Patents Assigned to Delta Scientific Corporation
  • Patent number: 11384493
    Abstract: A portable barricade includes a road plate, first and second support posts extending upward from end portions of the road plate, a barricade arm extending between the first and second support posts, and a lift coupled one of the end portions of the barricade arm and a corresponding one of the first and second support posts. Actuation of the lift is configured to slide the barricade arm relative to the first and second support members between a retracted position proximate to the road plate and a deployed position distal from the road plate.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: July 12, 2022
    Assignee: DELTA SCIENTIFIC CORPORATION
    Inventors: Harry D. Dickinson, David G. Dickinson, James John Burnett, Judy L. Manor
  • Patent number: 10941531
    Abstract: A portable bollard for arresting motion of a vehicle includes a post, a base plate coupled to the post, a top plate coupled to the post and spaced apart from the base plate along a length of the post, and a tapered member extending from a surface of the top plate facing the base plate to the post. The tapered member tapers from a wider end at the surface of the top plate to a narrower end at the post. The top plate is rotationally offset from the base plate.
    Type: Grant
    Filed: July 19, 2019
    Date of Patent: March 9, 2021
    Assignee: DELTA SCIENTIFIC CORPORATION
    Inventors: Harry D. Dickinson, David G. Dickinson, James John Burnett
  • Patent number: 10407852
    Abstract: A portable bollard for arresting motion of a vehicle includes a post, a base plate coupled to the post, a top plate coupled to the post and spaced apart from the base plate along a length of the post, and a tapered member extending from a surface of the top plate facing the base plate to the post. The tapered member tapers from a wider end at the surface of the top plate to a narrower end at the post. The top plate is rotationally offset from the base plate.
    Type: Grant
    Filed: November 8, 2017
    Date of Patent: September 10, 2019
    Assignee: DELTA SCIENTIFIC CORPORATION
    Inventors: Harry D. Dickinson, David G. Dickinson, James John Burnett
  • Patent number: 4087214
    Abstract: An air supply system for supplying air to a periodically opened valve comprising a conduit for connecting the valve in continuous communication with a source of air and an expandable air storage chamber connected to the source of air and to the valve.
    Type: Grant
    Filed: December 24, 1975
    Date of Patent: May 2, 1978
    Assignee: Delta Scientific Corporation
    Inventors: Jack Kushner, Henry G. Zwirblis
  • Patent number: 4052904
    Abstract: A device for obtaining a relatively particle-free sample of liquid is disclosed. The device comprises a rotatable member having a planar fluid wettable collection surface. The rotating member is disposed within a trough through which a portion of the liquid to be tested passes, thereby resulting in the formation of a thin film of the liquid on the collection surface of the rotating member as it emerges from the liquid. A blade which bears against the collection surface is used to remove the liquid. In accordance with the preferred embodiment, a baffle is provided for deflecting particles floating on the surface of the liquid inside the trough away from the collection surface of the rotating member.
    Type: Grant
    Filed: November 28, 1975
    Date of Patent: October 11, 1977
    Assignee: Delta Scientific Corporation
    Inventors: Jack Kushner, Henry G. Zwirblis
  • Patent number: 4033482
    Abstract: A device for precisely metering out quantities of fluids is disclosed. The device comprises a tapered rotor having a plurality of chambers, each of the chambers having first and second openings. The rotor is received within a housing and together with the housing cooperates to perform the metering function as the rotor is rotated with respect to the housing. The housing has a plurality of input and overflow ports corresponding to the chambers in the rotor. These ports are positioned with respect to the rotor in such a manner that when a corresponding input port is in communication with one of said openings, its corresponding overflow port is in communication with the other of said openings. The housing also comprises a plurality of pressure ports and output ports which correspond to the plurality of chambers.
    Type: Grant
    Filed: November 20, 1975
    Date of Patent: July 5, 1977
    Assignee: Delta Scientific Corporation
    Inventors: Jack Kushner, Henry G. Zwirblis
  • Patent number: 4015914
    Abstract: A metering pump is disclosed wherein discrete, precisely measured quantities of fluid are caused, at predetermined intervals, to flow through a tubular conduit in the pump in response to the impingement of force or energy impulses against the wall of the conduit.
    Type: Grant
    Filed: May 18, 1972
    Date of Patent: April 5, 1977
    Assignee: Delta Scientific Corporation
    Inventors: Jack Kushner, Henry G. Zwirblis
  • Patent number: 3999945
    Abstract: An automatic liquid analyzing apparatus for quantitatively measuring the parameter of a liquid is disclosed. The preferred embodiment of the invention comprises means for automatically and continuously obtaining a relatively pure sample of the liquid to be analyzed. Discrete quantities of the sampled liquid are reacted with discrete quantities of chemical reagents in accordance with the reaction which one desires to conduct. The transmittance of the reacted sample is then compared to the transmittance of the unreacted sample to obtain a measure of the parameter which one desires to monitor.
    Type: Grant
    Filed: August 30, 1974
    Date of Patent: December 28, 1976
    Assignee: Delta Scientific Corporation
    Inventors: Jack Kushner, Henry G. Zwirblis
  • Patent number: D903906
    Type: Grant
    Filed: November 8, 2017
    Date of Patent: December 1, 2020
    Assignee: DELTA SCIENTIFIC CORPORATION
    Inventors: Harry D. Dickinson, David G. Dickinson, James John Burnett