Patents Represented by Law Firm DeLio and Montgomery
  • Solar energy collector having a convection current inhibiting member
    Patent number: 4147156
    Abstract: A solar energy collector housing having a transparent cover, and a solar energy absorbing panel in the housing beneath the cover, and including a transparent member having closed tubular air pockets positioned between the panel and the cover to inhibit convection currents therebetween.
    Type: Grant
    Filed: March 23, 1977
    Date of Patent: April 3, 1979
    Assignee: Sunworks, Inc.
    Inventor: Thomas P. Hopper
  • Lock for fire doors
    Patent number: 4145900
    Abstract: A surface mounted rim type lock set assembly for use on fire doors wherein a latch bolt is adapted for release by operation of a cross-bar on one side of the door and for release independently by manual operation of a lever-type handle on the other side, the assembly including a locking slide which is held out of engagement with the handle hub by heat responsive means adapted to release the slide when a portion of said means is melted. Normal locking and unlocking of the handle is effected by a key in a cylinder lock.
    Type: Grant
    Filed: November 21, 1977
    Date of Patent: March 27, 1979
    Assignee: Walter Kidde & Company, Inc.
    Inventor: Richard J. Ohno
  • Reciprocating saw
    Patent number: 4145811
    Abstract: A reciprocating blade saw wherein the counterbalancing of the drive system includes the provision of two directly opposed and coaxial rams, one attached to the saw blade and the other having a mass equal to the first ram plus the blade, both being attached to a crankshaft by links which have their masses symmetrically distributed. The crankshaft is driven by a hydraulic motor, and all the masses are so matched that the saw is in balance at all speeds and can be operated at high speeds with minimal vibration. The saw is designed for use particularly in the meat industry.
    Type: Grant
    Filed: October 31, 1977
    Date of Patent: March 27, 1979
    Assignee: Jarvis Products Corporation
    Inventor: Leo J. Kendzior
  • Timed ejector for a header
    Patent number: 4145784
    Abstract: An ejector mechanism associated with the punch or punches in a header, operable to free the work blank from the punch after a heading blow so that the blank may remain in the die for a further forming blow, the mechanism including timing means to insure actuation of the ejector at the moment when the punch starts its withdrawal movement, as well as clearing of the ejector to prevent transmission of a load to the ejector mechanism on the heading blow.
    Type: Grant
    Filed: September 15, 1977
    Date of Patent: March 27, 1979
    Assignee: Textron Inc.
    Inventors: Robert F. Mitchell, Donald A. Roy
  • Cassette control mechanisms for magnetic cassette type recorders
    Patent number: 4145727
    Abstract: The cassette receiving chamber in a cassette tape recorder is constructed on a movable support that can elevate and lower the cassette into and out of the operating position while maintaining the cassette in a stable constant orientation. It is constructed of two substantially identical U-shaped elements that cross legs in shifting the chamber in the fashion of scissors.
    Type: Grant
    Filed: September 6, 1977
    Date of Patent: March 20, 1979
    Assignee: SPEM-Societa Prodotti Elettroni Meccanici a.r.l.
    Inventor: Domenico Tuninetti
  • Zoom lens
    Patent number: 4145115
    Abstract: A zoom lens having a semi-field angle of between 12.6.degree. and 6.3.degree. capable of focusing at a 1:2 image-to-object distance ratio while providing a comfortable working range. The lens comprises a movable focusing group, a second stationary compensating group, two zooming groups which move axially relative to the lens and differentially of each other, and a fifth rear master group.
    Type: Grant
    Filed: March 23, 1977
    Date of Patent: March 20, 1979
    Assignee: Vivitar Corporation
    Inventor: Ellis I. Betensky
  • Disposable core for lock cylinder
    Patent number: 4143531
    Abstract: A disposable plug assembly to be used as a substitute for the removable core in a lock cylinder, as during the construction of a building, prior to installation of the final cores, the disposable core including a part which can be used to operate a cam or tail on the cylinder for actuating a latch bolt.
    Type: Grant
    Filed: December 28, 1977
    Date of Patent: March 13, 1979
    Assignee: Walter Kidde & Company, Inc.
    Inventor: Alfred E. Floyd
  • Mould polishing machines
    Patent number: 4143489
    Abstract: A polishing machine comprises a vertically movable surface on which is mounted a driving motor for rotating a support supporting on an axis of oscillation the gearbox an electric motor associated with an eccentric means urging the said motor to pivot on the axis of oscillation, the output shaft of the motor being provided with a spindle carrying a work tool normally occupying an eccentric position relative to the axis of the support. The machine has application in the polishing of the internal impression of a mould.
    Type: Grant
    Filed: May 12, 1977
    Date of Patent: March 13, 1979
    Assignee: Societe Nouvelle Industrielle & Commerciale d'Applications Mecaniques-S.O.N.I.C.A.M.
    Inventor: Roger Sogner
  • Plant potting system
    Patent number: 4142324
    Abstract: A plant potting system providing a pot to facilitate rapid and safe transplants of plants to a layer pot. The system includes a pot and liner rotatable with respect to each other, both the pot and liner have apertures formed therein in opposition when the pot and liner are in one position, and in alignment when they are in a second position rotated with respect to the first position to permit the plant roots to extend therethrough.
    Type: Grant
    Filed: February 16, 1978
    Date of Patent: March 6, 1979
    Inventor: Don Magyar, Jr.
  • Welded armor cutting tool
    Patent number: 4142290
    Abstract: A tool for cutting electrical cable of the welded type, the tool including a circular saw blade, means for holding the cable armor against the blade, means for adjusting and limiting the penetration of the blade into the armor, and means for rotating the saw blade combined with means to propel the tool along the cable whereby the tool makes a longitudinal cut through the armor, of any desired length.
    Type: Grant
    Filed: November 7, 1977
    Date of Patent: March 6, 1979
    Inventor: Lucien C. Ducret
  • Multi-layer plating for improved corrosion resistance
    Patent number: 4143210
    Abstract: A multi-layer plating and method are provided for improved corrosion resistance of ferrous metal substrates and articles made therefrom. The multi-layer plating comprises a metallic coating comprising a layer of zinc or cadmium and a layer of tin, each of which are preferably between 0.00001 to 0.001 inches in thickness, followed by a layer, preferably between about 0.0001 to 0.000001 inches in thickness of either chromium or a metallic chromium substitute. The method comprises plating, and preferably electroplating, the aforementioned layers of metal over an article having ferrous metal base stock to obtain improved corrosion resistance.
    Type: Grant
    Filed: September 30, 1977
    Date of Patent: March 6, 1979
    Assignee: Whyco Chromium Company, Inc.
    Inventors: Jacob Hyner, Stephen Gradowski
  • Zoom lens with movable diaphragm
    Patent number: 4141636
    Abstract: A mechanism for a zoom lens of the type in which the aperture defining diaphragm mechanism moves axially of the lens and changes the position of the exit pupil, where the mechanism modifies the aperture with changing focal length to maintain constant relative aperture at full relative aperture and further predetermines the stop down of the diaphragm mechanism as a function of selected relative aperture and focal length.
    Type: Grant
    Filed: December 15, 1976
    Date of Patent: February 27, 1979
    Assignee: Vivitar Corporation
    Inventor: Masatoshi Shimojima
  • Electrical contact and method of making same
    Patent number: 4139256
    Abstract: An electrical contact with a cylindrical bore having an internal pressure finger and two external retaining louvers, made from a blank of sheet metal wherein the outlines of each finger and louver are stamped as U-shaped cuts spaced in separate rows, the blank then being folded along a line between the respective rows and rolled into cylindrical form with the pressure finger on the inside and retaining louvers on the outside.
    Type: Grant
    Filed: September 15, 1977
    Date of Patent: February 13, 1979
    Assignee: North American Specialties Corp.
    Inventor: Jack Seidler
  • Swing brake system
    Patent number: 4138104
    Abstract: A playground swing mounting system wherein the side supports are at least partially in the form of rigid rods or tubes having their upper ends connected to the crossbar or other stationary mounting element by means of springs. Each spring is enclosed within a short tube rigidly fixed on the stationary element and so proportioned that, at rest, the upper ends of the side supports are drawn by the springs far enough into the short tubes to prevent free movement of the swing seat, thus constituting a brake; the weight of a passenger on the seat extends the springs and pulls the side supports down to a free swinging position.
    Type: Grant
    Filed: June 9, 1977
    Date of Patent: February 6, 1979
    Inventor: William C. D'Amicis
  • Method of retreading a pneumatic tire
    Patent number: 4137112
    Abstract: A method of retreading a pneumatic tire. The tire casing is buffed to a predetermined profile to remove the old tread. A cushion layer having an integral belt disposed therein is wrapped circumferentially around the casing and attached thereto. A precured tread having an integral belt disposed therein is wrapped circumferentially over the cushion and attached to the casing and cushion. The tire is cured to form a unitary structure.
    Type: Grant
    Filed: July 22, 1977
    Date of Patent: January 30, 1979
    Assignee: The Hercules Tire & Rubber Company
    Inventor: John A. Hedlund
  • Cyanide-free zinc plating bath and process
    Patent number: 4134804
    Abstract: An improved non-cyanide, alkali type zinc plating bath and method is provided, wherein a water-soluble polyamine sulfone compound and a quaternary pyridine compound are added to the zinc plating bath, which is thereafter subjected to electro-deposition conditions and wherein the polyamine sulfone is represented by the general formula ##STR1## WHEREIN EACH OF R.sub.1 and R.sub.2 is a member selected from the group consisting of hydrogen, an allyl group, straight-chain and branched-chain alkyl groups each having 1 to 16 carbon atoms, an aralkyl group, and hydroxyalkyl groups of the general formula HO --CH.sub.2) m, where m is an integer of 1 to 6;X.sup.- is a member selected from the group consisting of halogen ion, HSO.sub.4.sup.-, HSO.sub.3.sup.-, HCOO and CH.sub.3 COO.sup.
    Type: Grant
    Filed: August 29, 1977
    Date of Patent: January 16, 1979
    Assignee: Enthone, Incorporated
    Inventors: Joseph A. Zehnder, Terry K. Stevens
  • Ground fault circuit interruptor test apparatus
    Patent number: 4135129
    Abstract: An electrical testing device adapted to open a circuit upon reaching a predetermined leakage current, including means for generating a leakage current, switching means for applying the leakage current to an electrical circuit and time control means operative to limit the leakage current to the circuit so as to alter the time current characteristic of the leakage current.
    Type: Grant
    Filed: February 10, 1977
    Date of Patent: January 16, 1979
    Inventors: John K. Johnston, Frederick A. Edwards
  • Method and apparatus for measuring the corrosion current of an immersed structure provided with a cathodic protection device
    Patent number: 4134059
    Abstract: The invention relates to a method and apparatus for measuring the corrosion current of an elongated structure immersed in a fluid and provided with a cathodic protection device, the apparatus comprising at least one closed magnetic circuit immersed in the fluid and orientated so that a certain amount of electric current can pass therethrough, a coil on this magnetic circuit, measuring means connected to the terminals of this coil and modulation means (perforated rotating disc) for periodically varying, in time, the quantity of electric current circulating through the magnetic circuit. The invention is applied more particularly to the surveillance of underwater pipe-lines.
    Type: Grant
    Filed: June 7, 1977
    Date of Patent: January 9, 1979
    Assignee: Societe Intersub Developpement
    Inventor: Alain Stankoff
  • Ribbon slitter
    Patent number: 4133109
    Abstract: A slitting device for subdividing longitudinally a ribbon wherein blades are mounted in a housing in positions to slit into two or more narrow strips a ribbon which is pushed endwise into a selected slot in the holder.
    Type: Grant
    Filed: August 8, 1977
    Date of Patent: January 9, 1979
    Inventor: Robert E. Dow
  • Solar energy collector
    Patent number: 4131111
    Abstract: A solar energy collector in which one or more sheets of thin transparent material are positioned in the collector housing. The sheets are tensioned on frames which are supported within the housing and the uppermost frame supports a glass cover member.
    Type: Grant
    Filed: February 28, 1977
    Date of Patent: December 26, 1978
    Assignee: Sunworks, Inc.
    Inventor: Thomas P. Hopper