Patent US4370809A successfully refreshed from Google Patents.
US4370809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power chain saw
Assignee: Kioritz Corp
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Filing: 1981-03-24
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Granted: 1983-02-01
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Expires: 2001-03-24
Abstract
Abstract A power chain saw comprises a cylinder block and a crank-case having a forwardly extending housing formed integrally therewith, a carburetor is incorporated into the housing and a main handle is located on the power unit on its upper side and extends longitudinally between the rear end and the forward upper portion of the power unit.
Inventors
- 👤 Hiroshi Takahashi
- 👤 Masatoshi Satoh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:49
CPC Classifications
B; B27; B27B; B27B17/00; B27B17/0008
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
74 words
A power chain saw comprising a power unit including a crank-case, a cylinder block, a forwardly extending housing formed integrally with said crank-case and having a space defined thereof, a carburetor disposed in the space and connected to said crank-case in communication with its interior, and a main handle positioned on the power unit on its upper side and extending longitudinally between the rear end and the forward upper portion of the power unit.
Claim 2
Dependent Claim
74 words
A power chain saw comprising a power unit including a crank-case, a cylinder block, a forwardly extending housing formed integrally with said crank-case and having a space defined thereof, a carburetor disposed in the space and connected to said crank-case in communication with its interior, and a main handle positioned on the power unit on its upper side and extending longitudinally between the rear end and the forward upper portion of the power unit.
Claim 3
Dependent Claim
35 words
A power chain saw according to claim 1 wherein said housing has its forwardly opened end and an apertured front cover and an air filter are detachably secured to said opened end of the housing.
Claim 4
Dependent Claim
49 words
A power chain saw according to claim 1 wherein said space of the housing has upper and lower sections, said carburetor is disposed in the upper section of said space and a fuel tank is disposed in said lower section of said space in fluid communication with said carburetor.
Claim 5
Dependent Claim
31 words
A power chain saw according to claim 1 wherein said main handle is formed integrally with an engine cover surrounding the upper portion and the rear end of said cylinder block.
Claim 6
Dependent Claim
28 words
A power chain saw according to claim 1 wherein said crank-case is provided with a lubricating oil tank formed integrally therewith and extending rearwardly below said cylinder block.
Claim 7
Dependent Claim
33 words
A power chain saw according to claim 4 wherein said engine cover is secured to said crank-case and said main handle is secured at its forward end to said housing of said crank-case.
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) | 1986-01-31 | 1986-08-02 | 1987-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-31 | 1990-08-02 | 1991-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-31 | 1994-08-02 | 1995-02-01 | $7700.00 | Window Closed / Lapsed |