US3586338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combustion seal for engines
Assignee: Mack Trucks Inc
•
Filing: 1969-05-29
•
Granted: 1971-06-22
•
Expires: 1989-05-29
Abstract
Abstract To provide a durable seal for combustion gases, a cylinder sleeve (or block) is formed with an annular bead preferably chamfered on its outer edge and a cylinder head is formed with an annular groove. A fire ring made of a deformable metal is placed on top of the bead so that when the cylinder head is clamped to the block, the fire ring is extruded by the bead on the cylinder sleeve (or block) into the groove on the cylinder head. A separate gasket body provided in the block to head joint provides a seal for the coolant and oil passages therebetween.
Inventors
- 👤 Ernest P Miklau
- 👤 John R Crowe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:15
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/10; F16J15/12; F16J15/121; F16J15/122; F16J15/123
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
107 words
A combustion seal for each cylinder of an engine including a cylinder block and cylinder head comprising an annular bead on the block adjacent the periphery of the cylinder opening, an annular groove on the head having about the same diameter as the bead and a deformable metal ring disposed between the bead and groove and extending beyond the edges of the groove so that clamping the head to the block causes the bead to extrude a portion of the ring into the groove to form a positive interlocking therewith and also causes the bead to form a groove in the ring for receiving the bead therein.
Claim 2
Dependent Claim
107 words
A combustion seal for each cylinder of an engine including a cylinder block and cylinder head comprising an annular bead on the block adjacent the periphery of the cylinder opening, an annular groove on the head having about the same diameter as the bead and a deformable metal ring disposed between the bead and groove and extending beyond the edges of the groove so that clamping the head to the block causes the bead to extrude a portion of the ring into the groove to form a positive interlocking therewith and also causes the bead to form a groove in the ring for receiving the bead therein.
Claim 3
Dependent Claim
18 words
A combustion seal as defined in claim 1, wherein the outer lateral surface of the bead is chamfered.
Claim 4
Dependent Claim
92 words
A combustion seal for each cylinder of an engine including a cylinder block and a cylinder head comprising an annular bead on the outer surface of a sleeve received in the cylinder, an annular groove in the head having about the same diameter as the bead and a deformable metal ring disposed between the bead and groove and extending beyond the edges of the groove so that clamping the head to the block causes the bead to extrude a portion of the ring into the groove to form a positive interlock therewith.
Claim 5
Dependent Claim
92 words
A combustion seal for each cylinder of an engine including a cylinder block and a cylinder head comprising an annular bead on the outer surface of a sleeve received in the cylinder, an annular groove in the head having about the same diameter as the bead and a deformable metal ring disposed between the bead and groove and extending beyond the edges of the groove so that clamping the head to the block causes the bead to extrude a portion of the ring into the groove to form a positive interlock therewith.
Claim 6
Dependent Claim
33 words
A combustion seal as defined in claim 3, wherein the clamping of the head to the block also causes the bead to form a groove in the ring for receiving the bead therein.
Claim 7
Dependent Claim
30 words
A combustion seal as defined in claim 4, wherein the groove and the bead are shaped to maximize the unit loads at the edges of the bead and the groove.
Claim 8
Dependent Claim
18 words
A combustion seal as defined in claim 4, wherein the outer lateral surface of the bead is chamfered.
Claim 9
Dependent Claim
79 words
A combustion seal as defined in claim 3, including a gasket body between the block and head for sealing coolant and lubricant flowing therebetween having a plurality of openings for the passage of coolant and lubricant between the block and the head, each coolant opening being defined by grommet means mounted on the edge of the gasket body surrounding the coolant opening for increasing the unit pressure on the gasket body when the head is clamped to the body.
Claim 10
Dependent Claim
19 words
A combustion seal as defined in claim 3, wherein the extruded portion of the ring substantially fills the groove.
Claim 11
Dependent Claim
90 words
A combustion seal for each cylinder of an engine including a cylinder block and a cylinder head comprising an annular bead on the outer surface of a sleeve received in the cylinder, an annular groove in the head having about the same diameter as the bead, a deformable metal ring disposed between the bead and groove and extending beyond the edges of the groove, and means for clamping the head to the block and for extruding a portion of the ring into the groove to form a positive interlock therewith.
Claim 12
Dependent Claim
90 words
A combustion seal for each cylinder of an engine including a cylinder block and a cylinder head comprising an annular bead on the outer surface of a sleeve received in the cylinder, an annular groove in the head having about the same diameter as the bead, a deformable metal ring disposed between the bead and groove and extending beyond the edges of the groove, and means for clamping the head to the block and for extruding a portion of the ring into the groove to form a positive interlock therewith.
Claim 13
Dependent Claim
27 words
A combustion seal as defined in claim 9, wherein the clamping and extruding means comprises a plurality of threaded elements for torquing the head to the block.
Claim 14
Dependent Claim
34 words
A combustion seal as defined in claim 9, wherein the means for clamping the head to the block also forces the bead into the ring forming a groove in which the bead is imbedded.
Claim 15
Dependent Claim
30 words
A combustion seal as defined in claim 9, wherein the outer lateral surface of the bead is shaped so as to buttress the bead against forces urging it radially outwardly.
Claim 16
Dependent Claim
109 words
A combustion seal For each cylinder of an engine including a cylinder block and a cylinder head comprising an annular bead on the outer surface of a sleeve received in the cylinder, an annular groove in the head having about the same diameter as the bead, and a metal sealing ring disposed between the bead and the groove and extending beyond the edges of the groove, the sealing ring having a coined land which mates with the groove in the head and a coined groove which mates with the bead, the land and the groove being coined in the sealing ring as the head is torqued to the block.
Claim 17
Dependent Claim
109 words
A combustion seal For each cylinder of an engine including a cylinder block and a cylinder head comprising an annular bead on the outer surface of a sleeve received in the cylinder, an annular groove in the head having about the same diameter as the bead, and a metal sealing ring disposed between the bead and the groove and extending beyond the edges of the groove, the sealing ring having a coined land which mates with the groove in the head and a coined groove which mates with the bead, the land and the groove being coined in the sealing ring as the head is torqued to the block.
Claim 18
Independent Claim
65 words
A method of sealing the cylinder of an engine comprising the steps of providing an annular bead on the outer surface of a sleeve received in the cylinder, forming a groove in the head of about the same diameter as the bead, placing a deformable ring on the bead, imbedding the bead into the ring, and extruding a section of the ring into the groove.
Claim 19
Independent Claim
65 words
A method of sealing the cylinder of an engine comprising the steps of providing an annular bead on the outer surface of a sleeve received in the cylinder, forming a groove in the head of about the same diameter as the bead, placing a deformable ring on the bead, imbedding the bead into the ring, and extruding a section of the ring into the groove.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |