Patents by Inventor Mark B. Eisen

Mark B. Eisen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5974624
    Abstract: The invention provides a wet vacuum accessory for a domestic vacuum cleaner that separates liquid droplets from the suction airstream before the airstream is drawn into the vacuum cleaner intake hose. A suction intake passage is formed between a pair of baffles, which discharges the airstream into a reservoir that is isolated from the airflow outlet of the accessory body by the baffles. The reservoir is provided with a relatively large cross sectional area, which reduces the suction airstream velocity sufficiently to allow liquid entrained in the airstream to fall into the reservoir before the airstream is drawn out of the accessory into the vacuum cleaner intake hose. In the preferred embodiment a hollow handle of the accessory is provided for connection to the vacuum cleaner intake hose.
    Type: Grant
    Filed: April 18, 1997
    Date of Patent: November 2, 1999
    Inventor: Mark B. Eisen
  • Patent number: 5327855
    Abstract: The invention provides an aquarium configured with its front and rear walls converging toward the top so that at tabletop or countertop height the viewer can comfortably view the aquarium from an ordinary standing position without bending over. From this viewing position the viewer cannot see through the rear face when the aquarium is filled with water, because the viewer's line of sight is at a sufficient angle that internal reflection occurs.
    Type: Grant
    Filed: June 23, 1993
    Date of Patent: July 12, 1994
    Inventors: Rodney R. Pritchard, Mark B. Eisen
  • Patent number: 4591696
    Abstract: An electric soldering gun of the type having a resistance heating element defining a soldering tip and extending outwardly from a pair of cylindrical terminal posts projecting from the front end of a cylindrical housing and further having a handle extending downwardly from the housing is provided at the upper front end with a trigger operated switch for selectively energizing the heating element and a light at the front end of the housing for illuminating the soldering tip. A clamping device cooperative with the soldering tip is provided for clamping the work being soldered during use of the soldering gun. The clamping device includes a clamping member pivotally supported on one of the terminal posts and having a clamping tip movable toward and away from the soldering tip.
    Type: Grant
    Filed: September 26, 1984
    Date of Patent: May 27, 1986
    Inventor: Mark B. Eisen
  • Patent number: D356403
    Type: Grant
    Filed: June 23, 1993
    Date of Patent: March 14, 1995
    Inventors: Rodney R. Pritchard, Mark B. Eisen