Search Patents
  • Patent number: 3962918
    Abstract: A flow indicator for use in conjunction with a flow meter which imparts a rotational movement to a shaft in response to the fluid flow rate through the flow meter, wherein the flow indicator includes a pointer attached to the shaft which provides a visual indication of the flow rate through the flow meter. The shaft is biased in one rotational direction by a suspended weight which is attached by a flexible member to a pulley secured to the shaft. An electrical switch is also provided within the flow indicator housing and is actuated by movement of the weight.
    Type: Grant
    Filed: November 15, 1974
    Date of Patent: June 15, 1976
    Assignee: Nancy Rosaen
    Inventor: Nils O. Rosaen
  • Patent number: 4063455
    Abstract: A positive displacement flow meter is provided and comprises a housing having an inlet and an outlet. A vane is secured to a rotatably mounted shaft extending through the housing and resilient means attached to the shaft urge the vane to a closed position whereby fluid communication is closed between the inlet and the outlet in the housing. An indicator is secured to one axial end of the shaft and provides a visual indication of the fluid flow rate through the fluid flow meter. The other axial end of the shaft is accessible exteriorly of the housing and is adapted for attachment to a tool for manually rotating the shaft.
    Type: Grant
    Filed: June 21, 1976
    Date of Patent: December 20, 1977
    Assignee: Nancy Helen Rosaen
    Inventor: Nils O. Rosaen
  • Patent number: 4041891
    Abstract: A flow indicator for use in conjunction with a flow meter of the type which imparts a rotational movement to a shaft in response to the fluid flow rate through the flow meter. A biasing assembly for biasing the shaft in a rotational direction opposite to that produced by the fluid flow through the flow meter is provided comprising a spring carrier, a screw for securing the spring carrier to the shaft, and a coil spring secured at one end to the spring carrier and at its other end to a spring retainer shell which is secured against rotation to the flow meter. Removable pins extend through the spring carrier and the spring retainer shell to prevent rotation of the retainer shell relative to the spring carrier until the biasing assembly is secured to the flow meter indicator. An indicator needle is attached to an outwardly extending end of the spring carrier and provides a visual indication of the rotational position of the spring carrier exteriorly of the flow indicator.
    Type: Grant
    Filed: March 22, 1976
    Date of Patent: August 16, 1977
    Assignee: Nancy Helen Rosaen
    Inventor: Nils O. Rosaen
  • Publication number: 20100270231
    Abstract: A liquid filter, with a housing inlet port and outlet port arranged at the bottom of the liquid filter. The liquid filter may also be configured with an inward projecting domed top cover and/or an eccentric septum plate supporting a desired filter element and/or filter basket. The inward projecting domed top cover configurable with respect to the septum plate to retain the desired filter element and/or filter basket in place when in a closed position.
    Type: Application
    Filed: April 22, 2010
    Publication date: October 28, 2010
    Applicant: ROSEDALE PRODUCTS, INC.
    Inventor: Nils N. Rosaen
  • Patent number: 5395090
    Abstract: A valve for use in high pressure fluid systems includes means for moving a valve assembly between a position opening fluid flow through the valve and a position closing fluid flow through the valve. The valve is opened by the use of system pressure but when the valve is moved to a closed position the effect of the system pressure on the valve is neutralized and closing is accomplished by spring force only, thereby minimizing the effect of closing on the seals to increase seal life.
    Type: Grant
    Filed: October 23, 1992
    Date of Patent: March 7, 1995
    Inventor: Nils O. Rosaen
  • Patent number: 8371453
    Abstract: A liquid filter, with a housing inlet port and outlet port arranged at the bottom of the liquid filter. The liquid filter may also be configured with an inward projecting domed top cover and/or an eccentric septum plate supporting a desired filter element and/or filter basket. The inward projecting domed top cover configurable with respect to the septum plate to retain the desired filter element and/or filter basket in place when in a closed position.
    Type: Grant
    Filed: April 22, 2010
    Date of Patent: February 12, 2013
    Assignee: Rosedale Products, Inc.
    Inventor: Nils N. Rosaen
  • Patent number: 4032451
    Abstract: A fluid filter device having a filter chamber and a cylindrical bypass valve mounted so as to be rotatable about its longitudinal axis between a filtering position and a bypass position. In the bypass position the fluid passes from one end of the valve through to its opposite end toward the filter outlet; in the filtering position the fluid passes through a side opening in the valve to the filter chamber and then is returned to the bypass valve before being discharged through the filter outlet.
    Type: Grant
    Filed: March 31, 1975
    Date of Patent: June 28, 1977
    Inventor: Nils O. Rosaen
  • Patent number: 4388835
    Abstract: A fluid flow meter comprising a housing having a fluid inlet, a fluid outlet and defining an internal fluid chamber. A fluid passageway is formed in the housing for connecting the inlet with one end of the chamber while the outlet is open to the other end of the fluid chamber. The ends of the chamber are closed at the outlet end by an end cap and the other inlet end by a cartridge assembly which includes an end cap. Central to the housing fluid passageway and to the inlet end cap is attached to a rod having a conical metering portion. Attached to the metering rod is a freely centering piston assembly sealed nearest the outlet end by a flexible seal. An axial bore is formed through the piston and an orifice plate is detachably secured to the piston at near midpoint in the axial bore. One side of the plate is open to the inlet end while the other side of the plate is open to the outlet end of the chamber.
    Type: Grant
    Filed: August 3, 1981
    Date of Patent: June 21, 1983
    Assignee: Universal Flow Monitors
    Inventor: Nils O. Rosaen
  • Patent number: 4928515
    Abstract: An air-oil mist sensor includes a collecting plate disposed immediately downstream from a plurality of narrow bores. Oil separates from the mist and deposits on the collecting plate. Thereafter, the separated oil is led to a reservoir where it is collected and stored during a collection cycle. At the beginning of a sampling cycle, a piston is moved into the reservoir to pressurize any oil contained therein. The force of the piston is transferred by the oil to a second, orthogonal piston which is used to actuate a switch mechanism and provide an indication whether oil is present. As the second piston is displaced, an opening is uncovered to drain oil from the reservoir. In the event that the reservoir contains air due to the collection of an insufficient amount of oil, the air is simply compressed by the piston and force is not transferred to the second piston to actuate the switch. About 98% of the oil in the mist is stripped from it by passage through the sensor.
    Type: Grant
    Filed: November 30, 1988
    Date of Patent: May 29, 1990
    Inventor: Nils O. Rosaen
  • Patent number: 4139468
    Abstract: A fluid filtering device for use with a filter body having a chamber open at one end and a fluid inlet and a fluid outlet port in fluid communication with the chamber. The device comprises a housing formed by molding a plastic cap onto one axial end of a tubular cage. A filter element is disposed within the cage while an annular member is nondetachably secured to the other end of the cage to entrap the filter element within the cage. The cage is dimensioned so that upon insertion into the body chamber, the filter element is positioned between the inlet and outlet ports while the cap covers the open end of the chamber. In addition, a fluid bypass valve is contained within the cage and bypasses the fluid flow around the filter element from the fluid inlet to the fluid outlet upon the occurrence of a predetermined differential pressure across the filter element.
    Type: Grant
    Filed: October 11, 1977
    Date of Patent: February 13, 1979
    Inventor: Nils O. Rosaen
  • Patent number: 4346607
    Abstract: A flow meter is provided having a housing with inlet and outlet ports respectively adapted to be connected with a source of fluid pressure and a fluid user. A semicircular vane member mounted within the housing is movable in response to a change in the flow rate between the inlet and outlet ports to rotate a shaft to which the vane member is attached. The shaft, in turn, extends externally of the housing and is operatively coupled to an indicator for providing an external visual indication of the rate of fluid flow through the flow meter. The improvement, however, comprises a unitary spring seal having a first portion rigidly secured to the housing and a second portion which extends between the housing and the vane shaft. This second portion extends along the shaft within the housing and is resiliently urged against the outer peripheral surface of the shaft in order to prevent fluid leakage between the vane shaft and the housing.
    Type: Grant
    Filed: March 24, 1980
    Date of Patent: August 31, 1982
    Inventor: Nils O. Rosaen
  • Patent number: 4139466
    Abstract: A differential fluid pressure indicating device for use in conjunction with a filter body carrying a filter element which provides an exteriorly visible signal when the differential pressure across the filter element exceeds a predetermined amount. The device comprises a housing having a cylindrical chamber in which a rotationally constrained piston is axially slidably disposed and movable between a first and second axial position while resilient means urge the piston towards its first axial position. The inlet fluid pressure communicates with one axial end of the piston while the outlet fluid pressure communicates with the other axial end of the piston. When the differential pressure across the filter element exceeds a predetermined value, the inlet fluid pressure moves the piston from its first to its second axial position and releases a spring loaded exteriorly visible member which rotates from a first to a second rotational position.
    Type: Grant
    Filed: September 8, 1977
    Date of Patent: February 13, 1979
    Inventor: Nils O. Rosaen
  • Patent number: 4966697
    Abstract: A fluid filtering device includes a housing having an interior chamber with an open top and an inlet and outlet open to the chamber. An annular seat is secured to the housing within the chamber in a position spaced downwardly from the open top so that the seat protrudes inwardly into the chamber. A filter element is removably insertable into the chamber through its open top and to a filtering postion in which the filter element is positioned between the housing inlet and outlet. The filter element includes an outwardly flanged portion which abuts against the seat when the filter element is in its filtering position. A cover is detachably secured over the open top of a housing and a spring member is secured at one end to the filter element to extend upwardly to abut against the cover and secure the filter element in position against any loss of seal with respect to the housing during operation of the filtering device.
    Type: Grant
    Filed: June 13, 1989
    Date of Patent: October 30, 1990
    Inventor: Nils N. Rosaen
  • Patent number: 4622994
    Abstract: The present invention provides a fluid handling device which operates as a combination check valve and fluid flow meter. The fluid handling device comprises a housing having an inlet, an outlet and a fluid passageway formed therebetween. A valve seat is contained within the housing in series with the fluid passageway while a valve member cooperates with the valve seat and is movable between an open and a closed position. A compression spring urges the valve member towards its closed position so that whenever the fluid pressure at the outlet exceeds the fluid pressure at the inlet, the valve moves to its closed position thus preventing reverse fluid flow through the device. Preferably, a tapered surface on the valve member forms a variable area opening at the valve seat which increases in area as the valve member moves from its closed and towards its open position.
    Type: Grant
    Filed: April 8, 1985
    Date of Patent: November 18, 1986
    Inventor: Nils O. Rosaen
  • Patent number: 4701259
    Abstract: A fluid filter includes a housing having a fluid inlet, a fluid outlet, and an open top filter chamber intermediate the inlet and the outlet. The filter chamber is adapted to receive a filter basket holding a filter bag therein. The filter basket is supported in the filter chamber by the bottom end of the basket which engages an inwardly radiused wall portion of the housing. The basket includes a support plate for supporting the bottom of the filter bag within the basket above the bottom end portion of the basket. The lower end of the basket beneath the plate includes a wall portion which can be modified to conform to the shape of the housing to stably support the filter basket in a fixed position within the filter chamber.
    Type: Grant
    Filed: March 27, 1986
    Date of Patent: October 20, 1987
    Assignee: Rosedale Products, Inc.
    Inventor: Nils N. Rosaen
  • Patent number: 3984325
    Abstract: A filter device comprising a cylindrical tubular housing with a plurality of cartridge filters slidably disposed within a central bore of the housing. Each cartridge filter includes a tubular filter element disposed between a front end cap and a back end cap of the cartridge filter. A fluid inlet formed through the housing of the filter assembly communicates with the outer periphery of the filter element while the internal surface of the filter element communicates with an outlet formed in the housing via a bore formed through the front end cap of the next adjacent cartridge filter. Both the front end cap and the back end cap form a sealing engagement with the central bore of the housing so that as the filter element becomes dirty or clogged, a clean cartridge filter may be axially positioned in the housing to filter the fluid flow between the inlet and outlet without disrupting the fluid flow rate through the filter assembly.
    Type: Grant
    Filed: January 6, 1975
    Date of Patent: October 5, 1976
    Inventor: Nils O. Rosaen
  • Patent number: 4535797
    Abstract: An automatic shut off valve comprising a housing having a main inlet, an outlet, a user inlet and a user outlet. A valve assembly is contained within the housing and is movable between an open and a closed position. In its open position, the user inlet and outlet are fluidly connected in series with the main inlet and main outlet while, conversely, in its closed position, the valve assembly sealingly closes and isolates both the user inlet and outlet from the main inlet and main outlet. A compression spring urges the valve assembly towards its closed position while a fluid flow rate greater than a predetermined amount into the user inlet retains the valve assembly in its open position. Consequently, in the event of an interruption or blockage of the fluid flow between the user inlet and outlet, the compression spring snaps the valve assembly to its closed position thus isolating the inlet and outlet from the main inlet and terminating fluid flow through the shut off valve.
    Type: Grant
    Filed: August 17, 1983
    Date of Patent: August 20, 1985
    Inventor: Nils O. Rosaen
  • Patent number: 4307405
    Abstract: A device for recording the flow rate through a flow meter over a period of time is provided for use in conjunction with a flow meter having a rotatable member, the rotational position of which is indicative of the fluid flow rate through the flow meter. The recording device comprises a housing in which a recording medium is mounted and rotatably driven at a predetermined. rate. An elongated scribe arm is pivotally secured at one end to the housing and, at its other end, has a writing instrument which engages the writing medium and produces a visible mark thereon. Similarly, an elongated actuating arm has an axle which is pivotally mounted to the housing and this axle in turn is connected to the flow meter rotatable member. The actuating arm and scribe arm are in turn connected together by a connecting arm which is pivotally connected to the actuating arm at one end and pivotally connected to the scribe arm at its other end.
    Type: Grant
    Filed: March 24, 1980
    Date of Patent: December 22, 1981
    Inventor: Nils O. Rosaen
  • Patent number: 4495068
    Abstract: A filter assembly for detachable connection with a housing, comprising an elongated tubular filter element; and a holder assembly for the filter element, which includes a closure plate which engages one end of the filter element and an annular retainer which engages the other end. An elongated rod extending axially through the center of the filter element connects the closure member and annular member together so that the filter element is entrapped therebetween. The filter assembly is insertable through the open end of the housing and into the filter chamber so that the housing inlet is open through the annular retainer to the interior of the filter element. The filter element is spaced radially inwardly from the walls forming the filtering chamber thus defining an annular chamber which is fluidly connected to the housing outlet. A closure cap is then secured to and closes the end of the housing.
    Type: Grant
    Filed: October 29, 1979
    Date of Patent: January 22, 1985
    Inventor: Nils O. Rosaen
  • Patent number: D246109
    Type: Grant
    Filed: March 23, 1976
    Date of Patent: October 18, 1977
    Inventor: Nils O. Rosaen
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