Abrégé

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

Classes IPC  ?

• B65D 90/56 - Portes ou fermetures agissant par déformation de parois flexibles
• E04G 21/04 - Dispositifs pour transporter et distribuer en même temps
• F16K 7/07 - Dispositifs d'obturation à diaphragme, p. ex. dont un élément est déformé, sans être déplacé entièrement, pour fermer l'ouverture à diaphragme tubulaire dont l'étranglement est assuré par une force extérieure radiale par pression d'un fluide
• F16K 7/10 - Dispositifs d'obturation à diaphragme, p. ex. dont un élément est déformé, sans être déplacé entièrement, pour fermer l'ouverture à élément gonflable
• F16L 55/10 - Moyens pour arrêter l'écoulement dans les tuyaux ou manches

Abrégé

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.

Classes IPC  ?

• E04G 21/04 - Dispositifs pour transporter et distribuer en même temps
• F16K 7/07 - Dispositifs d'obturation à diaphragme, p. ex. dont un élément est déformé, sans être déplacé entièrement, pour fermer l'ouverture à diaphragme tubulaire dont l'étranglement est assuré par une force extérieure radiale par pression d'un fluide
• B65D 90/56 - Portes ou fermetures agissant par déformation de parois flexibles

Abrégé

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.

Classes IPC  ?

• F16K 15/20 - Soupapes, clapets ou valves de retenue spécialement conçues pour corps gonflables, p. ex. les pneus
• F16K 7/07 - Dispositifs d'obturation à diaphragme, p. ex. dont un élément est déformé, sans être déplacé entièrement, pour fermer l'ouverture à diaphragme tubulaire dont l'étranglement est assuré par une force extérieure radiale par pression d'un fluide
• E04G 21/04 - Dispositifs pour transporter et distribuer en même temps

Abrégé

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.

Classes IPC  ?

• F16L 57/06 - Protection des tuyaux ou d'objets de forme similaire contre les dommages ou les usures internes ou externes contre l'usure
• B65G 53/52 - Adaptations des tuyaux ou des tubes

Produits et 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

Produits et services

pipes and pipe couplings of metal for pumping concrete