Abstract

A concrete flow leakage-preventing shut-off valve includes an outer flexible casing configured to be disposed around a concrete delivery hose. A flexible inflatable bladder is disposed within the casing and defines a gas chamber therein. A gas intake/exhaust device extends through the casing and into the gas chamber such that pressurized gas introduced and exhausted from the gas chamber enables movement of the bladder to define closed and open concrete flow conditions of concrete relative to an outlet end of the hose. A clamping arrangement secures opposite ends of the casing and the bladder in radially and axially spaced apart relationship, and is configured to maintain a surrounding relationship of the casing and bladder with respect to the hose. In one aspect, the weight of the shut-off valve may be reduced by using a low weight, flexible material, which may increase the stability safety factor of a pump truck it is mounted on.Date Recue/Date Received 2022-08-10

IPC Classes  ?

• B65D 90/56 - Gates or closures operating by deformation of flexible walls
• E04G 21/04 - Devices for both conveying and distributing
• F16K 7/07 - Diaphragm cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage with tubular diaphragm constrictable by external radial force by means of fluid pressure
• F16K 7/10 - Diaphragm cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage with inflatable member
• F16L 55/10 - Means for stopping flow in pipes or hoses

Abstract

A concrete flow leakage-preventing shut-off valve includes an outer flexible casing configured to be disposed around a concrete delivery hose. A flexible inflatable bladder is disposed within the casing and defines a gas chamber therein. A gas intake/exhaust device extends through the casing and into the gas chamber such that pressurized gas introduced and exhausted from the gas chamber enables movement of the bladder to define closed and open concrete flow conditions of concrete relative to an outlet end of the hose. A clamping arrangement secures opposite ends of the casing and the bladder in radially and axially spaced apart relationship, and is configured to maintain a surrounding relationship of the casing and bladder with respect to the hose.

IPC Classes  ?

• E04G 21/04 - Devices for both conveying and distributing
• F16K 7/07 - Diaphragm cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage with tubular diaphragm constrictable by external radial force by means of fluid pressure
• B65D 90/56 - Gates or closures operating by deformation of flexible walls

Abstract

A concrete flow leakage-preventing shut-off valve includes an outer flexible casing configured to be disposed around a concrete delivery hose. A flexible inflatable bladder is disposed within the casing and defines a gas chamber therein. A gas intake/exhaust device extends through the casing and into the gas chamber such that pressurized gas introduced and exhausted from the gas chamber enables movement of the bladder to define closed and open concrete flow conditions of concrete relative to an outlet end of the hose. A clamping arrangement secures opposite ends of the casing and the bladder in radially and axially spaced apart relationship, and is configured to maintain a surrounding relationship of the casing and bladder with respect to the hose.

IPC Classes  ?

• F16K 15/20 - Check valves specially designed for inflatable bodies, e.g. tyres
• F16K 7/07 - Diaphragm cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage with tubular diaphragm constrictable by external radial force by means of fluid pressure
• E04G 21/04 - Devices for both conveying and distributing

Abstract

An assembly for forming a mechanical interface for fastening tubular components includes a tubular pipe having at least one end with an external surface provided with groove structure. A tubular attachment is provided with a first engagement structure configured to be aligned with the groove structure on the tubular pipe. The tubular attachment is axially force fit on the outer end of the tubular pipe, and radially fastened thereto in response to at least one tool applied to the external surface of the tubular attachment. Also disclosed is a method for forming the mechanical interface between the tubular pipe and the tubular attachment.

IPC Classes  ?

• F16L 57/06 - Protection of pipes or objects of similar shape against external or internal damage or wear against wear
• B65G 53/52 - Adaptations of pipes or tubes

Goods & Services

Pipes and pipe couplings of metal for pumping concrete Concrete placing machines, namely, bridge deck spreaders and concrete boom spreaders Rubber hoses and wire reinforced rubber hoses for pumping concrete

Goods & Services

pipes and pipe couplings of metal for pumping concrete