US4191389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing washer
Assignee: Parker Hannifin Corp
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Filing: 1977-10-26
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Granted: 1980-03-04
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Expires: 1997-10-26
Abstract
Abstract A sealing washer for a socket head cap screw and the like characterized in that an elastomeric sealing ring within a rigid annular retainer has integral portions extending into radial channels in one side of the retainer. The sealing washer herein is further characterized in that the rigid annular retainer is made of relatively thin sheet stock which has folded over integral tabs to double the thickness of the retainer and to define channels on one side of the retainer which are filled with elastomeric material radiating from the elastomeric sealing ring within the retainer.
Inventors
- 👤 Jerry G. Jelinek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:58
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/10; F16J15/12; F16J15/121; F16J15/127; F16B; F16B43/00; F16B43/001
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
58 words
A sealing washer comprising an elastomeric sealing ring; and a rigid annular retainer around said sealing ring having radial channels on one side thereof defined between folded-over integral tabs of said retainer, said tabs having inner ends substantially tangent to the inside diameter of said retainer; said sealing ring having integral radially extending portions extending into said channels.
Claim 2
Dependent Claim
58 words
A sealing washer comprising an elastomeric sealing ring; and a rigid annular retainer around said sealing ring having radial channels on one side thereof defined between folded-over integral tabs of said retainer, said tabs having inner ends substantially tangent to the inside diameter of said retainer; said sealing ring having integral radially extending portions extending into said channels.
Claim 3
Dependent Claim
35 words
The sealing washer of claim 1 wherein said portions are bonded to the walls of said channels and wherein the periphery of said sealing ring is bonded to the inner peripheral edge of said retainer.
Claim 4
Dependent Claim
25 words
The sealing washer of claim 1 wherein said sealing ring is of axial thickness across opposite sealing ribs thereof exceeding the thickness of said retainer.
Claim 5
Dependent Claim
23 words
The sealing washer of claim 1 wherein said channels diverge radially outwardly from narrow circumferential width at the periphery of said sealing ring.
Claim 6
Dependent Claim
29 words
The sealing washer of claim 1 wherein said tabs are folded over to leave circumferentially extending openings which intercommunicate successive channels; and wherein said portions extend into said openings.
Claim 7
Dependent Claim
43 words
A sealing washer comprising an elastomeric sealing ring; and a rigid annular retainer around said sealing ring having radial channels on one side defined between folded-over integral tabs of said retainer; said sealing ring having integral radially extending portions substantially filling said channels.
Claim 8
Dependent Claim
43 words
A sealing washer comprising an elastomeric sealing ring; and a rigid annular retainer around said sealing ring having radial channels on one side defined between folded-over integral tabs of said retainer; said sealing ring having integral radially extending portions substantially filling said channels.
Claim 9
Dependent Claim
29 words
The sealing washer of claim 6 wherein said channels diverge from narrow circumferential width at the periphery of said sealing ring in a direction radially outwardly of said retainer.
Claim 10
Dependent Claim
20 words
The sealing washer of claim 6 wherein said tabs extend radially inwardly to substantially the inner periphery of said retainer.
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) | 1983-03-04 | 1983-09-03 | 1984-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-03-04 | 1987-09-03 | 1988-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-03-04 | 1991-09-03 | 1992-03-04 | $7700.00 | Window Closed / Lapsed |