US4093244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stuffing-box seal particularly for rotating shafts
Assignee: Renault SA
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Filing: 1977-01-07
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Granted: 1978-06-06
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Expires: 1997-01-07
Abstract
Abstract A stuffing-box seal for rotating shafts having a retaining sleeve for a ring seal which constitutes the seat for two caps disposed axially on the rotating shaft which insure centering of the ring seal, the centering caps having bearing surfaces contacting the rotating shaft at the opposing axial ends of the ring seal and being appropriately bonding with the retaining sleeve.
Inventors
- 👤 Jean-Jacques Boutant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:45
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/3204; F16J15/3224
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
79 words
A stuffing-box seal particularly adapted for rotating shafts, comprising: a ring seal; a retaining sleeve for said ring seal; an external housing; a centering sleeve bonded together with said external housing and said retaining sleeve; and two centering caps located at the opposing axial ends of said ring seal being held by said retaining sleeve wherein one of said centering caps has a set of orifices and grooves for supplying lubricant to a sealing lip of said ring seal.
Claim 2
Dependent Claim
79 words
A stuffing-box seal particularly adapted for rotating shafts, comprising: a ring seal; a retaining sleeve for said ring seal; an external housing; a centering sleeve bonded together with said external housing and said retaining sleeve; and two centering caps located at the opposing axial ends of said ring seal being held by said retaining sleeve wherein one of said centering caps has a set of orifices and grooves for supplying lubricant to a sealing lip of said ring seal.
Claim 3
Dependent Claim
96 words
A stuffing-box seal particulary adapted for rotating shafts, comprisng; a ring seal; a retaining sleeve for said ring seal; an external housing; a centering sleeve bonded together with said external housing and said retaining sleeve; and two centering caps located at the opposing axial ends of said ring seal being held by said retaining sleeve wherein said retaining sleeve of said ring seal is bonded together with said centering caps and said caps are held apart by a backing of said ring and wherein said caps have self-lubricating cylindrical bearing surfaces for receiving said rotating shaft.
Claim 4
Dependent Claim
96 words
A stuffing-box seal particulary adapted for rotating shafts, comprisng; a ring seal; a retaining sleeve for said ring seal; an external housing; a centering sleeve bonded together with said external housing and said retaining sleeve; and two centering caps located at the opposing axial ends of said ring seal being held by said retaining sleeve wherein said retaining sleeve of said ring seal is bonded together with said centering caps and said caps are held apart by a backing of said ring and wherein said caps have self-lubricating cylindrical bearing surfaces for receiving said rotating shaft.
Claim 5
Dependent Claim
93 words
A stuffing-box seal particularly adapted for rotating shafts, comprising; a ring seal; a retaining sleeve for said ring seal; an external housing; a centering sleeve bonded together with said external housing and said retaining sleeve; and two centering caps located at the opposing axial ends of said ring seal being held by said retaining sleeve wherein said retaining sleeve of said ring seal is bonded together with said centering caps and said caps are held apart by a backing of said ring and wherein said centering caps are made of a frited material.
Claim 6
Dependent Claim
93 words
A stuffing-box seal particularly adapted for rotating shafts, comprising; a ring seal; a retaining sleeve for said ring seal; an external housing; a centering sleeve bonded together with said external housing and said retaining sleeve; and two centering caps located at the opposing axial ends of said ring seal being held by said retaining sleeve wherein said retaining sleeve of said ring seal is bonded together with said centering caps and said caps are held apart by a backing of said ring and wherein said centering caps are made of a frited material.
Claim 7
Dependent Claim
98 words
A stuffing-box seal particularly adapted for rotating shafts, comprising; a ring seal; a retaining sleeve for said ring seal; an external housing; a centering sleeve bonded together with said external housing and said retaining sleeve; and two centering caps located at the opposing axia ends of said ring seal being held by said retaining sleeve wherein said retaining sleeve of said ring seal is bonded together with said centering caps and said caps are held apart by a backing of said ring and wherein said centering caps are made of a polyamide material mixed with an antifriction substance.
Claim 8
Dependent Claim
98 words
A stuffing-box seal particularly adapted for rotating shafts, comprising; a ring seal; a retaining sleeve for said ring seal; an external housing; a centering sleeve bonded together with said external housing and said retaining sleeve; and two centering caps located at the opposing axia ends of said ring seal being held by said retaining sleeve wherein said retaining sleeve of said ring seal is bonded together with said centering caps and said caps are held apart by a backing of said ring and wherein said centering caps are made of a polyamide material mixed with an antifriction substance.
Claim 9
Dependent Claim
25 words
A stuffing-box seal as set forth in claim 1, wherein said centering sleeve includes an external and internal wall cooperating to form a cellular chamber.
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) | 1981-06-05 | 1981-12-05 | 1982-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-05 | 1985-12-05 | 1986-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-05 | 1989-12-05 | 1990-06-06 | $7700.00 | Window Closed / Lapsed |