Patent US5207188A successfully refreshed from Google Patents.
US5207188A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylinder for multi-cylinder type engine
Assignee: TPR Co Ltd
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Filing: 1991-11-27
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Granted: 1993-05-04
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Expires: 2011-11-27
Abstract
Abstract Each of a plurality of cylinder liners has a cooling liquid groove at its outer circumferential surface and has a flat surface over an entire axial length at a part of the outer circumferential surface. The cylinder liners are inserted in bores of a cylinder block with flat surfaces of adjacent liners abutting each other and the grooves at the flat surfaces being coincident with each other.
Inventors
- 👤 Fujio Hama
- 👤 Kenichi Harashina
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:37
CPC Classifications
F; F01; F01P; F01P3/00; F01P3/02; F02; F02F; F02F1/00; F02F1/02; F02F1/10; F02F1/108; F02F1/14; F02F1/16; F02B; F02B75/00; F02B75/16; F02B75/18; F02B2075/1804; F02B2075/1816
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
136 words
Cylinders for a multi-cylinder type engine comprising a plurality of cylinder liners, each liner having cooling liquid grooves at an outer circumferential surface and having a flat surface at a part of the outer circumferential surface, said cooling liquid grooves comprising a plurality of annular grooves and a plurality of axial grooves providing communication between the annular grooves, said axial grooves being arranged one by one between the adjoining annular grooves and alternately arranged along an axial direction at locations spaced apart by 180° in a circumferential direction, and a cylinder block having bores for receiving said plurality of cylinder lines, said plurality of cylinder liners being inserted into said bores and being arranged with said flat surfaces abutting each other, so that the cooling liquid grooves at said flat surfaces are coincident with each other.
Claim 2
Dependent Claim
136 words
Cylinders for a multi-cylinder type engine comprising a plurality of cylinder liners, each liner having cooling liquid grooves at an outer circumferential surface and having a flat surface at a part of the outer circumferential surface, said cooling liquid grooves comprising a plurality of annular grooves and a plurality of axial grooves providing communication between the annular grooves, said axial grooves being arranged one by one between the adjoining annular grooves and alternately arranged along an axial direction at locations spaced apart by 180° in a circumferential direction, and a cylinder block having bores for receiving said plurality of cylinder lines, said plurality of cylinder liners being inserted into said bores and being arranged with said flat surfaces abutting each other, so that the cooling liquid grooves at said flat surfaces are coincident with each other.
Claim 3
Dependent Claim
167 words
Cylinders for a multi-cylinder engine comprising a plurality of cylinder liners, each liner having cooling liquid grooves at an outer circumferential surface and having a flat surface at a part of the outer circumferential surface, said cooling liquid grooves comprising a plurality of annular grooves, said plurality of annular grooves being divided into a plurality of groups of annular grooves axially spaced along the cylinder, each of said groups of annular grooves having two axial grooves providing communication between the annular grooves of the group and forming, respectively, an outlet and an inlet for a cooling liquid for the group, and an outlet of each group communicating in series with an inlet in an adjoining group of annular grooves, and a cylinder block having bores for receiving said plurality of cylinder liners, said plurality of cylinder liners being inserted into said bores and being arranged with said flat surfaces abutting each other, so that the cooling liquid grooves at said flat surfaces are coincident with each other.
Claim 4
Dependent Claim
167 words
Cylinders for a multi-cylinder engine comprising a plurality of cylinder liners, each liner having cooling liquid grooves at an outer circumferential surface and having a flat surface at a part of the outer circumferential surface, said cooling liquid grooves comprising a plurality of annular grooves, said plurality of annular grooves being divided into a plurality of groups of annular grooves axially spaced along the cylinder, each of said groups of annular grooves having two axial grooves providing communication between the annular grooves of the group and forming, respectively, an outlet and an inlet for a cooling liquid for the group, and an outlet of each group communicating in series with an inlet in an adjoining group of annular grooves, and a cylinder block having bores for receiving said plurality of cylinder liners, said plurality of cylinder liners being inserted into said bores and being arranged with said flat surfaces abutting each other, so that the cooling liquid grooves at said flat surfaces are coincident with each other.
Claim 5
Dependent Claim
45 words
Cylinders for a multi-cylinder type engine according to claim 2, wherein a total sectional area of the annular grooves in each group of annular grooves decreases from a lower part of each liner toward an upper part in an axial direction of the cylinder liner.
Claim 6
Dependent Claim
46 words
Cylinders for a multi-cylinder type engine according to claim 3, wherein an outer circumferential surface at a position above an uppermost group of annular grooves is provided with one annular groove communicating with the axial groove forming the inlet of said uppermost group of annular grooves.
Claim 7
Dependent Claim
47 words
A cylinder for a multi-cylinder type engine according to claim 2, wherein an outer circumferential surface at a position above an uppermost group of annular grooves is provided with one annular groove communicating with the axial groove forming the inlet of said uppermost group of annular grooves.
Claim 8
Dependent Claim
27 words
Cylinders for a multi-channel type engine according to claims 2, 3, 4 or 5, wherein the number of said groups of annular grooves is two ore more.
Claim 9
Dependent Claim
31 words
Cylinders for a multi-channel type engine according to claims 1, 2, 3, 4 or 5, wherein said flat surface is arranged at a circumferential position spaced apart from said axial grooves.
Claim 10
Dependent Claim
42 words
Cylinders for a multi-channel type engine according to claims 1, 2, 3, 4 or 5, wherein a sectional area of the annular groove at a location of said flat surface is smaller than that of the annular groove at other circumferential locations.
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) | 1996-05-03 | 1996-11-02 | 1997-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-05-03 | 2000-11-02 | 2001-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-05-03 | 2004-11-02 | 2005-05-04 | $7700.00 | Window Closed / Lapsed |