Patent US3420722A successfully refreshed from Google Patents.
US3420722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of applying a protective wrapping to a conduit
Assignee: Nee and Mcnulty Inc
•
Filing: 1965-12-15
•
Granted: 1969-01-07
•
Expires: 1985-12-15
Abstract
No abstract record available.
Inventors
- 👤 Frank E Mcnulty
- 👤 Robert M-Nee
- 👤 Charles J Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:25
CPC Classifications
B; B29; B29C; B29C63/00; B29C63/02; B29C63/04; B29C63/08; B29C63/10; B29C63/105; B65; B65H; B65H81/00; B65H81/06; B65H81/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A METHOD OF WRAPPING A CONDUIT COVERED WITH A HOT APPLIED COATING WHICH COMPRISES AFFIXING THE FREE END OF AN UNSUPPORTED AYER OF SHEET-LIKE THERMOPLASTIC RESIN FILM TO THE COATED SURFACE OF SAID CONDUIT, AND SPIRALLY WRAPPING SAID CONDUIT WITH SAID FILM UNDER TENSION WHILE THE TEMPERATURE OF THAT PORTION OF THE COATING AS IT IS CONTACTED BY SAID FILM RANGES FROM THE STRETCH POINT TO THE SOFTENING POINT OF SAID FILM.
Claim 2
Independent Claim
72 words
A METHOD OF WRAPPING A CONDUIT COVERED WITH A HOT APPLIED COATING WHICH COMPRISES AFFIXING THE FREE END OF AN UNSUPPORTED AYER OF SHEET-LIKE THERMOPLASTIC RESIN FILM TO THE COATED SURFACE OF SAID CONDUIT, AND SPIRALLY WRAPPING SAID CONDUIT WITH SAID FILM UNDER TENSION WHILE THE TEMPERATURE OF THAT PORTION OF THE COATING AS IT IS CONTACTED BY SAID FILM RANGES FROM THE STRETCH POINT TO THE SOFTENING POINT OF SAID FILM.
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) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |