Dual shut-off valve for two-cycle engines

Internal-combustion engines – Two-cycle – Rear compression

Reexamination Certificate

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Details

C123S19800E, C137S001000, C137S595000

Reexamination Certificate

active

06886508

ABSTRACT:
A dual shut-off valve includes a valve body having a first inlet passage for communicating with the fuel supply line, a second inlet passage for communicating with the oil supply line, a first outlet passage and a second outlet passage. A first valve ball has a center passage and is rotatable between a first valve open position and a first valve closed position. A second valve ball has a center passage and is rotatable between a second valve open position and a second valve closed position. A shaft is coupled between the first valve ball and the second valve ball for rotating the first valve ball between the first valve open and closed positions and simultaneously rotating the second valve ball between the second valve open and closed positions. A handle can be used to rotate the shaft.

REFERENCES:
patent: 2523937 (1950-09-01), Barkley
patent: 3234958 (1966-02-01), Butters
patent: 3913551 (1975-10-01), Shaver
patent: 4084657 (1978-04-01), Bradley et al.
patent: 4114587 (1978-09-01), Amano et al.
patent: 4911202 (1990-03-01), Nelson
patent: 6206028 (2001-03-01), Holden et al.

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