Operator carried power tool having a four-cycle engine

Details Operator carried power tool having a four-cycle engine Operator carried power tool having a four-cycle engine

1997-07-16

1998-04-14

Kamen, Noah P.

Internal-combustion engines

Frame construction

Horizontal cylinder

30276, 123 9033, 123311, 184 111, F02F 700

Patent

active

057380627

ABSTRACT:
A hand held powered tool is provided which is intended to be carried by an operator during use. The power tool has a frame, including a handle to be grasped by the operator, an implement affixed to the frame having a rotary input member and a small four-cycle lightweight internal combustion engine attached to the frame for driving the implement. The four-cycle engine is made up of a lightweight aluminum engine block having a cylindrical bore and an oil reservoir. A crankshaft is journaled to the engine block for rotation about a crankshaft axis. A piston reciprocates within the bore and is connected to the crankshaft by a connecting rod having an oil splasher formed thereon for intermittently engaging the oil within the enclosed oil reservoir to splash lubricate the engine. The engine is provided with a cylinder head assembly defining a compact combustion chamber having a pair of overhead intake exhaust ports cooperating intake and exhaust valves. A lightweight high powered engine is thereby provided having relatively low HC and CO emissions.

REFERENCES:
patent: 2980089 (1961-04-01), Sampietro
patent: 4031622 (1977-06-01), Alexander
patent: 4100909 (1978-07-01), Nakano et al.
patent: 4380216 (1983-04-01), Kandler
patent: 4404936 (1983-09-01), Tatebe et al.
patent: 4430906 (1984-02-01), Holtzberg et al.
patent: 4485770 (1984-12-01), Saka et al.
patent: 4508068 (1985-04-01), Tuggle et al.
patent: 4510897 (1985-04-01), Hatz et al.
patent: 4601267 (1986-07-01), Kronich
patent: 4649874 (1987-03-01), Sonoda et al.
patent: 4662322 (1987-05-01), Tamba et al.
patent: 4662323 (1987-05-01), Moriya
patent: 4674146 (1987-06-01), Tuggle et al.
patent: 4716861 (1988-01-01), Fujikawa et al.
patent: 4736717 (1988-04-01), Fujikawa et al.
patent: 4762098 (1988-08-01), Tamba et al.
patent: 4841929 (1989-06-01), Tuggle et al.
patent: 4846123 (1989-07-01), Bolton, Jr.
patent: 4848846 (1989-07-01), Yamada et al.
patent: 4881496 (1989-11-01), Kronich
patent: 4936271 (1990-06-01), Nagashima et al.
patent: 4969434 (1990-11-01), Nakagawa
patent: 5035586 (1991-07-01), Sadler et al.
patent: 5058542 (1991-10-01), Grayson et al.
patent: 5060605 (1991-10-01), Yamazaki
patent: 5174255 (1992-12-01), Collins et al.
Honda Generator Manual (1965) including translation.
Honda 4-Cycle Generator Catalog (1993).
Popular Science, Mar. 1993, "The Little Engine That Could", by Judith Anne Gunther, pp. 90-92 and 96.

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