US3563556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boot-type shaft seal unit
Assignee: Federal Mogul LLC
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Filing: 1969-07-30
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Granted: 1971-02-16
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Expires: 1989-07-30
Abstract
Abstract An annular metal case supports a shaft-engaging elastomeric sealing member and has a pair of radially spaced apart cylindrical walls providing a bore-fitting surface and an annular recess between the walls. A separable elastomeric boot has an end portion anchored in the recess, an axially collapsible sleeve portion, and an outer end portion providing a ring in light reciprocating and rotary contact with the shaft.
Inventors
- 👤 Arthur M Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:18
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/3204; F16J15/3232; Y; Y10; Y10S; Y10S277/00; Y10S277/908
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
169 words
A device for sealing against the passage of liquid between a housing and a rotating shaft that projects beyond the housing and is also subject to reciprocating action, comprising: a radial shaft seal having an annular case with an outer cylindrical portion for engaging said housing in a leaktight fit, an inner generally cylindrical portion spaced away from said outer cylindrical portion and connected thereto by a generally radially extending portion, a radially inner anchor portion connected to said inner cylindrical portion, and an elastomeric sealing member supported by said anchor portion for a like-tight Fit with said shaft, said inner and outer cylindrical portions and said generally radially extending portion defining between them an annular receptacle; and a separate elastomeric shaft-encircling sleeve having an annular compressible portion substantially filling said receptacle and friction-locked to said case thereby, and having an elongated axially collapsible portion extending out therefrom and having, at a point remote from said case, a ring portion in light reciprocating and rotary contact with said shaft.
Claim 2
Independent Claim
169 words
A device for sealing against the passage of liquid between a housing and a rotating shaft that projects beyond the housing and is also subject to reciprocating action, comprising: a radial shaft seal having an annular case with an outer cylindrical portion for engaging said housing in a leaktight fit, an inner generally cylindrical portion spaced away from said outer cylindrical portion and connected thereto by a generally radially extending portion, a radially inner anchor portion connected to said inner cylindrical portion, and an elastomeric sealing member supported by said anchor portion for a like-tight Fit with said shaft, said inner and outer cylindrical portions and said generally radially extending portion defining between them an annular receptacle; and a separate elastomeric shaft-encircling sleeve having an annular compressible portion substantially filling said receptacle and friction-locked to said case thereby, and having an elongated axially collapsible portion extending out therefrom and having, at a point remote from said case, a ring portion in light reciprocating and rotary contact with said shaft.
Claim 3
Dependent Claim
33 words
The device of claim 1 wherein said case has an outer radial portion connected to said outer cylindrical portion and projecting radially outwardly therefrom, for engagement with an end wall of said housing.
Claim 4
Dependent Claim
25 words
The device of claim 1 wherein said ring portion includes a rigid ring member for contact with said shaft and adhered to the elastomeric sleeve.
Claim 5
Dependent Claim
15 words
The device of claim 1 wherein said sleeve consists of a single integral elastomeric member.
Claim 6
Dependent Claim
52 words
The device of claim 1 wherein said sleeve''s annular compressible portion comprises a thickened end portion with inner and outer cylindrical walls, an end wall, and sloping portions connecting said end wall to said cylindrical walls, the portion of said sleeve adjacent said end portion, being substantially thinner than said end portion.
Claim 7
Dependent Claim
31 words
The device of claim 1 wherein said axially collapsible portion is substantially cylindrical, with a thickening bead on the interior surface thereof in between the extremities of said axially collapsible portion.
Claim 8
Dependent Claim
95 words
A fluid seal for engagement with a rotating shaft that is subject to some reciprocation, including in combination: an annular metal case having a pair of cylindrical walls providing a bore-fitting portion and an annular recess; an elastomeric sealing member supported by said case in rotary sealing engagement with said shaft; and a separable elastomeric boot member having a first end portion frictionally anchored in said annular recess, an axially collapsible sleeve portion joined to said end portion, and a second end portion having a ring in light reciprocating and rotary contact with said shaft.
Claim 9
Dependent Claim
95 words
A fluid seal for engagement with a rotating shaft that is subject to some reciprocation, including in combination: an annular metal case having a pair of cylindrical walls providing a bore-fitting portion and an annular recess; an elastomeric sealing member supported by said case in rotary sealing engagement with said shaft; and a separable elastomeric boot member having a first end portion frictionally anchored in said annular recess, an axially collapsible sleeve portion joined to said end portion, and a second end portion having a ring in light reciprocating and rotary contact with said shaft.
Claim 10
Dependent Claim
16 words
The fluid seal of claim 7 wherein said boot member is a single homogeneous elastomeric piece.
Claim 11
Dependent Claim
20 words
The fluid seal of claim 7 wherein said ring is a separate rigid member secured to said second end portion.
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) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |