US3800751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylinder liner with centering tabs defining coolant passages there-between
Assignee: Caterpillar Inc
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Filing: 1972-12-22
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Granted: 1974-04-02
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Expires: 1992-12-22
Abstract
Abstract An internal combustion engine comprises a block having a plurality of cylinder liners mounted therein. Interconnecting passages continuously circulate a coolant through the block and around each liner during engine operation. Each liner has a plurality of circumferentially spaced tabs formed therearound to center the liner in a cylinder bore and to define passages therebetween for communicating coolant to an upper, radial support flange seated on the block.
Inventors
- 👤 S Glassey
- 👤 A Hahn
- 👤 D Shellenbaum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:35
CPC Classifications
F; F02; F02F; F02F1/00; F02F1/02; F02F1/10; F02F1/14; F02F1/16; F02F1/166; F02B; F02B2275/00; F02B2275/14; F02B3/00; F02B3/06
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
116 words
In an internal combustion engine having a block, a head mounted on said block, a cylindrical bore formed in said block, a cylindrical liner mounted in said bore and having an upper, continuous radial flange abutting a top surface of said block in sealing engagement therewith, and interconnecting passage and chamber means defined in said block and said head and around said liner for continuously circulating a coolant therethrough during engine operation, the improvement comprising a plurality of tab means, spaced axially downwardly from said upper flange, disposed around the outer periphery of said liner in circumferentially spaced relationship to define coolant passage means therebetween for communicating coolant from said chamber means to said upper flange.
Claim 2
Dependent Claim
116 words
In an internal combustion engine having a block, a head mounted on said block, a cylindrical bore formed in said block, a cylindrical liner mounted in said bore and having an upper, continuous radial flange abutting a top surface of said block in sealing engagement therewith, and interconnecting passage and chamber means defined in said block and said head and around said liner for continuously circulating a coolant therethrough during engine operation, the improvement comprising a plurality of tab means, spaced axially downwardly from said upper flange, disposed around the outer periphery of said liner in circumferentially spaced relationship to define coolant passage means therebetween for communicating coolant from said chamber means to said upper flange.
Claim 3
Dependent Claim
18 words
The invention of claim 1 wherein said upper flange and said tab means define an annular groove therebetween.
Claim 4
Dependent Claim
42 words
The invention of claim 1 wherein said tab means are formed on said liner and have outer diameters slightly less than an inside diameter of said bore to aid in centering and locating the upper portion of said liner in said bore.
Claim 5
Dependent Claim
31 words
The invention of claim 1 further comprising a pair of gaskets and a spacer plate sandwiched between said gaskets, said gaskets and spacer plate mounted between said block and said head.
Claim 6
Dependent Claim
22 words
The invention of claim 4 wherein one of said gaskets has an annular portion extending radially inwardly to overlie said upper flange.
Claim 7
Dependent Claim
81 words
A cylinder liner adapted for use in an internal combustion engine comprising a continuous annular radial flange formed adjacent to a top of said liner to extend radially outwardly therefrom and a plurality of tab means, spaced axially downwardly from said radial flange, formed on the outer periphery of said liner in circumferentially spaced relationship therearound to define coolant passage means therebetween for communicating coolant from said chamber means to said radial flange when said liner is installed in said engine.
Claim 8
Dependent Claim
81 words
A cylinder liner adapted for use in an internal combustion engine comprising a continuous annular radial flange formed adjacent to a top of said liner to extend radially outwardly therefrom and a plurality of tab means, spaced axially downwardly from said radial flange, formed on the outer periphery of said liner in circumferentially spaced relationship therearound to define coolant passage means therebetween for communicating coolant from said chamber means to said radial flange when said liner is installed in said engine.
Claim 9
Dependent Claim
18 words
The liner of claim 6 wherein said radial flange and said tab means define an annular groove therebetween.
Claim 10
Dependent Claim
22 words
The liner of claim 6 wherein said tab means have outer diameters slightly less than an outside diameter of said radial flange.
Claim 11
Dependent Claim
18 words
The liner of claim 6 wherein four of said tab means are equally spaced circumferentially about said liner.
Claim 12
Dependent Claim
28 words
The liner of claim 9 wherein the circumferential lengths of each of said coolant passage means and said tab means are at least approximately equal to each other.
References Cited (Backward Citations)
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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) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |