US5152259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylinder head for internal combustion engine
Assignee: Individual
•
Filing: 1991-09-05
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Granted: 1992-10-06
•
Expires: 2011-09-05
Abstract
Abstract A cylinder head for attachment to a block assembly of an internal combustion engine as a replacement for a conventional cylinder head and its conventional valves and associated mechanical components. The cylinder head includes at least one longitudinally disposed spool with ports therein. When the spool is rotated the ports are rotated in a timed manner to be in communication with fluid intake openings and exhaust openings to permit the inflow of fuel into a cylinder in the block assembly and the exit therefrom of exhuast gasses. The use of a spool with ports eliminates the need for conventional valves, thereby permitting a lighter and smaller cylinder head assembly, as well as enables an engine to operate more efficiently at higher than conventional RPMs.
Inventors
- 👤 Darrell W. Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:40
CPC Classifications
F; F01; F01L; F01L7/00; F01L7/02; F01L7/026; F02; F02F; F02F1/00; F02F1/24; F02F1/26; F02F1/36; F02F1/38; F02B; F02B1/00; F02B1/02; F02B1/04; F02B75/00; F02B75/02; F02B2075/022; F02B2075/027; F02B3/00; F02B3/06; F02F2001/244; F02F2001/245
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
276 words
A cylinder head for attachment to a block assembly having at least one cylinder bore therein, the cylinder head comprising: a cylinder head body adapted for attachment to the block assembly and having at least one side-entry fluid intake opening in communication with the cylinder bore, and having at least one side-exit exhaust fluid opening in communication with the cylinderbore; the cylinder head body including two parallel spool cavities, an intake spool cavity in communication with the fluid intake opening and an exhaust spool cavity in communication with the exhaust fluid opening; an intake spool mounted for axial rotation within the intake spool cavity, and including at least one intake port in communication through an internal longitudinal channel with a spaced second intake port having a plurality of openings; an exhaust spool mounted for axial rotation within the exhaust spool cavity, and including at least one exhaust port in communication through an internal longitudinal channel with a spaced second exhaust port having a plurality of openings; timing means for rotating the intake spool and the exhaust spool; and the at least one intake port and the at least one exhaust port being spaced and arranged so that upon axial rotation of the intake spool and the exhaust spool, fluid is alternately prevented and permitted to pass from the at least one fluid intake opening, pumped through the second intake port and channel, into the at least one intake port and into the cylinder bore, and to pass from the cylinder bore into the at least one exhaust port, pumped through the channel and second exhaust port, and out from the at least one exhaust fluid opening.
Claim 2
Dependent Claim
276 words
A cylinder head for attachment to a block assembly having at least one cylinder bore therein, the cylinder head comprising: a cylinder head body adapted for attachment to the block assembly and having at least one side-entry fluid intake opening in communication with the cylinder bore, and having at least one side-exit exhaust fluid opening in communication with the cylinderbore; the cylinder head body including two parallel spool cavities, an intake spool cavity in communication with the fluid intake opening and an exhaust spool cavity in communication with the exhaust fluid opening; an intake spool mounted for axial rotation within the intake spool cavity, and including at least one intake port in communication through an internal longitudinal channel with a spaced second intake port having a plurality of openings; an exhaust spool mounted for axial rotation within the exhaust spool cavity, and including at least one exhaust port in communication through an internal longitudinal channel with a spaced second exhaust port having a plurality of openings; timing means for rotating the intake spool and the exhaust spool; and the at least one intake port and the at least one exhaust port being spaced and arranged so that upon axial rotation of the intake spool and the exhaust spool, fluid is alternately prevented and permitted to pass from the at least one fluid intake opening, pumped through the second intake port and channel, into the at least one intake port and into the cylinder bore, and to pass from the cylinder bore into the at least one exhaust port, pumped through the channel and second exhaust port, and out from the at least one exhaust fluid opening.
Claim 3
Dependent Claim
61 words
A cylinder head of claim 1 wherein the second intake port is in communication with two adjacent cylinder bores through the intake channel and spaced intake ports arranged one above each cylinder bore; and the second exhaust port is in communication with the two adjacent cylinder bores through the exhaust channel and spaced exhaust ports arranged one above each cylinder bore.
Claim 4
Dependent Claim
22 words
A cylinder head of claim 1 wherein the cylinder head body includes channels for internal passage of coolant fluid and lubricating fluid.
Claim 5
Dependent Claim
44 words
A cylinder head of claim 1 and including at least one spark plug bore per cylinder bore for receiving a spark plug, and the at least one spark plug bore being located on the longitudinal and transverse center line of the cylinder head body.
Claim 6
Dependent Claim
15 words
A cylinder head of claim 1 and including means for attachment to the block assembly.
Claim 7
Dependent Claim
43 words
A cylinder head of claim 1 wherein the cylinder head body comprises an upper section and a lower section with the spool cavity being formed by indentations in an underside of the upper section and indentations in a topside of the lower section.
Claim 8
Dependent Claim
43 words
A cylinder head of claim 1 and including sealing means in the cylinder head body extending into the spool cavities for preventing leakage of fluids into or from areas adjacent the at least one intake port and the at least one exhaust port.
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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) | 1995-10-06 | 1996-04-06 | 1996-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-06 | 2000-04-06 | 2000-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-06 | 2004-04-06 | 2004-10-06 | $7700.00 | Window Closed / Lapsed |