US3632009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seal for joining hollow cylindrical bodies to dished caps and method of providing same
Assignee: Rheem Manufacturing Co
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Filing: 1969-04-07
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Granted: 1972-01-04
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Expires: 1989-04-07
Abstract
Abstract A cylindrical water tank body is joined with a dished cap which forms the water tank bottom by flaring both the edge of the body and the edge of the cap outwardly so that the lower edge surface of the cap fits against the inner flared surface of the body to hold the cap in a fixed position. The cap is then welded to the body.
Inventors
- 👤 Giulio Borromeo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 23:12
CPC Classifications
B; B65; B65D; B65D7/00; B65D7/12; B65D7/34; B65D7/38; Y; Y10; Y10S; Y10S220/00; Y10S220/29
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
224 words
A seam for a tank, said tank including an open ended, cylindrical body and a dished cap over said open end of said body, said cap including an interior surface, a lower edge surface and an exterior surface, said seam comprising, in combination: a circumferential edge portion of said body at the open end thereof comprising a wall flared outwardly from the longitudinal axis of said body, said wall terminating at the open end of said body and said wall also including an inside and an outside, a circumferential edge portion of said cap including the lower edge surface, said circumferential edge portion of said cap flared outwardly from the longitudinal axis of said cap, said lower edge surface of said cap defining the maximum diameter of said cap, said lower edge surface of said cap abutting against the inside of said wall and providing a first section of said inside extending outside said tank, said first section not in contact wIth said cap and defining a diameter no less than said maximum diameter of said cap, and a second section of said inside within said tank, said interior surface of said cap forming an angle of intersection with said second section greater than 90*, and only a single weld between said exterior surface of said cap and said body adjacent said first section.
Claim 2
Dependent Claim
224 words
A seam for a tank, said tank including an open ended, cylindrical body and a dished cap over said open end of said body, said cap including an interior surface, a lower edge surface and an exterior surface, said seam comprising, in combination: a circumferential edge portion of said body at the open end thereof comprising a wall flared outwardly from the longitudinal axis of said body, said wall terminating at the open end of said body and said wall also including an inside and an outside, a circumferential edge portion of said cap including the lower edge surface, said circumferential edge portion of said cap flared outwardly from the longitudinal axis of said cap, said lower edge surface of said cap defining the maximum diameter of said cap, said lower edge surface of said cap abutting against the inside of said wall and providing a first section of said inside extending outside said tank, said first section not in contact wIth said cap and defining a diameter no less than said maximum diameter of said cap, and a second section of said inside within said tank, said interior surface of said cap forming an angle of intersection with said second section greater than 90*, and only a single weld between said exterior surface of said cap and said body adjacent said first section.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-03 | 1975-07-05 | 1976-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-03 | 1979-07-05 | 1980-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-03 | 1983-07-05 | 1984-01-04 | $7700.00 | Window Closed / Lapsed |