US3601008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine piston
Assignee: Brunswick Corp
•
Filing: 1969-09-10
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Granted: 1971-08-24
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Expires: 1989-09-10
Abstract
Abstract The baffle on the piston for a two-cycle engine has a sharp upper edge formed by an obtuse angle and a crowned top constructed to prevent overheating and destruction of the upper edge of the baffle.
Inventors
- 👤 Charles F Alexander Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:39
CPC Classifications
F; F02; F02F; F02F3/00; F02F3/28; F02B; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
84 words
A piston for a two-cycle internal combustion engine having an intake baffle thereon extending completely across a portion of the top of said piston, said baffle having a front face thereon substantially parallel to the axis of the piston for deflecting an incoming flow of gases, the improvement comprising a sharp upper edge terminating the front face of said baffle to maximize the gas separation from said baffle at said edge, said edge being formed by an obtuse angle with respect to said face.
Claim 2
Dependent Claim
84 words
A piston for a two-cycle internal combustion engine having an intake baffle thereon extending completely across a portion of the top of said piston, said baffle having a front face thereon substantially parallel to the axis of the piston for deflecting an incoming flow of gases, the improvement comprising a sharp upper edge terminating the front face of said baffle to maximize the gas separation from said baffle at said edge, said edge being formed by an obtuse angle with respect to said face.
Claim 3
Dependent Claim
19 words
The piston of claim 1 further comprising a crown portion on top of the baffle behind said sharp edge.
Claim 4
Dependent Claim
12 words
The piston claim 1 wherein said obtuse angle is less about 145*.
Claim 5
Dependent Claim
12 words
The piston of claim 1 wherein said obtuse angle is about 120*.
Claim 6
Dependent Claim
98 words
A piston for a two-cycle internal combustion engine having a baffle thereon extending completely across a portion of the top of the piston, said baffle having a front face thereon substantially parallel to the axis of the piston for deflecting an incoming flow of gases, the improvement comprising a sharp upper edge terminating the front face of said baffle to maximize the gas separation from said baffle at said edge, said edge being formed by an obtuse angle with respect to Said face at the central portion of said baffle larger than the angle at the ends thereof.
Claim 7
Dependent Claim
98 words
A piston for a two-cycle internal combustion engine having a baffle thereon extending completely across a portion of the top of the piston, said baffle having a front face thereon substantially parallel to the axis of the piston for deflecting an incoming flow of gases, the improvement comprising a sharp upper edge terminating the front face of said baffle to maximize the gas separation from said baffle at said edge, said edge being formed by an obtuse angle with respect to Said face at the central portion of said baffle larger than the angle at the ends thereof.
Claim 8
Dependent Claim
31 words
The piston of claim 5 further comprising a crown portion on top of the baffle behind said sharp edge at said central portion gradually reducing in height toward the ends thereof.
Claim 9
Dependent Claim
13 words
The piston of claim 5 wherein said obtuse angle is less than 145*.
Claim 10
Dependent Claim
12 words
The piston of claim 5 wherein said obtuse angle is about 120*.
References Cited (Backward Citations)
DE1093138B
Cited
US3292244A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-23 | 1975-02-22 | 1975-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-23 | 1979-02-22 | 1979-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-23 | 1983-02-22 | 1983-08-24 | $7700.00 | Window Closed / Lapsed |