Four-cycle combustion engine, particularly for lawnmowers

Details Four-cycle combustion engine, particularly for lawnmowers Four-cycle combustion engine, particularly for lawnmowers

2007-05-01

2007-05-01

Cronin, Stephen K. (Department: 3747)

Internal-combustion engines

Poppet valve operating mechanism

Overhead camshaft

C123S090310

Reexamination Certificate

active

11223126

ABSTRACT:
The invention relates to a four-stroke internal combustion engine (10), especially for lawnmowers, comprising at least one cylinder for a reciprocating piston which acts via a connecting rod on a crankshaft (12) and at least one overhead camshaft (16) for driving overhead gas exchange valves and a transmission (60) between crankshaft (12) and camshaft (16) with a motion plane within a transmission chamber (70) which is perpendicular to the crankshaft axis (14). It is proposed that at least one camshaft bearing (91) for bearing the camshaft (16) is configured as a tunnel bearing, with preferably one bore (93) of a bearing block (92) of at least one camshaft bearing (91) comprising substantially at least one recess (94) corresponding to the shape of the cam. The internal combustion engine (10) is easy to make and comes with reliable lubrication for the engine.

REFERENCES:
patent: 4441243 (1984-04-01), Stojek
patent: 5000126 (1991-03-01), Isaka et al.
patent: 5447127 (1995-09-01), Luck et al.
patent: 4015610 (1990-11-01), None
patent: 0487960 (1992-06-01), None

Affiliated with

Also associated with

Rating

Four-cycle combustion engine, particularly for lawnmowers does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Four-cycle combustion engine, particularly for lawnmowers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Four-cycle combustion engine, particularly for lawnmowers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3724982