Dover Corporation

Delaware Capital Formation, Inc.

Lawrence R Blasch

Chester W Wood

Paul B Anderson

Glenn E Moore

Charles A Sunderhaus

Frank G Lamping

Jim E Kesterman

An entry fitting having a cylindrical portion and a conical portion including a seal disposed about the body of the entry fitting. An axial displacement member urges the seal along the conical portion to achieve a relatively wide range of sealing force. The entry fitting can include a shield positioned on the exterior of a sump to provide an access space for displacement of the entry fitting toward the exterior of the sump to allow removal and replacement of the seal without first having to remove backfill from the exterior of the sump.

Bulkhead fitting for underground sump

A valve assembly for automatically shutting off the flow of a pressurized liquid to a storage tank includes a cam that is rotated in response to the level of a liquid in the storage tank. A follower moves a poppet valve axially with a housing as a nonlinear function of rate of cam rotation. The poppet valve is moved to a closed position to terminate flow of a liquid to the storage tank whenever the liquid level within the storage tank reaches a predetermined level.

Storage tank shutoff valve

An emergency valve is provided to shut off the flow of fuel in the event a fuel dispenser is struck with sufficient force to rupture the fuel conduit means therefor. The valve comprises a lower housing connected to a source of pressurized fuel and an upper housing connected to conduit means which extend to a dispensing nozzle. The upper housing has a groove which defines the plane of a weakened portion. When the impacted with a relatively high lateral force, the portion of the upper housing, above the groove, will separate, or break away. A normally open, main control, flapper valve is mounted in the lower housing. A poppet check valve is mounted in the upper housing. When the separable portion of the upper housing breaks away, both the flapper valve and the check valve automatically close to minimize spillage of fuel. A bleed valve is provided to relieve pressure in the fuel conduit means to which the separable portion of the upper housing is connected, in the event a fire occurs upon its breaking away. In one embodiment the check valve yieldingly engages a seat formed in the upper end of the upper housing, immediately above the notch and is opened by fuel flow pressure. In another embodiment the check valve is normally held open by a post projecting upwardly from a bridge mounted beneath the groove. In a third embodiment, the poppet valve is also held in an open position by a similar post and is engageable with a seat formed in the upper staff ace of the upper housing. The upper housing and check valve comprises a replacement unit which can be mounted on existing lower housing to provide the benefits of the present invention or to replace an upper housing when an accident occurs.

Emergency shut-off valves

An emergency valve is provided to shut off the flow of fuel in the event a fuel dispenser is struck with sufficient force to rupture the fuel conduit means therefor. The valve comprises a lower housing connected to a source of pressurized fuel and an upper housing connected to conduit means which extend to a dispensing nozzle. The upper housing has a groove which defines the plane of a weakened portion. When the impacted with a relatively high lateral force, the portion of the upper housing, above the groove, will separate, or break away. A normally open, main control, flapper valve is mounted in the lower housing. A poppet check valve is mounted in the upper housing. When the separable portion of the upper housing breaks away, both the flapper valve and the check valve automatically close to minimize spillage of fuel. A bleed valve is provided to relieve pressure in the fuel conduit means to which the separable portion of the upper housing is connected, in the event a fire occurs upon its breaking away. In one embodiment the check valve yieldingly engages a seat formed in the upper end of the upper housing, immediately above the notch and is opened by fuel flow pressure. In another embodiment the check valve is normally held open by a post projecting upwardly from a bridge mounted beneath the groove. In a third embodiment, the poppet valve is also held in an open position by a similar post and is engageable with a seat formed in the upper surface of the upper housing. The upper housing and check valve comprises a replacement unit which can be mounted on existing lower housing to provide the benefits of the present invention or to replace an upper housing when an accident occurs.

An emergency valve shuts off the flow of fuel in the event a fuel dispenser is struck with sufficient force to rupture the fuel conduit means therefor. The valve comprises a lower housing connected to a source of pressurized fuel and an upper housing connected to conduit means which extend to a dispensing nozzle. The upper housing has a groove which defines the plane of a weakened portion. When the impacted with a relatively high lateral force, the portion of the upper housing, above the groove, will separate, or break away. A normally open, main control, is mounted in the lower housing. A check valve is mounted in the upper housing. When the separable portion of the upper housing breaks away, both the flapper valve and the check valve automatically close to minimize spillage of fuel. A bleed valve is provided to relieve pressure in the fuel conduit means to which the separable portion of the upper housing is connected, in the event a fire occurs upon its breaking away. Three embodiments illustrate alternate check valve constructions. The upper housing and check valve comprises a replacement unit which can be mounted on existing lower housing to provide the benefits of the present invention or to replace an upper housing when an accident occurs.

Growing community of inventors

Cincinnati, OH, United States of America

Lawrence R Blasch