Internal combustion engine for a portable handheld work apparatu

Details Internal combustion engine for a portable handheld work apparatu Internal combustion engine for a portable handheld work apparatu

1990-11-01

1991-11-19

Okonsky, David A.

Internal-combustion engines

Multiple cylinder

123 73C, F02M 2900

Patent

active

050657089

ABSTRACT:
The invention is directed to an internal combustion engine for a portable handheld work apparatus with an intake pipe or induction elbow being attached to the cylinder. The engine can be a two-stroke engine having an inlet opening in the cylinder for the combustion mixture. A cylinder flange is provided at the inlet opening for connecting the induction elbow for conducting the combustion mixture. The induction elbow is made of rubber-elastic material and fits over the cylinder flange in a form-tight manner and is fixed thereto. The connecting end of the induction elbow is provided with an inner annular shoulder which engages an outer annular slot of the cylinder flange which is adapted with respect to volume and is reliably held by a clamp ring having a fixed diameter. The rubber-elastic material of the connecting end is compressed in the annular slot by the clamp ring thereby seating the induction elbow on the cylinder flange in such a manner that it cannot become disconnected.

REFERENCES:
patent: 3975468 (1976-08-01), Tuckey
patent: 4228770 (1980-10-01), Boyesen
patent: 4474145 (1984-10-01), Boyesen
patent: 4711225 (1987-12-01), Holderle et al.
patent: 4819589 (1989-04-01), Nagashima
patent: 4835866 (1989-06-01), Nagashima
patent: 4890586 (1990-01-01), Fujii et al.
patent: 4903644 (1990-02-01), Groger et al.
patent: 4971008 (1990-11-01), Morishita

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