US4383478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rain cap with pivot support means
Assignee: MERCURY METAL PRODUCTS Inc VILLAGE OF
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Filing: 1981-07-29
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Granted: 1983-05-17
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Expires: 2001-07-29
Abstract
Abstract A pivotal connection between a gravity-actuated protective cover and a bracket structure for supporting the cover device on an exhaust conduit includes a center spacer that has a chrome hardened peripheral surface and is held between a pair of ears of the bracket by a conventional screw. A bearing sleeve or bushing encircles the spacer and is secured to the protective cover and has at least an internal surface permanently impregnated with a lubricant.
Inventors
- 👤 W. Richard Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:01
CPC Classifications
F; F23; F23J; F23J13/00; F23J13/08; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/4984
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
165 words
In a gravity-actuated protective cover device adapted to be secured to an upstanding exhaust conduit of an engine open at its upper end to prevent entry of undesirable material during inoperative stages of said engine, said cover member including a looped band portion encircling said conduit and having spaced ears on opposite ends with tightening means extending through said ears to secure said looped band on said exhaust conduit, a cover member and balance arm supported on said ears, and pivot support means pivotally supporting said cover member and balance arm between said ears, the improvement of said pivot support means comprising a spacer between said ears, fastener means securing said spacer between said ears, and a sleeve carried by said cover member and balance arm and rotatable on said spacer, said spacer having a hardened chrome peripheral surface, and said sleeve having a permanent lubricant impregnated inner surface in engagement with said peripheral surface to extend the service life of said pivot support means.
Claim 2
Dependent Claim
165 words
In a gravity-actuated protective cover device adapted to be secured to an upstanding exhaust conduit of an engine open at its upper end to prevent entry of undesirable material during inoperative stages of said engine, said cover member including a looped band portion encircling said conduit and having spaced ears on opposite ends with tightening means extending through said ears to secure said looped band on said exhaust conduit, a cover member and balance arm supported on said ears, and pivot support means pivotally supporting said cover member and balance arm between said ears, the improvement of said pivot support means comprising a spacer between said ears, fastener means securing said spacer between said ears, and a sleeve carried by said cover member and balance arm and rotatable on said spacer, said spacer having a hardened chrome peripheral surface, and said sleeve having a permanent lubricant impregnated inner surface in engagement with said peripheral surface to extend the service life of said pivot support means.
Claim 3
Dependent Claim
30 words
A protective cover device as defined in claim 1 in which said spacer has a metallic base with a hardened chrome peripheral layer having a minimum thickness of 0.0002 inches.
Claim 4
Dependent Claim
18 words
A protective cover device as defined in claim 1 in which said sleeve is a sintered iron material.
References Cited (Backward Citations)
US1987415A
Cited
US2078076A
Cited
US2895033A
Cited
US2983216A
Cited
US4059045A
Cited
US4255928A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-05-16 | 1986-11-15 | 1987-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-16 | 1990-11-15 | 1991-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-16 | 1994-11-15 | 1995-05-17 | $7700.00 | Window Closed / Lapsed |