US3955673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary shaft packing replacement kit
Assignee: Acadia Elastomers Corp
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Filing: 1974-11-18
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Granted: 1976-05-11
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Expires: 1994-11-18
Abstract
Abstract A repacking kit for replacement of fluid seals for devices such as pumps is described. The kit comprises a plurality of preformed, oversized circular split rings having a specified configuration. The rings assume a helical shape around the shaft to be sealed and each is cut to size in a single step. The kit is prepacked in a quantity (generally five rings) predetermined to be that required for complete replacement of the packing of a single pump.
Inventors
- 👤 Donald Edson Fosness
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:15
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/18; F16J15/20; B; B65; B65D; B65D71/00; B65D85/00; B65D85/58
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
97 words
A repacking kit for the replacement of mechanical packing surrounding a rotating shaft which comprises a plurality of preformed, oversized circular split rings, each of which has a configuration with an inner diameter approximately the same as the maximum diameter of the shaft to be sealed and a length greater than the circumference of the maximum diameter shaft to be sealed, said configuration being such that when each ring is initially placed in position on a shaft the ring assumes a helical configuration with its ends overlapping for simultaneous severing of both ends along a single line.
Claim 2
Dependent Claim
97 words
A repacking kit for the replacement of mechanical packing surrounding a rotating shaft which comprises a plurality of preformed, oversized circular split rings, each of which has a configuration with an inner diameter approximately the same as the maximum diameter of the shaft to be sealed and a length greater than the circumference of the maximum diameter shaft to be sealed, said configuration being such that when each ring is initially placed in position on a shaft the ring assumes a helical configuration with its ends overlapping for simultaneous severing of both ends along a single line.
Claim 3
Dependent Claim
13 words
The kit of claim 1 wherein said plurality of rings comprises five rings.
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US711024A
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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) | 1979-05-11 | 1979-11-10 | 1980-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-11 | 1983-11-10 | 1984-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-11 | 1987-11-10 | 1988-05-11 | $7700.00 | Window Closed / Lapsed |