Patent US4770130A successfully refreshed from Google Patents.
US4770130A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chain saw
Assignee: Kioritz Corp
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Filing: 1987-04-23
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Granted: 1988-09-13
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Expires: 2007-04-23
Abstract
Abstract A chain saw has an intermediate wall portion integrally formed with a body thereof for separating an internal combustion engine chamber from a carbureter chamber and a fuel tank chamber. The intermediate wall portion includes a double wall portion having a heat insulation space formed therein, and an opening portion through which the carbureter chamber communicates with the internal combustion engine chamber, the opening portion forming a seat for mounting the carbureter.
Inventors
- 👤 Akira Nagashima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 05:58
CPC Classifications
B; B27; B27B; B27B17/00; F; F01; F01P; F01P1/00; F01P1/02; F02; F02B; F02B63/00; F02B63/02; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
144 words
A chain saw characterized in having a body formed by an integral molding process; in that said body has integrally therein an internal combustion engine chamber for accommodating an internal combustion engine, a carbureter chamber integrally formed adjacent to said internal combustion engine chamber for accommodating a carbureter, and a fuel tank chamber integrally disposed below said carbureter chamber, and an intermediate wall portion integrally formed with said body in such a manner that it separates said internal combustion engine chamber from said carbureter chamber and said fuel tank chamber; and in that said intermediate wall portion includes a double wall portion having a heat insulation space formed therein, and an opening portion through which said carbureter chamber communicates with said internal combustion engine chamber, said opening portion forming a seat for mounting said carbureter and being integrally formed with said double wall portion.
Claim 2
Dependent Claim
144 words
A chain saw characterized in having a body formed by an integral molding process; in that said body has integrally therein an internal combustion engine chamber for accommodating an internal combustion engine, a carbureter chamber integrally formed adjacent to said internal combustion engine chamber for accommodating a carbureter, and a fuel tank chamber integrally disposed below said carbureter chamber, and an intermediate wall portion integrally formed with said body in such a manner that it separates said internal combustion engine chamber from said carbureter chamber and said fuel tank chamber; and in that said intermediate wall portion includes a double wall portion having a heat insulation space formed therein, and an opening portion through which said carbureter chamber communicates with said internal combustion engine chamber, said opening portion forming a seat for mounting said carbureter and being integrally formed with said double wall portion.
Claim 3
Dependent Claim
121 words
A chain saw comprising a unitary housing integrally molded of synthetic resin and having walls defining therewithin an internal combustion engine chamber for accommodating an internal combustion engine, a carbureter chamber adjacent the internal combustion engine chamber for accommodating a carbureter, and a fuel tank chamber directly below the carbureter chamber; an intermediate wall of said unitary housing constituting means to separate the internal combustion engine chamber from the carbureter chamber and the fuel tank chamber, said intermediate wall comprising a double wall portion having a heat insulation spaced molded therewithin and further having an opening passing therethrough constituting means for communicating the carburetor chamber with the internal combustion engine chamber, said opening forming a seat means for mounting said carbureter.
Claim 4
Dependent Claim
121 words
A chain saw comprising a unitary housing integrally molded of synthetic resin and having walls defining therewithin an internal combustion engine chamber for accommodating an internal combustion engine, a carbureter chamber adjacent the internal combustion engine chamber for accommodating a carbureter, and a fuel tank chamber directly below the carbureter chamber; an intermediate wall of said unitary housing constituting means to separate the internal combustion engine chamber from the carbureter chamber and the fuel tank chamber, said intermediate wall comprising a double wall portion having a heat insulation spaced molded therewithin and further having an opening passing therethrough constituting means for communicating the carburetor chamber with the internal combustion engine chamber, said opening forming a seat means for mounting said carbureter.
Claim 5
Dependent Claim
13 words
A chain saw according to claim 2 wherein said synthetic resin is nylon.
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) | 1991-09-13 | 1992-03-14 | 1992-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-13 | 1996-03-14 | 1996-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-13 | 2000-03-14 | 2000-09-13 | $7700.00 | Window Closed / Lapsed |