Novus International, Inc.

Piston Tank Corporation

Anthony Frank DeJohn

Stephen J Lorbert

Richard E Etling

Christopher Keith Duncan

Samuel J Jenkins

Philip H Allen

The present invention relates to a tank piston with an improved seal having a cap, a body attached to the periphery of the cap, a circumferential channel adjacent to the periphery of the cap and an annular seal held within the channel by an annular sheet. In one aspect of the invention the annular sheet secures the seal within the channel and is attached to the piston by a ring proximate to the periphery of the cap and a ring proximate to the back side of the circumferential channel. In another aspect of the invention the annular sheet is made from a friction reducing material and enables the piston to more easily move within the tank and subsequently extends the lifespan of the seal. Additionally, the annular sheet is fitted to the seal and attached above the front sidewall of the channel.

Tank piston with improved seal and cover

A system for transferring fluid from a filling reservoir to a receiving tank. The system includes a fluid transfer line for conveying fluid from the filling reservoir outlet to the receiving tank inlet, and couplings for selectively connecting the fluid transfer line to a filling reservoir outlet and a receiving tank inlet. The system further includes a vapor return line for conveying vapor from a receiving tank vent to a filling reservoir inlet to simultaneously prevent pressure from building in the tank and a vacuum from developing in the reservoir as fluid is transferred from the reservoir to the tank, and couplings for selectively connecting the vapor return line to the filling reservoir inlet and the receiving tank vent. In addition, the system includes a portable platform adapted for movement to a position near the filling reservoir and the receiving tank, and a pump mounted on the platform for selectively inducing fluid to travel through the fluid transfer line from the filling reservoir to the receiving tank when the reservoir outlet valve and the tank inlet valve are open. The system also includes a compressed gas source in communication with the fluid transfer line for blowing gas through the line to remove residual fluid from the line to prevent the escape of residual fluid and associated odor from the line when the fluid transfer line couplings are uncoupled from the filling reservoir outlet and the receiving tank inlet.

Fluid transfer system

Growing community of inventors

Chesterfield, MO, United States of America

Anthony Frank DeJohn