Patents Assigned to Nova
  • Patent number: 4438991
    Abstract: The invention relates to a bearing housing (1) for supporting a bearing (2) in a bearing seat arranged in the housing. In order to provide a rigid, strong, lightweight and inexpensive bearing housing, the housing has the shape of a tube with a mainly rectangular cross section. The axis (3) of a bearing mounted in the housing extends mainly perpendicular to two housing walls (4) facing each other and the bearing is enclosed by the housing.
    Type: Grant
    Filed: November 3, 1982
    Date of Patent: March 27, 1984
    Assignee: SKF Nova AB
    Inventor: Bengt Lundgren
  • Patent number: 4407603
    Abstract: The invention refers to a device for producing a friction joint incorporating two members (1,2) having concentric opposite and mainly tapering surfaces, which are squeezed against each other at a relative axial displacement in one direction. The joint preferably incorporates a sleeve, on which one of said surfaces is arranged and for obtaining a minimum radial extension are the joint surfaces in longitudinal section provided with a saw tooth contour, which can be formed by a number of taper portions arranged in a row or by a helical ramp (6), which forms an angle to the center axes of the members.
    Type: Grant
    Filed: October 27, 1980
    Date of Patent: October 4, 1983
    Assignee: SKF Nova AB
    Inventor: Bengt Lundgren
  • Patent number: 4406615
    Abstract: An igniter for gas discharge pipes such as flare lines produces a remotely controlled flame. The igniter has a tubular housing that is mounted to the gas discharge pipe. A fuel line extends through the housing and terminates in a nozzle. A swirling device creates a swirling motion in the nozzle to prevent extinguishment due to high winds. An electrical system creates an electrical spark in the nozzle to ignite the fuel. An auxiliary line provides fuel unmixed with air to the nozzle to enrichen the mixture and provide coloration to the flame. The nozzle extends laterally from the housing. The mounting means allows the nozzle to discharge the flame across the face of the discharge pipe. A heat shield protects the upstream end of the housing from heat due to the discharge pipe.
    Type: Grant
    Filed: July 20, 1981
    Date of Patent: September 27, 1983
    Assignee: Nova Patents of North America, Inc.
    Inventors: Romeo E. Guerra, Robert H. Nelson
  • Patent number: 4396849
    Abstract: A magnetic drive assembly includes a housing having a pair of end flanges, an annular drive member containing a plurality of drive members and internally thereof a driven member containing a plurality of driven magnets. The drive and driven members are bearingly supported by the end flanges so that rotation of the drive member results, through magnetic interaction, on rotation of the driven member. A barrier separates the driven and drive members and extends between the end flanges to hermetically seal the driven member. The barrier is formed from a plurality of abutting axially adjacent annular laminations held in axial compression by the end flanges, the laminations being formed of a non-magnetic material. In one embodiment the laminations have a chevron shape in radial cross-section whereby adjacent laminations are nestable with each other.
    Type: Grant
    Filed: April 22, 1981
    Date of Patent: August 2, 1983
    Assignee: Nova Scotia Research Foundation Corporation
    Inventor: Patrick M. Taiani
  • Patent number: 4366726
    Abstract: A gear comprises two co-operating gear wheels (1,2), one (2) of which, in operation, performing a conical pendulating movement (nutation). One gear wheel (2) is non-rotationally connected to an adjacent element (8) by resilient elongated members (9), preferably extending mainly in the circumferential direction of the gear wheel between two supports (10,11) arranged diametrically on the gear wheel and two supports (12,13) arranged diametrically on the adjacent element and offset about 90.degree. in relation to the first mentioned supports. The resilient members keep the gear wheel (2) non-rotationally in the adjacent element and permits said pendulating movement of the gear wheel.
    Type: Grant
    Filed: September 2, 1980
    Date of Patent: January 4, 1983
    Assignee: SKF Nova AB
    Inventor: Sven W. Nilsson
  • Patent number: 4364282
    Abstract: The invention relates to a mechanism with a screw (1) and a nut made of two sheet metal halves (4, 5) and having two complementary helical grooves (12, 13, 14, 15) which constitute raceways for a number of rolling bodies (16, 17) circulating in at least one closed loop around the screw. In order to provide a mechanism with small dimensions and good circulation conditions for the rolling bodies, the groove in a cylindrical portion of the nut surrounding the screw is provided with a recessed portion (18, 19) with a pitch that is different from the rest of the groove, said recessed portion constituting a return portion of the closed loop over a ridge (3) between two adjacent groove turns in the screw.
    Type: Grant
    Filed: August 26, 1980
    Date of Patent: December 21, 1982
    Assignee: SKF Nova AB
    Inventor: Sven W. Nilsson
  • Patent number: 4362411
    Abstract: The invention relates to a device for providing a friction joint by pressing a number of first elements against a second element by means of a pressure medium acting on said first elements. In order to obtain an improved ability of transmitting a torque and an improved stability regarding radial load, said first elements are so arranged that they encircle or are encircled by said second element and are acted upon by a number of mutually independent portions of the pressure medium, each portion acting on its own element.
    Type: Grant
    Filed: October 19, 1979
    Date of Patent: December 7, 1982
    Assignee: SKF Nova AB
    Inventor: Sture L. Asberg
  • Patent number: 4361473
    Abstract: In an electrode for determining the potassium ion content of a liquid sample to be tested, the electrode including a membrane having incorporated therein an ion selective component, the improvement in which the ion specific component is a compound of the formula: ##STR1## wherein each R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, and R.sub.8 is hydrogen or an alkyl group containing between one and about 20 carbon atoms, p is 0 or 1, n is one or more, and, each s and r, independently, is 1, 2, or 3, provided that, when p is 1, n is 8 or more.
    Type: Grant
    Filed: October 28, 1981
    Date of Patent: November 30, 1982
    Assignee: Nova Biomedical Corporation
    Inventors: Chung C. Young, John P. Willis
  • Patent number: 4346810
    Abstract: The present invention is a bottle closure means which utilizes a cap hinged to a collar which is in turn mounted on the bottle. The invention has a spring-action strip which yieldably forces the cap into a closed position, thus sealing the bottle.
    Type: Grant
    Filed: September 9, 1980
    Date of Patent: August 31, 1982
    Assignee: Nova-Handels AG
    Inventor: Richard Kneissl
  • Patent number: 4318654
    Abstract: A frame assembly rotatably supported on a pair of laterally spaced wheels that have resilient rims that will not damage the surface of a tennis court as they roll thereon, said frame assembly including an elongate tennis ball receiving basket mounted on the forward portion thereof, with the bottom of the basket at a height above the tennis court surface greater than the diameters of tennis balls resting in random positions on the surface, and the frame including an upwardly and rearwardly extending handle. A shaft extends transversely between aligned opening in laterally spaced legs that form a part of the frame assembly. A tennis ball retrieving assembly that includes laterally spaced pairs of resilient disks is rotatably supported on the shaft, with the lateral spacing between each pair of disks being less than the diameter of a tennis ball, and each pair of disks having beads on the periphery that removably maintain a tennis ball that has entered the annulus space between a pair of disks therein.
    Type: Grant
    Filed: July 28, 1980
    Date of Patent: March 9, 1982
    Assignee: Alpha Nova Engineering Corp.
    Inventor: Delbert Lee
  • Patent number: 4314895
    Abstract: An electrode assembly comprising an organic plastic sample flow-through tube, a portion of the wall of which comprises a membrane, the membrane comprising a matrix of an organic plastic material containing a non-volatile solvent-plasticizer and an ion exchange material dissolved in the solvent plasticizer, the membrane chemically bonded to and integral with said tube. The method of forming the membrane to the tube comprises dissolving the matrix material, the ion exchange material and the non-volatile solvent plasticizer in a volatile solvent, placing the resulting solution on a surface and evaporating the volatile solvent to form the membrane, contacting an edge of the tube to the membrane material, contacting the tube edge with said volatile solvent and allowing the solvent to evaporate.
    Type: Grant
    Filed: May 2, 1980
    Date of Patent: February 9, 1982
    Assignee: Nova Biomedical Corporation
    Inventors: Frederick F. Spaziani, James E. Fowler
  • Patent number: 4311058
    Abstract: The invention relates to a device for transforming rotational movement into linear movement or the reverse. The device comprises a cylindrical shaft and at least one support displaceable along the shaft for supporting at least one bearing with a ring which surrounds the shaft and is rotatable relative to the support. The bore diameter of the ring is larger than the shaft diameter and the ring has an inclined position in relation to the shaft and is pressed into contacting the shaft. In order to ensure simple manufacturing and assembling of the device, the support is provided with an opening for the bearing, which opening extends across the support and has a constant cross section profile along the entire extension, mainly corresponding to the axial bearing profile.
    Type: Grant
    Filed: November 27, 1979
    Date of Patent: January 19, 1982
    Assignee: SKF Nova AB
    Inventor: Bengt Lundgren
  • Patent number: 4306114
    Abstract: An automatic mixing selector device for use with an audio amplifier or tuner for automatic priority selection and digital fading of two or more audio sources using the amplifier and tuner controls. The circuit comprises a priority selector circuit which monitors the designated priority audio source for signal amplitude and duration, a micro-computer then operates a digital fader to phase in the priority signal and also to phase in the alternate signal in the absence of a sufficient priority signal.
    Type: Grant
    Filed: January 21, 1980
    Date of Patent: December 15, 1981
    Assignee: Summa-Nova Corporation
    Inventor: Jeffery C. Callahan
  • Patent number: 4304256
    Abstract: A torque transmitting assembly for effecting rotation of a valve member such as a butterfly valve is hermetically sealed to the valve housing. It includes a rotor member having a plurality of circumferentially spaced permanent magnets of opposite polarity and a driver magnet assembly having a like plurality of circumferentially spaced permanent magnets of opposite polarity facing the magnets mounted to the rotor. The two sets of magnets are separated by a stainless steel separator which hermetically seals the rotor. The driver magnet assembly is rotatable about the separator so that magnetic coupling forces effect a following rotation of the rotor and hence of the valve member. A magnetic indicator may be used to identify the rotational position of the rotor. The entire assembly is hermetically sealed and no packing is required. The assembly is especially useful to control a valve in a hazardous environment wherein no leakage of the fluid being controlled by the valve member is permissible.
    Type: Grant
    Filed: October 29, 1979
    Date of Patent: December 8, 1981
    Assignee: Nova Scotia Research Foundation Corporation
    Inventor: Patrick M. Taiani
  • Patent number: 4273391
    Abstract: A bearing assembly rotatably supporting a shaft journal having a gear wheel at one end in a cylindrical seat in a housing comprising a one-piece outer ring having threads on its outer periphery cooperating with threads in the cylindrical seat. A plurality of circumferentially spaced openings are provided in the outer axial end face of the outer ring to accommodate a turning tool having projections corresponding to the openings to permit axial adjusting movement of the bearing assembly relative to the housing. The bearing assembly further includes an inner race ring on the shaft journal, two rows of rolling elements in the annular space between the rings spaced closely relative to one another. One of the rows comprises rollers having axes inclined at an angle to the bearing axis disposed adjacent the gear wheel and the other row comprises balls which roll against raceways in the rings to provide angular contact which are disposed at the opposite end of the shaft journal.
    Type: Grant
    Filed: August 10, 1979
    Date of Patent: June 16, 1981
    Assignee: SKF Nova AB
    Inventor: Sture L. Asberg
  • Patent number: 4271120
    Abstract: A device for detecting and indicating the presence of corrosive fluids in a specified volume, as in the insulating blanket surrounding the pipes in a heavy water plant, is disclosed. The device includes a housing containing a primary indicator such as a bobbin with a long, brightly colored ribbon wrapped therearound, and a secondary indicator. A compression spring abuts the secondary indicator and is held in compression by a corrodable link anchored at one end to the housing and at the other end to the secondary indicator. The link is exposed to the volume being monitored and if there is a corrosive fluid present the fluid will corrode the link until it breaks. The spring force is released to act on the secondary indicator to project the primary indicator from the housing. The ribbon unwinds from the bobbin to provide a visual indication of the presence of the corrosive fluid.
    Type: Grant
    Filed: January 7, 1980
    Date of Patent: June 2, 1981
    Assignee: Nova Scotia Research Foundation Corporation
    Inventor: Louis M. Michaud
  • Patent number: 4265455
    Abstract: The invention concerns a sealing device and is characterized by comprising an outer T-shaped supporting ring (5) and an inner U-shaped supporting ring (7), at least one sealing element (12, 13) preferably having flocked fibres being arranged between the outer and inner supporting ring.
    Type: Grant
    Filed: November 14, 1978
    Date of Patent: May 5, 1981
    Assignee: SKF Nova AB
    Inventor: Bengt Lundgren
  • Patent number: 4248487
    Abstract: The combination comprising a housing, a shaft journal having a gear wheel at one end, and a bearing assembly rotatably supporting the shaft journal in a cylindrical seat in the housing. The assembly includes a one-piece outer ring having threads on its outer periphery cooperating with threads in the cylindrical seat. The outer ring is rotatable to permit axial adjusting movement of the bearing assembly relative to the housing. The bearing includes two rows of rolling bodies in the annular space between the rings spaced closely relative to one another and an inner race ring on the shaft journal for each of the rows of rolling bodies. One of the rows comprises rollers having axes inclined at an angle to the bearing axis disposed adjacent the gear wheel and the other row of rolling bodies comprises balls which roll against raceways in the ring to provide angular contact disposed at the opposite end of the shaft journal.
    Type: Grant
    Filed: February 26, 1979
    Date of Patent: February 3, 1981
    Assignee: SKF Nova AB
    Inventor: Sture L. Asberg
  • Patent number: 4234797
    Abstract: In apparatus for controlling the treatment of a workpiece by a beam emanating from a source, there is translational relative movement in two orthogonal directions between the beam and the workpiece support element, and control of velocity in one (control) direction occurs in response to a detector, mounted behind the support, which periodically samples the beam through a moving slot in the support element. This slot extends over the range of movement in the control direction. An ion implanter is shown in which the support element is a constantly spinning disk the axis of which is translated in the control direction. Another ion implanter is shown in which the support element is a moving belt. A simple control circuit, useful for both embodiments, achieves a uniform ion dosage upon semiconductor substrates at a high production rate despite variations in beam intensity. The detector is not affected by a shower of electrons upon the support that neutralizes charge on the workpieces.
    Type: Grant
    Filed: May 23, 1979
    Date of Patent: November 18, 1980
    Assignee: Nova Associates, Inc.
    Inventor: Geoffrey Ryding
  • Patent number: D271327
    Type: Grant
    Filed: May 26, 1981
    Date of Patent: November 8, 1983
    Assignee: Nova Patents of North America, Inc.
    Inventors: Romeo E. Guerra, Robert H. Nelson