US5028054A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Idler roller bearing and seal
Assignee: FMC Technologies Inc
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Filing: 1990-07-13
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Granted: 1991-07-02
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Expires: 2010-07-13
Abstract
Abstract A seal and bearing assembly is provided to seal the end of a conveyor roller. The seal is made up of an outer lip seal of a pliable material, a contact seal, a metallic labyrinth element and an interlocking labyrinth pliable material seal inboard of the outer lip seal.
Inventors
- 👤 Samuel O. Peach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:54
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/3248; F16J15/3252; F16J15/3256; F16J15/3264; B; B65; B65G; B65G39/00; B65G39/02; B65G39/09; F16C; F16C13/00; F16C13/02; F16C13/022; F16C33/00; F16C33/72; F16C33/76; F16C33/80; F16J15/54; F16C19/00; F16C19/02; F16C19/04; F16C19/06; F16C19/22; F16C19/34; F16C19/36; F16C19/364; F16C2326/00; F16C2326/58
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
186 words
A rotation motion accommodating seal for use in preventing the passage of a contaminant from one side of the seal to the other side of the seal comprising: a first labyrinth element having an outermost circumference and a first and a second circumferential projection inboard of said outermost circumference; a second labyrinth element having a central aperture defined by a significant base portion and a first and a second circumferential groove which accommodate said first and said second circumferential projections; a seal case having a circumference and having a circumferential wall, said wall in contact with said first labyrinth element and having a cross sectional shape defining a reversed S-shape with a web connecting said seal case wall to an innermost circumference of said seal case; a contact seal having a surface contacting said innermost circumference of said seal case; a circumferential lip sea having a cavity for accommodating said contact seal and said innermost circumference of said seal case and having a second cavity for accommodating said web of said seal case and having a circumferential lip greater than the circumference of said seal case.
Claim 2
Dependent Claim
186 words
A rotation motion accommodating seal for use in preventing the passage of a contaminant from one side of the seal to the other side of the seal comprising: a first labyrinth element having an outermost circumference and a first and a second circumferential projection inboard of said outermost circumference; a second labyrinth element having a central aperture defined by a significant base portion and a first and a second circumferential groove which accommodate said first and said second circumferential projections; a seal case having a circumference and having a circumferential wall, said wall in contact with said first labyrinth element and having a cross sectional shape defining a reversed S-shape with a web connecting said seal case wall to an innermost circumference of said seal case; a contact seal having a surface contacting said innermost circumference of said seal case; a circumferential lip sea having a cavity for accommodating said contact seal and said innermost circumference of said seal case and having a second cavity for accommodating said web of said seal case and having a circumferential lip greater than the circumference of said seal case.
Claim 3
Dependent Claim
34 words
The invention in accordance with claim 1 wherein said circumferential projections of said first labyrinth element extend into said grooves of said second labyrinth element without mutual contact between said projections and said grooves.
Claim 4
Dependent Claim
28 words
The invention in accordance with claim 2 wherein said first labyrinth element includes a circumferential projection extending from said element opposite to the direction of said circumferential projections.
Claim 5
Dependent Claim
135 words
A rotational motion accommodating seal for use in an assembly including an axle portion and a center tube supported by a bearing on said axle, said center tube having a circumferential end surface, said seal comprising: a first labyrinth element carried inside said tube and in contact therewith, said first labyrinth having first and second projections; a second labyrinth element carried on said axle and having first and second circumferential grooves which accommodate said first and second circumferential projections of said first labyrinth element; a contact seal in contact with said second labyrinth element; and a circumferential lip seal carried on said axle outboard of said second labyrinth element having a cavity for accommodating said contact seal, said lip seal having a circumferential lip in contact with said circumferential end surface of said center tube.
Claim 6
Dependent Claim
135 words
A rotational motion accommodating seal for use in an assembly including an axle portion and a center tube supported by a bearing on said axle, said center tube having a circumferential end surface, said seal comprising: a first labyrinth element carried inside said tube and in contact therewith, said first labyrinth having first and second projections; a second labyrinth element carried on said axle and having first and second circumferential grooves which accommodate said first and second circumferential projections of said first labyrinth element; a contact seal in contact with said second labyrinth element; and a circumferential lip seal carried on said axle outboard of said second labyrinth element having a cavity for accommodating said contact seal, said lip seal having a circumferential lip in contact with said circumferential end surface of said center tube.
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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) | 1994-07-01 | 1994-12-31 | 1995-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-01 | 1998-12-31 | 1999-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-01 | 2002-12-31 | 2003-07-02 | $7700.00 | Window Closed / Lapsed |