Dispensing – With recorder – register – indicator – signal or exhibitor – Position or extent of motion indicator
Reexamination Certificate
2005-11-01
2005-11-01
Jacyna, J. Casimer (Department: 3751)
Dispensing
With recorder, register, indicator, signal or exhibitor
Position or extent of motion indicator
C137S553000, C137S559000, C141S094000
Reexamination Certificate
active
06959837
ABSTRACT:
A dual piston/poppet valve in a fuel dispenser works with a two-stage valve to help eliminate errors from an inferential flow meter. When the two-stage valve opens partially, a secondary fuel path is opened in the dual piston/poppet valve. A sensor detects the opening of the secondary fuel path and reports its opening to a control system. The two-stage valve opens fully and a primary fuel path is opened concurrently. During transaction completion, the two-stage valve partially closes, resulting in the closing of the primary fuel path. When the two-stage valve closes completely, the secondary fuel path closes. The sensor detects the closing of the secondary fuel path and reports the closing to the control system. Based on the outputs of the sensor, the control system accepts or declines input from a flow meter.
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“Standard and Safety, Power-Operated Dispensing Devices For Petroleum Products”, Underwriters Laboratories Inc., UL 87, Ninth Edition, 1990, pp. 9-10.
“Standard and Safety, Power-Operated Pumps”, Underwriters Laboratories Inc., UL 79, 1981, p. 8.
Nanaji Seifollah S.
Shermer William P.
Gilbarco Inc.
Jacyna J. Casimer
Withrow & Terranova , PLLC
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