Internal combustion engine-driven working machine provided...

Details Internal combustion engine-driven working machine provided... Internal combustion engine-driven working machine provided...

2006-02-07

2006-02-07

Kamen, Noah P. (Department: 3747)

Internal-combustion engines

Two-cycle

Rear compression

C123S19800E

Reexamination Certificate

active

06994059

ABSTRACT:
A working machine, particularly an internal combustion engine-driven tamper for compacting soil comprises a tamping system, which is driven by the internal combustion engine and which is provided with an oil lubrication. The enclosure surrounding the tamping system comprises a small opening, which is situated downstream from an air filter and which leads into an air induction channel of the internal combustion engine. The cross-section of the opening is dimensioned so that it enables an equalization of pressure between the tamping system and the surrounding area and allows oil to travel from the tamping system and into the air induction channel of the engine. Oil for lubricating can be supplied to the engine via the opening. The opening is also suited for equalizing pressure which is particularly necessary when the tamping system and its enclosure heat up.

REFERENCES:
patent: 3286790 (1966-11-01), Kestel
patent: 3642077 (1972-02-01), Bayard
patent: 4726330 (1988-02-01), Shiga
patent: 6161510 (2000-12-01), Ishikawa et al.
patent: 1 031 738 (1958-06-01), None
patent: 1 208 234 (1965-12-01), None
patent: 2 121 064 (1972-11-01), None
patent: 2 332 107 (1976-11-01), None

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