US4577595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston for a reciprocating piston internal combustion engine
Assignee: Rolls Royce Solutions GmbH
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Filing: 1984-07-19
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Granted: 1986-03-25
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Expires: 2004-07-19
Abstract
Abstract A piston for a reciprocating piston internal combustion engine, in which the piston top (11) is secured to the wrist pin (14) by way of two support bearings (18) independent of the piston skirt (12). The piston ring carrier (16) connected with the piston top (11) is additionally connected with the two support bearings by way of a ring-shaped support element (19). A piston with a piston top (11) results which is capable of resisting high combustion space pressures.
Inventors
- 👤 Herbert Deutschmann
- 👤 Karl Schier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:36
CPC Classifications
F; F16; F16J; F16J1/00; F16J1/10; F16J1/14; F02; F02B; F02B23/00; F02B23/02; F02B23/06; F02B23/0696; F02F; F02F3/00; F02F3/0015; F02F3/0069; F02F3/16; F02F3/20; F02F3/22; F02B3/00; F02B3/06; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
116 words
A piston for a reciprocating piston internal combustion engine, comprising a piston top, a piston skirt and wrist pin means for interconnecting the piston top and piston skirt, the piston top including a combustion space recess, a piston ring carrier means surrounding the combustion space recess and a ring-shaped extension disposed at the bottom of the combustion space recess having two support bearing means and supporting the piston top at the wrist pin means, and means for connecting the piston ring carrier means with the ring-shaped extension including a ring-shaped support element, said ring-shaped support element being clamped between the piston ring carrier means and ring-shaped extension by a nut means cooperating with the ring-shaped extension.
Claim 2
Dependent Claim
116 words
A piston for a reciprocating piston internal combustion engine, comprising a piston top, a piston skirt and wrist pin means for interconnecting the piston top and piston skirt, the piston top including a combustion space recess, a piston ring carrier means surrounding the combustion space recess and a ring-shaped extension disposed at the bottom of the combustion space recess having two support bearing means and supporting the piston top at the wrist pin means, and means for connecting the piston ring carrier means with the ring-shaped extension including a ring-shaped support element, said ring-shaped support element being clamped between the piston ring carrier means and ring-shaped extension by a nut means cooperating with the ring-shaped extension.
Claim 3
Dependent Claim
48 words
A piston according to claim 1, wherein the piston top includes an oil collecting means associated therewith for the supply of oil to a cooling oil annular space formed by the combustion space recess wall, the piston ring carrier means, the ring-shaped support element and the ring-shaped extension.
Claim 4
Dependent Claim
24 words
A piston according to claim 1, wherein the wrist pin mean includes a wrist pin and wrist pin bushings supporting therein the wrist pin.
Claim 5
Dependent Claim
157 words
A piston for a reciprocating piston internal combustion engine, comprising a piston top, a piston skirt and wrist pin means for interconnecting the piston top and piston skirt, the piston top including a combustion space recess, a piston ring carrier means surrounding the combustion space recess and a ring-shaped extension disposed at the bottom of the combustion space recess having two support bearing means and supporting the piston top at the wrist pin means, and means for connecting the piston ring carrier means with the ring-shaped extension including a ring-shaped support element, said ring-shaped support element being clamped between the piston ring carrier means and ring-shaped extension by a nut means cooperating with the ring-shaped extension, said piston top including an oil collecting means associated therewith for the supply of oil to a cooling oil annular space formed by the combustion space recess wall, the piston ring carrier means, the ring-shaped support element and the ring-shaped extension.
Claim 6
Dependent Claim
157 words
A piston for a reciprocating piston internal combustion engine, comprising a piston top, a piston skirt and wrist pin means for interconnecting the piston top and piston skirt, the piston top including a combustion space recess, a piston ring carrier means surrounding the combustion space recess and a ring-shaped extension disposed at the bottom of the combustion space recess having two support bearing means and supporting the piston top at the wrist pin means, and means for connecting the piston ring carrier means with the ring-shaped extension including a ring-shaped support element, said ring-shaped support element being clamped between the piston ring carrier means and ring-shaped extension by a nut means cooperating with the ring-shaped extension, said piston top including an oil collecting means associated therewith for the supply of oil to a cooling oil annular space formed by the combustion space recess wall, the piston ring carrier means, the ring-shaped support element and the ring-shaped extension.
Claim 7
Dependent Claim
174 words
A piston for a reciprocating piston internal combustion engine, comprising a piston top, a piston skirt and wrist pin means for interconnecting the piston top and piston skirt, the piston top including a combustion space recess, a piston ring carrier means surrounding the combustion space recess and a ring-shaped extension disposed at the bottom of the combustion space recess having two support bearing means and supporting the piston top at the wrist pin means, said wrist pin means including a wrist pin and wrist pin bushings supporting therein the wrist pin, and means for connecting the piston ring carrier means with the ring-shaped extension including a ring-shaped support element, said ring-shaped support element being clamped between the piston ring carrier means and ring-shaped extension by a nut means cooperating with the ring-shaped extension, said piston top including an oil collecting means associated therewith for the supply of oil to a cooling oil annular space formed by the combustion space recess wall, the piston ring carrier means, the ring-shaped support element and the ring-shaped extension.
Claim 8
Dependent Claim
174 words
A piston for a reciprocating piston internal combustion engine, comprising a piston top, a piston skirt and wrist pin means for interconnecting the piston top and piston skirt, the piston top including a combustion space recess, a piston ring carrier means surrounding the combustion space recess and a ring-shaped extension disposed at the bottom of the combustion space recess having two support bearing means and supporting the piston top at the wrist pin means, said wrist pin means including a wrist pin and wrist pin bushings supporting therein the wrist pin, and means for connecting the piston ring carrier means with the ring-shaped extension including a ring-shaped support element, said ring-shaped support element being clamped between the piston ring carrier means and ring-shaped extension by a nut means cooperating with the ring-shaped extension, said piston top including an oil collecting means associated therewith for the supply of oil to a cooling oil annular space formed by the combustion space recess wall, the piston ring carrier means, the ring-shaped support element and the ring-shaped extension.
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) | 1989-03-24 | 1989-09-23 | 1990-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-24 | 1993-09-23 | 1994-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-24 | 1997-09-23 | 1998-03-25 | $7700.00 | Window Closed / Lapsed |