US3595585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary seal assembly
Assignee: Individual
•
Filing: 1970-02-05
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Granted: 1971-07-27
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Expires: 1990-02-05
Abstract
Abstract Rotary seal assembly for forming a dynamic seal between a rotating shaft and a stationary housing. The assembly includes an insert member which carries an O-ring and is adapted to be mounted in the housing in a plurality of discrete positions. In each of these positions, the O-ring engages a different portion of the shaft, thereby reducing the wear on the shaft and extending the life of the seal. A plurality of interchangeable insert members can be used to spread the wear over additional portions of the shaft.
Inventors
- 👤 Barney C Bristow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:12
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; Y; Y10; Y10S; Y10S277/00; Y10S277/91
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
89 words
In a rotary seal assembly for providing a dynamic seal between a rotating shaft and a stationary housing, an insert member adapted to be removably mounted in the housing in a plurality of discrete positions, said insert member being formed to include a through bore adapted for passing said shaft, means for forming a static seal between said insert member and said housing, and dynamic seal means carried by said insert member and adapted for rotatably engaging a different portion of said shaft in each of said discrete positions.
Claim 2
Dependent Claim
89 words
In a rotary seal assembly for providing a dynamic seal between a rotating shaft and a stationary housing, an insert member adapted to be removably mounted in the housing in a plurality of discrete positions, said insert member being formed to include a through bore adapted for passing said shaft, means for forming a static seal between said insert member and said housing, and dynamic seal means carried by said insert member and adapted for rotatably engaging a different portion of said shaft in each of said discrete positions.
Claim 3
Dependent Claim
24 words
A rotary seal assembly as in claim 1 wherein said insert member is a generally cylindrical member, with said through bore extending axially thereof.
Claim 4
Dependent Claim
38 words
A rotary seal assembly as in claim 2 wherein said means for forming a static seal comprises an annular groove opening through the outer wall of the cylindrical insert member and an O-ring disposed in said annular groove.
Claim 5
Dependent Claim
27 words
A rotary seal assembly as in claim 1 wherein said insert member is adapted to be mounted in said housing in a pair of axially reversed positions.
Claim 6
Dependent Claim
37 words
A rotary seal assembly as in claim 1 wherein said dynamic seal means includes an annular groove opening through the wall defining the through bore in said insert member and an O-ring disposed in said annular groove.
Claim 7
Dependent Claim
38 words
A rotary seal assembly as in claim 5 wherein said insert member is formed to include a second annular groove opening through the wall of said bore, said second annular groove being adapted for alternately receiving said O-ring.
Claim 8
Dependent Claim
54 words
A rotary seal assembly as in claim 5 together with a second insert member having a through bore and an annular groove opening through the wall thereof, and an O-ring disposed in said annular groove, said second insert member being adapted to be removably mounted in said housing in a plurality of discrete positions.
Claim 9
Dependent Claim
60 words
A rotary seal assembly as in claim 7 wherein the first-named and second insert members are adapted to be mounted in interchangeable positions and wherein the annular grooves are formed at different axial locations in each of said members whereby the O-rings in said annular grooves are adapted for engaging different portions of said shaft in each of said positions.
Claim 10
Dependent Claim
132 words
In a rotary seal assembly for providing a dynamic seal between a rotating shaft and a stationary housing, a generally cylindrical insert member adapted to be removably mounted in a plurality of discrete positions in the housing, at least two of said positions being axial reversals of each other, said insert member being formed to include an axially extending bore adapted for passing said shaft, an O-ring disposed in a groove formed in the outer surface of said insert member for forming a static seal between said insert member and said housing, and an annular groove formed in the wall of said axially extending bore and carrying an O-ring sealing member, said O-ring sealing member being adapted for rotatably engaging a different portion of said shaft in each of said discrete positions.
Claim 11
Dependent Claim
132 words
In a rotary seal assembly for providing a dynamic seal between a rotating shaft and a stationary housing, a generally cylindrical insert member adapted to be removably mounted in a plurality of discrete positions in the housing, at least two of said positions being axial reversals of each other, said insert member being formed to include an axially extending bore adapted for passing said shaft, an O-ring disposed in a groove formed in the outer surface of said insert member for forming a static seal between said insert member and said housing, and an annular groove formed in the wall of said axially extending bore and carrying an O-ring sealing member, said O-ring sealing member being adapted for rotatably engaging a different portion of said shaft in each of said discrete positions.
Claim 12
Dependent Claim
63 words
A rotary seal assembly as in claim 9 together with a second insert member of similar character, but having its annular groove formed at a different axial location than the annular groove in the first-named insert member, said insert members being adapted for mounting in interchangeable positions with the O-ring sealing members engaging different portions of said shaft in each of said positions.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |