US3554172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reed block crankcase induction for two-cycle engine
Assignee: Brunswick Corp
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Filing: 1969-10-01
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Granted: 1971-01-12
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Expires: 1989-10-01
Abstract
Abstract A V-type reed block extends circumferentially of the crankcase in excess of 60* and is curved to conserve space requirements within the crankcase chamber.
Inventors
- 👤 Elmer Carl Kiekhaefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:57
CPC Classifications
F; F02; F02B; F02B75/00; F02B75/16; F02B75/18; F02B75/20; F01; F01L; F01L3/00; F01L3/20; F01L3/205; F02B75/02; F02B2075/022; F02B2075/025; F02B2075/1804; F02B2075/1808; F02B61/00; F02B61/04; F02B61/045; F02B75/007
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
81 words
In a two-cycle engine having a crankshaft, a crankcase and an induction passage, the improvement comprising a curved V-shaped reed block extending on a radius from the crankshaft axis, the sidewalls of said block being angularly disposed to present an apex directed toward the crankshaft, said reed block having a series of circumferentially spaced openings in each sidewall thereof and corresponding individual reeds over each opening for controlling the induction of gases through said openings into the crankcase from said passage.
Claim 2
Dependent Claim
81 words
In a two-cycle engine having a crankshaft, a crankcase and an induction passage, the improvement comprising a curved V-shaped reed block extending on a radius from the crankshaft axis, the sidewalls of said block being angularly disposed to present an apex directed toward the crankshaft, said reed block having a series of circumferentially spaced openings in each sidewall thereof and corresponding individual reeds over each opening for controlling the induction of gases through said openings into the crankcase from said passage.
Claim 3
Dependent Claim
22 words
The construction of claim 1 wherein each said reed is secured to said block at the end farthest from the crankshaft axis.
Claim 4
Dependent Claim
20 words
The construction of claim 1 in which said reed block closes a slot in the back side of the crankcase.
Claim 5
Dependent Claim
32 words
The construction of claim 1 in which said reed block extends for at least 60* and is disposed in recess in the crank casing with the reeds extending radially of the crankshaft.
Claim 6
Dependent Claim
22 words
The construction of claim 4 wherein each said reed is secured to said block at the end farthest from the crankshaft axis.
Claim 7
Dependent Claim
20 words
The construction of claim 4 in which said reed block closes a slot in the back side of the crankcase.
Claim 8
Dependent Claim
31 words
The construction of claim 1 in which said reed block extends for approximately 180*and is disposed in a recess in the crank casing with the reeds extending radially of the crankshaft.
Claim 9
Dependent Claim
22 words
The construction of claim 7 wherein each said reed is secured to said block at the end farthest from the crankshaft axis.
Claim 10
Dependent Claim
20 words
The construction of claim 7 in which said reed block closes a slot in the back side of the crankcase.
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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |