Patents Represented by Law Firm Lee, Smith & Jager
  • Patent number: 4330750
    Abstract: A variable delay circuit consists of a chain of logic gates with a selection circuit for selecting the output of any chosen one of the gates. A variable voltage is connected to the emitter load resistors of the gates, and permits the overall delay to be adjusted.
    Type: Grant
    Filed: March 3, 1980
    Date of Patent: May 18, 1982
    Assignee: International Computers Limited
    Inventor: Colin Mayor
  • Patent number: 4327744
    Abstract: The apparatus disclosed is for the self-collection of cervical cell specimens for subsequent examination and testing by a medical laboratory, and the apparatus disclosed comprises an elongated tubular finger member formed of a thin elastically resilient material closed at one end and adapted to fit over and resiliently grip the user's finger. Adjacent its closed end the finger member carries a raised resiliently flexible wiping blade. A thin tubular sleeve member, shorter than the finger member and flared at one end, is adapted to accommodate the wiping blade of the finger member, so that the finger member with the sleeve member surrounding the wiping blade thereof may be inserted into the vagina and the wiping blade may then be extended to wipe and thus collect cells from the cervical os. The wiping blade of the finger member then may again be retracted into the sleeve member and the two removed together.
    Type: Grant
    Filed: June 23, 1980
    Date of Patent: May 4, 1982
    Inventor: Louise W. Smith
  • Patent number: 4323316
    Abstract: A paper gauge for use with a shorthand machine to determine the quantity of paper remaining in the shorthand machine. A scale arm weighs the paper tape in the machine and the gauge is calibrated by weight to give the shorthand machine operator a reading in terms of the number of folds left in the paper strip. The displacement of the scale arm is proportional to the weight of the paper tape and movement of the paper gauge indicating means is proportional to displacement of the scale arm. Accurate readings are facilitated by the use of a hinged tray plate to hold the paper tape in correct position on the scale arm. An "L"-shaped end portion of the tray plate in hinged engagement with the base portion of the tray plate successfully prevents the used portion of the paper tape from urging against the remaining supply and thereby causing an inaccurate reading.
    Type: Grant
    Filed: February 21, 1980
    Date of Patent: April 6, 1982
    Assignee: Stenograph Corporation
    Inventors: Paul J. Fowler, Ralph E. Zum Bahlen
  • Patent number: 4322815
    Abstract: A cache store is provided in conjunction with a main store. Each location of the cache has a changed bit. A list is maintained of the addresses of those locations in the cache store which have been modified. When the list becomes full, the entry at the head of the list is read out and the corresponding data item is transferred from the cache to the main store. Thus, there are never more than a limited number of items in the cache awaiting transfer. To clear the cache of all modified items, each entry in the list is read out in turn and the corresponding items are transferred to the main store. The system reduces the amount of traffic between the cache and the main store and hence improves efficiency.
    Type: Grant
    Filed: April 21, 1980
    Date of Patent: March 30, 1982
    Assignee: International Computers Limited
    Inventor: Philip Broughton
  • Patent number: 4319474
    Abstract: Rolling plant for hot rolling metal workpieces comprises a reversing roughing mill, a continuous finishing mill spaced from the roughing mill and an intermediate coiler which can be retracted to an inoperative position clear of the pass-line. In the penultimate forward pass of the roughing mill, the coiler is in its inoperative position and the workpiece is rolled to a length greater than the coiler--roughing mill spacing but less than the finishing mill--roughing mill spacing, the leading end of the workpiece passing under the coiler. In the final forward pass, the coiler is in its operative position on the pass-line and effects coiling of the workpiece. Subsequently, the coil is uncoiled and led out to the finishing mill.
    Type: Grant
    Filed: March 10, 1980
    Date of Patent: March 16, 1982
    Assignee: Davy-Loewy Limited
    Inventor: Robert W. Gronbech
  • Patent number: 4310902
    Abstract: An information storage arrangement comprising two random access memories. While one memory is being used for normal read/write access, the other is automatically cycled through so that each location can be reset. When a "reset" command is received, the roles of the two memories are interchanged, so that the one which has just been reset is now used for normal read/write access. This provides a very rapid reset facility. The invention is of particular use for storing validity marker bits for data items in a slave store.
    Type: Grant
    Filed: April 21, 1980
    Date of Patent: January 12, 1982
    Assignee: International Computers Limited
    Inventor: Philip Broughton
  • Patent number: 4309163
    Abstract: This mould assembly for elastomers is of the type comprising a center block whose temperature is regulated. The block has means for injection of the elastomer into each mould cavity fed with elastomer by a nozzle of the injection device of the press. The center block has projections which are mounted on the block, or are part of the same material as the block, and project from two of opposite sides of the block. Small nozzles for directly injecting the elastomer into the mould cavities are detachably secured on the ends of the projections and adapted to cooperate with adjacent sections of at least two moulds in two or more sections which are disposed on the opposite sides of the center block. Means distinct from those of the block are provided for separately controlling the temperature of the projections and of the small nozzles. Means are provided for controlling the flow through the small nozzles. Means are provided for compensating for the expansion of the block and the moulds.
    Type: Grant
    Filed: June 26, 1980
    Date of Patent: January 5, 1982
    Assignee: Societe Lyonnaise de Ventilation Industrielle Solyvent-Ventec
    Inventor: Gerard Cottancin
  • Patent number: 4308417
    Abstract: An electrical sealing device consisting of a brush-like element comprising a plurality of flexible filaments (1) the majority of which are electrically conductive and are distributed substantially uniformly among the insulating filaments. The device can be used, for example, for electrically sealing around the edge of a door (6) of an equipment enclosure (5) so as to prevent electromagnetic interference from leaking into or out of the enclosure, or can be used for electrically sealing an aperture (9) through which wires (10) may pass.
    Type: Grant
    Filed: June 9, 1980
    Date of Patent: December 29, 1981
    Assignee: International Computers Limited
    Inventor: Sidney H. Martin
  • Patent number: 4295510
    Abstract: A tire chain assembly comprising a tire chain wherein the spaces between the links of the chain are, at least partly, occupied by a wear resistant elastomeric material such that the combination of the material and tire chain form a belt adapted to be removably located over a tire of suitable size.
    Type: Grant
    Filed: June 29, 1979
    Date of Patent: October 20, 1981
    Assignee: Dirk Marinus Brink
    Inventor: Garth Foxcroft
  • Patent number: 4289167
    Abstract: The disclosed delivery system delivers a supply of fluid under pressure through a plurality of outlet lines simultaneously at desired intervals. The system enables controlled, intermittent fluid flow without drippage, as needed in the application of dampening fluid to the ink roll or offset plate on the plate cylinder of an offset printing press or in the application of solvent in a blanket cylinder washing system. A single valve provides fluid flow control by utilizing a single piston to simultaneously open and close all flow lines.
    Type: Grant
    Filed: August 25, 1980
    Date of Patent: September 15, 1981
    Assignee: Ryco Graphic Manufacturing, Inc.
    Inventor: Thomas G. Switall
  • Patent number: 4286448
    Abstract: The invention relates to a control system for setting the crown and/or steer on the rolls of a cluster mill such that the adjustment collars are all driven together but substantially in the desired final ratio to one another throughout the movement. The control system derives a separate control signal for driving each eccentric collar. The circuits for deriving the control signals include means for deriving from crown and steer magnitude signals, a series of crown and steer datum signals, one for each collar, which are proportional to the respective magnitude signals in selected ratios, the crown ratios being preselectable by a selection means and means for progressively increasing the magnitude signals from zero to the desired value.
    Type: Grant
    Filed: November 13, 1979
    Date of Patent: September 1, 1981
    Assignee: Loewy Robertson Engineering Co. Ltd.
    Inventor: Geoffrey Houghton
  • Patent number: 4286374
    Abstract: A method of forming connection networks for an integrated circuit device, by forming an orthogonal array of grooves in a substrate, with the grooves of one array deeper than those of the other array; and by providing conductive strips at the bottoms of the grooves and at selected regions of the groove side walls which strips serve to provide a desired pattern of interconnections.
    Type: Grant
    Filed: February 11, 1980
    Date of Patent: September 1, 1981
    Assignee: International Computers Limited
    Inventor: Gerald H. Hantusch
  • Patent number: 4273542
    Abstract: A system for displaying or performing operations in a two-valued system comprising a plurality of devices each having at least one symbol, each symbol having iconicity, eusymmetry, and frame consistency so that said symbol is consistent with respect to a selected frame of reference, said symbol further being symmetry positional so that operations in said two-valued system can be displayed or performed by changing the orientation of said symbol symmetrically with respect to said frame. This frame of reference consists of four points in a Cartesian co-ordinate system, preferably defining a basic square. The symbols are preferably letter-shaped symbols which can be assigned a phonetic value.
    Type: Grant
    Filed: May 31, 1979
    Date of Patent: June 16, 1981
    Inventor: Shea Zellweger
  • Patent number: 4271099
    Abstract: An apparatus with a unique venturi construction and restriction structure, a liquid intake conduit and mixing chamber is provided for mixing virtually any liquid with any gas, and is particularly designed for efficient aeration of water, such as for use with aquariums and home aquaculture systems. The relative placement of different portions of the apparatus and relative sizes of the component parts are found to be a factor in improving efficiency. One embodiment, combining the unique restriction structure with a rough-edged ring inside the apparatus, is designed for excellent operation efficiency at liquid circulation pressures previously thought to be too low for incorporation of an aerating or intermixing device. The need for an additional intermixing pump is thereby eliminated and a high percentage of gas is dissolved in the liquid, compared to other similar use devices.
    Type: Grant
    Filed: October 1, 1979
    Date of Patent: June 2, 1981
    Inventor: Thomas S. Kukla
  • Patent number: RE30726
    Abstract: Certain blends or mixtures of polyethylene and ionomer resins are blow extruded to make a film having excellent linear tear properties in the direction of extrusion, which property is not found in films of either of the resins alone.
    Type: Grant
    Filed: October 9, 1979
    Date of Patent: September 1, 1981
    Assignee: Tower Products, Inc.
    Inventors: Norman J. Otten, Eldrige H. Presnell
  • Patent number: D261547
    Type: Grant
    Filed: May 29, 1979
    Date of Patent: October 27, 1981
    Inventor: W. Rod Parke
  • Patent number: D263366
    Type: Grant
    Filed: August 9, 1979
    Date of Patent: March 16, 1982
    Inventors: John R. Strenger, Steven D. Blanchard