Patents Represented by Law Firm Webb, Burden, Zeisenheim & Webb
  • Patent number: 5308487
    Abstract: A device for separating liquid and solid material from a mixture consists of an endless filter belt, beneath which is arranged a suction box connected to a vacuum device. The suction box supports the filter belt. The filter belt moves continuously while the suction box performs a reciprocating movement in the direction of the filter belt. In order to make possible the reciprocating movement of the suction box the connection of the suction box to the stationary vacuum device is embodied as a telescopic connection consisting of a stationary part connected to the vacuum device and a part connected to the suction box and slidably movable in the stationary part.
    Type: Grant
    Filed: April 24, 1992
    Date of Patent: May 3, 1994
    Assignee: Pannevis B.V.
    Inventor: Karel A. Thissen
  • Patent number: 5052861
    Abstract: A mine roof anchor assembly usable with a quick-setting resin cartridge inserted into a mine roof opening is disclosed and includes a partially threaded elongated bolt having a first end, a mechanical anchor, such as a bail-type or mechanical expansion type, at a threaded end, and a mixing element, such as a coil, having an upper end attached to the bolt and positioned external of and surrounding a length along the bolt. The bolt receives a frangible hollow plastic sleeve which is positioned about the threaded portion and extends below the mechanical anchor toward the bolt head. A stopping element attaches to the bolt below the mechanical anchor toward the first end, whereby the frangible sleeve is sandwiched between the stopping element and the mechanical anchor. A shaft can also be coupled to the first end extending the length of the anchor assembly.
    Type: Grant
    Filed: April 16, 1990
    Date of Patent: October 1, 1991
    Assignee: H&S Machine & Supply Co., Inc.
    Inventor: Edward C. Hipkins, Sr.
  • Patent number: 5012473
    Abstract: A laser adapted to operate at a constant, predetermined wavelength includes the following elements disposed in order within a laser cavity and aligned along the path of light flow therethrough: a highly reflective rear mirror, a halfwave plate, a Brewster window, an active laser medium, and an output coupler. The halfwave plate is designed to rotate incident light beams by 180.degree. at the predetermined wavelength and to rotate incident light beams by an amount other than 180.degree. at wavelengths other than the predetermined wavelength. In a preferred embodiment, the Brewster window is a thin film polarizer designed for the predetermined wavelength.
    Type: Grant
    Filed: December 13, 1989
    Date of Patent: April 30, 1991
    Assignee: II-VI Incorporated
    Inventor: Herman E. Reedy
  • Patent number: 4924780
    Abstract: A rail car enclosure having a bottom deck, sidewalls and a curved roof defined by at least one slope on each side connecting a flat top of the roof with the sidewalls and the deck connecting the opposite end of each sidewall to form an open end of the rail car. At least one intermediate deck extending between and connecting the sidewalls. An upper track mounted on the uppermost intermediate deck and a bottom track mounted on the bottom deck such that the upper track and bottom track curve around the sidewalls of the rail car. A plurality of panels hinged together at the marginal edges thereof to form a left and right door to slide on the upper and bottom curved tracks between a closed and stowed position. The doors parallel to the exterior of the sidewalls in the stowed position and standing substantially in one plane to fill the open end of the rail car in the closed position.
    Type: Grant
    Filed: July 12, 1988
    Date of Patent: May 15, 1990
    Assignee: Trinity Industries, Inc.
    Inventor: James D. Hart
  • Patent number: 4870037
    Abstract: The invention is directed to a lining composition for submerged entry pouring nozzles and like shapes used in the continuous casting of metals, particularly aluminum killed, low carbon steels. The lining prevents harmful buildup of alumina and other oxides within the nozzle bore which may cause premature nozzle clogging. The nozzle liner comprises a carbon-bonded, SiAlON-graphite refractory material. Small amounts of antioxidants and additional amounts of less expensive refractory grain or powder are also added to dilute the more expensive SiAlON material.
    Type: Grant
    Filed: September 23, 1987
    Date of Patent: September 26, 1989
    Assignee: Vesuvius Crucible Company
    Inventors: Dale B. Hoggard, Han K. Park
  • Patent number: PP7084
    Abstract: The new cultivar is generally characterized by its superior compact growth and flowering. The pink bloom contrast nicely with the rich green foliage. The inflorescence is long lasting with continuous bud protection.
    Type: Grant
    Filed: September 29, 1988
    Date of Patent: December 26, 1989
    Assignee: Oglevee Ltd.
    Inventor: Jan Man