Abstract: The present invention shows a fish cleaning device comprising a cleaning board member with a work surface upon which a fish to be cleaned may be disposed during cleaning. The board is provided with a means to grip the fish during the cleaning operation. A knife slot is also provided to keep a knife in a convenient location for use. In addition, the board is also provided with a knife holder, to store the knife during transportation and storage. The fish cleaning device is also provided with a refuse collection member, which may be mounted and demounted on the cleaning board, and which may have a refuse collection bag attached, into which the refuse of a fish cleaning operation may be conveyed.

Abstract: A method and apparatus for preventing automobile theft which includes structure for rendering the front windshield, or all the windows of the automobile, opaque. The opaqueness may be caused either by mechanical means, or alternatively, by utilizing liquid crystals or similar media, energized by electric fields.

Abstract: An abrasion resistant pattern is provided. This pattern is composed of a pattern and a paint film coated thereon, which film includes about 5% or more by volume of powder material having a New Mohs' hardness of 6 or more. This pattern can bear the repeated impact of the casting sand, and can be used to lower casting costs.

Abstract: The present invention shows a cleaning system for dislodging the collected dust from filter media in a low pressure high capacity gas stream filter. In the preferred embodiment, pressurized gas from an external tank is ducted through a revolving arm which stretches radially across a pie-shaped segment of a tube sheet separating a clean gas plenum from a dirty gas plenum in a bag collection gas filtration system. The ducted gas is intermittently discharged from the rotating arm through multiple orifices into a venturi contained within the openings in the tube sheet as these orifices are above the individual filter elements.

Abstract: An operation apparatus for a sewing machine has an electric motor for driving the sewing machine and electronic components for operating and controlling the electric motor and sewing machine; the electric motor and electronic components are accommodated within a common, heat-conductive box-type body effective to dissipate the heat generated inside the body by the electric motor and the electronic components to the outside.

Abstract: A control unit for an electric drive motor of industrial processing machinery includes a control arrangement which drives a pair of magnets generating a magnetic flux and a Hall effect sensor disposed between the magnets so as to be swept by the magnetic flux rotatively with respect to each other; the Hall effect sensor outputs an electric signal which varies consistently with the position setting of the control arrangement and drives the electric motor accordingly; the movement of the control arrangement is resisted by springs having different degrees of stiffness from one another; proper interaction can thus be established between the operator and the machine.