Patent US4741669A successfully refreshed from Google Patents.
US4741669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shroud
Assignee: Individual
•
Filing: 1987-02-13
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Granted: 1988-05-03
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Expires: 2007-02-13
Abstract
Abstract An improved radiator shroud consists of a main upper-shroud and a semicircular lower-shroud to be attached to the cut-off portion of the cylindrical opening of the main upper-shroud. The lower-shroud is provided with more than two U-shaped stoppers along its outer periphery, the U-shaped stoppers being interlocked into the slits made along the outer periphery of the cut-off portion.
Inventors
- 👤 Tatsuji Shimokawabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:10
CPC Classifications
F; F01; F01P; F01P5/00; F01P5/02; F01P5/06; F04; F04D; F04D29/00; F04D29/60; F04D29/64; F04D29/644; F04D29/646; Y; Y10; Y10T; Y10T24/00; Y10T24/45; Y10T24/45225; Y10T24/45471; Y10T24/45524; Y10T24/45529
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
116 words
An improved shroud consisting of a main upper-shroud and a semicircular lower-shroud to be attached to the cut-off portion of the cylindrical opening of said main upper-shroud, wherein said lower-shroud is provided with more than two integral U-shaped stoppers extending from the outer periphery thereof, said U-shaped stoppers being releasably interlocked into the slits made along the outer periphery of said cut-off portion including a singular barb-shaped protrusion on an outer periphery of each of said U-shaped stoppers for providing a positive locking between said U-shaped stoppers and said main upper shroud, said U-shaped stopper being releasably compressible on either of opposing sides of said slits for removal of said U-shaped stoppers from said interlocking relationship.
Claim 2
Dependent Claim
116 words
An improved shroud consisting of a main upper-shroud and a semicircular lower-shroud to be attached to the cut-off portion of the cylindrical opening of said main upper-shroud, wherein said lower-shroud is provided with more than two integral U-shaped stoppers extending from the outer periphery thereof, said U-shaped stoppers being releasably interlocked into the slits made along the outer periphery of said cut-off portion including a singular barb-shaped protrusion on an outer periphery of each of said U-shaped stoppers for providing a positive locking between said U-shaped stoppers and said main upper shroud, said U-shaped stopper being releasably compressible on either of opposing sides of said slits for removal of said U-shaped stoppers from said interlocking relationship.
Claim 3
Dependent Claim
50 words
An improved shroud as claimed in claim 1, wherein said main upper-shroud is provided with a protrusion, said lower-shroud being provided with a corresponding aperture, said protrusion being pushed into said aperture to form an interlocking relationship in addition to the interlocking relationship of said U-shaped stoppers and said slits.
References Cited (Backward Citations)
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Cited
US2863634A
Cited
US3051952A
Cited
GB968914A
Cited
US3635285A
Cited
DE2250541A1
Cited
US4018297A
Cited
US4353680A
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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) | 1991-05-03 | 1991-11-02 | 1992-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-03 | 1995-11-02 | 1996-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-03 | 1999-11-02 | 2000-05-03 | $7700.00 | Window Closed / Lapsed |