION OF MATERIAL OF SAID FACES TO SEAL THE EXPOSED EDGE PORTION OF THE SEAM.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-03-07 | 1958-09-06 | 1959-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-07 | 1962-09-06 | 1963-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-07 | 1966-09-06 | 1967-03-08 | $7700.00 | Window Closed / Lapsed |