US4095803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Keyway oil seal assembly
Assignee: Cummins Inc
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Filing: 1977-08-23
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Granted: 1978-06-20
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Expires: 1997-08-23
Abstract
Abstract The disclosure illustrates an oil seal assembly for a keyway which receives a pin for an interconnection between an accessory drive pulley and a shaft extending from a diesel engine accessory drive gear box. The oil seal consists of an L-shaped elastomeric seal with one leg of the L extending into the keyway and the other leg providing a shoulder which abuts the shaft adjacent the keyway end. A nut threaded onto the end of the shaft holds a washer against the L-shaped seal thus compressing it. So compressed, the seal expands against the walls of the keyway to form an effective seal against the flow of oil therethrough. Preferably, the seal is formed from material which swells exceedingly when immersed in petroleum products. As a result, any leakage causes the seal to expand and stop further oil flow.
Inventors
- 👤 Charles David Meier
- 👤 Shelby Lewis Olvey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:37
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/068; F01; F01P; F01P5/00; F01P5/10; F02; F02B; F02B3/00; F02B3/06; Y; Y10; Y10S; Y10S277/00; Y10S277/934; Y10S277/935; Y10S277/944; Y10T; Y10T403/00; Y10T403/70; Y10T403/7018; Y10T403/7021
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
138 words
Apparatus comprising: a first member a second member telescoped over said first member, means for forming a groove extending axially from an end face of one of said members and a relatively rigid key and the like connected to the other of said members and projecting into said groove to prevent, at least in part, relative rotation of said members. a resilient seal having a first portion receivable in one end of said groove and a second portion forming a shoulder abutting the end face of one of said members adjacent said keyway; and a relatively rigid element connected to one of said members for compressing said resilient seal against the end of said groove, thereby expanding said seal to abut the walls of said groove and form a barrier against the passage of liquid through said groove.
Claim 2
Dependent Claim
138 words
Apparatus comprising: a first member a second member telescoped over said first member, means for forming a groove extending axially from an end face of one of said members and a relatively rigid key and the like connected to the other of said members and projecting into said groove to prevent, at least in part, relative rotation of said members. a resilient seal having a first portion receivable in one end of said groove and a second portion forming a shoulder abutting the end face of one of said members adjacent said keyway; and a relatively rigid element connected to one of said members for compressing said resilient seal against the end of said groove, thereby expanding said seal to abut the walls of said groove and form a barrier against the passage of liquid through said groove.
Claim 3
Dependent Claim
29 words
Apparatus as in claim 1 wherein said resilient seal is L shaped with one leg of the L extending into said groove and the other leg forming said shoulder.
Claim 4
Dependent Claim
25 words
Apparatus as in claim 2 wherein said leg of said resilient seal has four sides, two of which taper toward the end of said leg.
Claim 5
Dependent Claim
14 words
Apparatus as in claim 3 wherein said resilient seal has substantially equally shaped legs.
Claim 6
Dependent Claim
47 words
Apparatus as in claim 1 wherein said resilient seal is formed from material which exhibits substantial expansion when exposed to petroleum products; whereby lubricating oil passing through said groove causes said resilient element to expand against the walls of said groove and prevent further leakage of oil.
Claim 7
Dependent Claim
14 words
Apparatus as in claim 5 wherein said resilient seal is formed from ethylene propolene.
Claim 8
Dependent Claim
33 words
Apparatus as in claim 1 wherein: said first member is a shaft; said second member is a pully, said groove being formed through said pulley; said rigid element is connected to said shaft.
Claim 9
Dependent Claim
31 words
Apparatus as in claim 7 wherein said shaft has a shoulder formed adjacent the end of said groove and the shoulder of said resilient element abuts the shoulder on said shaft.
Claim 10
Dependent Claim
50 words
Apparatus as in claim 8 wherein said resilient seal is L-shaped with one leg of the L extending into the groove and the other leg abutting the shoulder on said shaft, each leg of said resilient seal having four sides, two of which taper toward the end of said leg.
Claim 11
Dependent Claim
22 words
Apparatus as in claim 9 wherein said key comprises a pin received in said shaft and projecting radially outward into said groove.
Claim 12
Dependent Claim
14 words
Apparatus as in claim 10 wherein said resilient seal is formed from ethylene propolene.
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) | 1981-06-19 | 1981-12-19 | 1982-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-19 | 1985-12-19 | 1986-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-19 | 1989-12-19 | 1990-06-20 | $7700.00 | Window Closed / Lapsed |