Internal-combustion engines – Charge forming device – Gaseous fuel and air mixer
Reexamination Certificate
2008-01-15
2008-01-15
Cronin, Stephen K. (Department: 3747)
Internal-combustion engines
Charge forming device
Gaseous fuel and air mixer
C123S525000, C123S00100A
Reexamination Certificate
active
09972449
ABSTRACT:
A fuel-control manifold has a non-integral body with at least three pieces joined together. The fuel-control manifold has a tank port, an engine supply port, a fueling port, and a shutoff valve, all in the upper body segment. The shutoff valve includes a controllable shutoff valve closure having a shutoff-valve first side in fluid flow communication with the tank port and a shutoff-valve second side in fluid flow communication with the engine supply port and with the fueling port. There are a defueling port in a lower body segment, a vent port in the upper body segment, and a defuel/vent valve in a middle body segment. The defuel/vent valve includes a controllable ball-valve defueling closure having a defueling-valve first side in fluid-flow communication with the shutoff-valve second side and a defueling-valve second side in fluid-flow communication with the defueling port, and a controllable ball-valve vent closure having a vent-valve first side in fluid-flow communication with the vent port, and a vent-valve second side in fluid-flow communication with the defueling-valve second side. The defueling closure and the vent closure are mounted on a common defuel/vent valve stem, and the defueling closure and the vent closure cannot be open at the same time.
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Circle Seal Controls, Inc.
Cronin Stephen K.
McNees Wallace & Nurick LLC
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