US3374532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a wall-rung
Assignee: Individual
•
Filing: 1962-10-05
•
Granted: 1968-03-26
•
Expires: 1982-10-05
Abstract
No abstract record available.
Inventors
- 👤 Zenhausern Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:37
CPC Classifications
B; B29; B29C; B29C63/00; B29C63/18; B21; B21D; B21D11/00; B21D11/10; B21D7/00; B21D7/06; B29C53/00; B29C53/02; B29C53/08; B29C53/083; B29L; B29L2009/00; B29L2023/00; B29L2023/004; B29L2023/22; B29L2031/00; B29L2031/46; B29L2031/463; B29L2031/745; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A METHOD OF MAKING A WALL-RUNG FROM A METAL TUBE COVERED WITH SLEEVE OF SYNTHETIC MATERIAL COMPRISING THE STEPS OF LOOSELY MOUNTING THE SLEEVE IN A COLD STATE ON THE TUBE, HOLDING THE TUBE AND SLEEVE AT THE MIDDLE BETWEEN THE ENDS THEREOF, AND BENDING THE TUBE INTO A WALL-RUNG SHAPE AND AT THE SAME TIME LENGTHWISE STRETCHING THE SLEEVE TO CAUSE THE SAME TO GRIP THE TUBE.
Claim 2
Independent Claim
68 words
A METHOD OF MAKING A WALL-RUNG FROM A METAL TUBE COVERED WITH SLEEVE OF SYNTHETIC MATERIAL COMPRISING THE STEPS OF LOOSELY MOUNTING THE SLEEVE IN A COLD STATE ON THE TUBE, HOLDING THE TUBE AND SLEEVE AT THE MIDDLE BETWEEN THE ENDS THEREOF, AND BENDING THE TUBE INTO A WALL-RUNG SHAPE AND AT THE SAME TIME LENGTHWISE STRETCHING THE SLEEVE TO CAUSE THE SAME TO GRIP THE TUBE.
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Cited
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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) | 1971-03-26 | 1971-09-25 | 1972-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-26 | 1975-09-25 | 1976-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-26 | 1979-09-25 | 1980-03-26 | $7700.00 | Window Closed / Lapsed |