Patents Assigned to Kosan Teknova A/S
  • Patent number: 5787918
    Abstract: The reduction valve (1) comprises an activating spindle (12;42) which by a control handle on a pivotable shaft (8) and an eccentric spigot (11) is displaceable for opening of a self-closing valve (4) in a gas container valve (3) for a bottle for liquified gas. A section (18;49) of the activating spindle or of the self-closing valve (4) is made from a material having a low yield temperature, such that heating thereof, for instance caused by fire, causes the material to yield, whereby the activating spindle (12;42) or the self-closing valve (4), respectively, is shortened under influence of the biasing force from the spring (6) of the valve (4), whereby the valve (4) closes.
    Type: Grant
    Filed: November 3, 1995
    Date of Patent: August 4, 1998
    Assignee: Kosan Teknova A/S
    Inventor: Klaus Ulrik Pihl Jensen
  • Patent number: 5787921
    Abstract: The gas container valve has a valve body (4) with a detachably mounted valve head (5) which by means of a valve spring (6) is pressed against a seat (3) of a bushing (7) screwed into the housing (2) of the gas container valve. The valve body has at its other end a second valve head (8) which when the bushing (7) is unscrewed is pressed against a second valve seat (9) of the valve housing 2 by the valve spring. Thereby, it becomes possible to replace/repair the first valve seat (3) and/or the first valve head (5), while the gas container valve is mounted on a gas container containing gas under pressure.
    Type: Grant
    Filed: February 22, 1996
    Date of Patent: August 4, 1998
    Assignee: Kosan Teknova A/S
    Inventor: Villy Ebert Kryger
  • Patent number: 5186208
    Abstract: A two-stage reduction valve for gaseous fluids consists of a high-pressure assembly with a high-pressure diaphragm (10) actuating a valve member disposed in the throat of a gas cylinder and of a low-pressure assembly with a likewise diaphragm-operated valve member (21) positioned in a gas duct (18) extending from the high-pressure assembly. A closing rod (30) connected with an operating handle (41) is restrictedly displaceably connected with a diaphragm spindle (14) firmly connected with the high-pressure diaphragm (10) and has at its upper end an essentially cylindrical bore (43) to displaceably receive the lower end of the closing rod (30).
    Type: Grant
    Filed: July 2, 1991
    Date of Patent: February 16, 1993
    Assignee: Kosan Teknova A/S
    Inventor: Frits P. U. Hansen
  • Patent number: 5026023
    Abstract: In a plug-and-socket coupling, particularly between a spout of a portable liquid gas container and a regulator mounted thereon, in which the first coupling part has a discharge outlet adapted to receive a stud or protrusion of the second coupling part, leakage to the surroundings from a pressure fluid passage through the coupling is impeded by an annular gasket movably disposed within an annular chamber between the stud and a surrounding skirt. Between the gasket and the stud there is a passge for pressure fluid to the annular chamber behind the gasket for loading the gasket to closely but against the internal surface of the skirt and a surface on the first coupling part.
    Type: Grant
    Filed: January 31, 1990
    Date of Patent: June 25, 1991
    Assignee: Kosan Teknova A/S
    Inventor: Ove Jensen
  • Patent number: 4550746
    Abstract: The housing (5, 6) of the regulator contains a medium-pressure chamber (10) to which gas is supplied from the cylinder when a self-closing cylinder valve (2) is open and which communicates with the regulator outlet (14) through a further valve (b 13), and a low-pressure chamber (23) in open communication with the outlet. The medium-pressure chamber (10) has a diaphragm wall (15) with a spindle (16) for controlling the cylinder valve (2). The low-pressure chamber (23) has a diaphragm wall (22) for controlling the further valve (13) through a connecting rod (20) carried by the diaphragm wall and coacting at its upper end with a manual selector (21) and at its lower end with the valve opener spindle (16). By means of the selector the connecting rod may be locked in a raised position in which the cylinder valve (2) is closed.
    Type: Grant
    Filed: August 3, 1984
    Date of Patent: November 5, 1985
    Assignee: Kosan Teknova A/S
    Inventors: Frits U. Hansen, Ove Jensen
  • Patent number: 4541464
    Abstract: The filling channel in the top piece of a liquid gas cylinder or a similar container to be filled only to a certain level determined by a float includes a closing valve which in the prescribed filling position of the container is raised from its seat by a pin on a universally journalled pivotal member which by a load is urged toward a given orientation in space. A tilting of the container causes the pivotal member to be rotated, thereby entailing a lateral displacement of the pin away from the closing valve which then occupies its closing position against the seat and prevents further filling until the container reoccupies the prescribed position.When the maximum filling level has been reached, the float causes closing of the same valve, for instance by dominating the load so as to provoke a rotation of the pivotal member.
    Type: Grant
    Filed: September 30, 1983
    Date of Patent: September 17, 1985
    Assignee: Kosan Teknova A/S
    Inventor: Ole Christiansen
  • Patent number: 4469116
    Abstract: A valve device serving to prevent overfilling of portable containers, particularly liquid gas cylinders, includes a ball which is freely rotatable relative to a spherical seating face in a casing having a filling channel extending to said seating face. The ball has a passage which in the prescribed filling position communicates with the channel, and the ball is through a rod and a flexible link connected to a load member. As long as this load member is above the liquid level, it tends to keep the ball, and thus its passage in a given orientation so that the communication is broken if the container is tilted away from the prescribed filling position.When the liquid level has reached a predetermined height, the load member acts as a float so as to interrupt the filling operation by causing the ball to change its orientation.
    Type: Grant
    Filed: May 10, 1983
    Date of Patent: September 4, 1984
    Assignee: Kosan Teknova A/S
    Inventor: Frits P. U. Hansen
  • Patent number: 4469117
    Abstract: A valve device serving to prevent overfilling of portable containers, particularly liquid gas cylinders, includes a ball which is freely rotatable relative to a spherical seating face in a casing having a filling channel extending to said seating face. The ball has a through passage which in the prescribed filling position communicates with the channel, and the ball is connected to a load member tending to keep the ball, and thus its passage, in a given orientation so that the communication is broken when the container is tilted away from the prescribed filling position.The device further includes a valve member controlled by a float and operative to interrupt the filling operation after a predetermined filling level has been reached in the container.
    Type: Grant
    Filed: May 10, 1983
    Date of Patent: September 4, 1984
    Assignee: Kosan Teknova A/S
    Inventor: Frits P. U. Hansen
  • Patent number: D334796
    Type: Grant
    Filed: January 7, 1987
    Date of Patent: April 13, 1993
    Assignee: Kosan Teknova A/S
    Inventor: Fritz P. U. Hansen