Operator carried power tool having a four-cycle engine and an en

Details Operator carried power tool having a four-cycle engine and an en Operator carried power tool having a four-cycle engine and an en

1998-02-24

1999-09-14

Kamen, Noah P.

Internal-combustion engines

Lubricators

Crankcase, pressure control

123 9033, 123311, 184 111, 30276, F01M 100

Patent

active

059505907

ABSTRACT:
An engine powered hand-held power tool and engine lubrication method is provided, the power tool being 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 has a lightweight aluminum alloy engine block having a cylindrical bore and an enclosed oil reservoir formed therein. A crankshaft is rotatably mounted in 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. An oil splasher driven by the crankshaft intermittently engages 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 and exhaust ports and cooperating intake and exhaust valves. A lightweight, high-powered engine is thereby provided having relatively low HC and CO emissions.

REFERENCES:
patent: 2559134 (1951-07-01), Steele
patent: 3757882 (1973-09-01), Honda
patent: 4391041 (1983-07-01), Porter-Bennett
patent: 4563986 (1986-01-01), Nakano
patent: 4688529 (1987-08-01), Mitadera et al.
patent: 4817738 (1989-04-01), Dorner et al.
patent: 4969434 (1990-11-01), Nakagawa
W. Beitz and K.-H. Kuttner, Engineering Manual, 1983, pp. 1-4.

Affiliated with

Also associated with

Rating

Operator carried power tool having a four-cycle engine and an en does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Operator carried power tool having a four-cycle engine and an en, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Operator carried power tool having a four-cycle engine and an en will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1498838