With Ruler, Straight Edge, Or Holder Therefor Patents (Class 434/418)
  • Patent number: 6537079
    Abstract: A modular educational implement structure comprises a plurality of component units of the standardized size, design, shape, etc. the component units can be arranged or fitted together in a variety of ways so as to make the implement structure adaptable to various uses and functions.
    Type: Grant
    Filed: December 26, 2001
    Date of Patent: March 25, 2003
    Inventor: Shan-Ming Chen
  • Patent number: 5941713
    Abstract: A mobile marker board unit has a wheeled base which mounts a pair of upright and vertically enlarged marker boards. The marker boards, as they project upwardly, are rearwardly sloped to define a triangular storage space between the marker boards. This storage space is accessible from at least one end of the unit, and is preferably provided with structure which permits storage therein. A slidable tray arrangement is mounted adjacent the lower edge of each marker board and can be moved between open and closed positions. Each tray arrangement includes an outer tray disposed directly adjacent the lower edge of the marker board and positioned for support of articles thereon. This outer tray is fixedly joined to an enlarged inner tray which is normally stored in a closed position between the marker boards, with the tray assembly being slidable into an outer position wherein the inner tray projects outwardly from the marker board adjacent the lower edge thereof.
    Type: Grant
    Filed: June 6, 1997
    Date of Patent: August 24, 1999
    Assignee: Haworth, Inc.
    Inventors: Robert C. Wayner, Clarkson S. Thorp, Bryan R. Gingrich
  • Patent number: 5803741
    Abstract: An apparatus for inscribing braille characters includes a base, a composing ruler fixed to a front edge portion of the base, and a punching pen for inscribing braille characters on a paper sheet disposed slidably within the composing ruler. A rear edge portion of the base has a roller shaft journalled thereon and a rotatable abutment member which is disposed under the roller shaft in order to clamp the paper sheet between the roller shaft and the rotatable abutment member. Therefore, the paper sheet can be moved forward and backward by rotating the roller shaft.
    Type: Grant
    Filed: May 12, 1997
    Date of Patent: September 8, 1998
    Inventors: Jyh-Jeng Deng, Ming-Hung Sung
  • Patent number: 5577917
    Abstract: The means for generating a children's weekly interactive scrolling calendar apparatus comprises the use a wall mounted unit that has two vertical spindles mounted on a solid frame made of wood or the like. The spindle contain a roll of paper that is scrolled from one spindle to the other spindle and, at the same time, keeps the paper flat at all times by passing below retaining pieces at each end of the open central area of the apparatus. A sliding guide and indentation markings allows the children to set up a seven day week and record their activities throughout the week and then scroll up the week after it has been concluded. A new week is then prepared. The calendar can then be unrolled at the end of the semester or year and the activities can be reviewed. The apparatus can be replaceably attached to a wall. A method of generating the children's weekly interactive scrolling calendar is also disclosed.
    Type: Grant
    Filed: May 11, 1995
    Date of Patent: November 26, 1996
    Inventor: Susan E. Mock
  • Patent number: 5131849
    Abstract: A board apparatus is arranged for educational presentation of inter-relationship relative to atomic particles and their associated energy levels relative to interaction of such particles, wherein the board structure includes a central ferrous metallic base plate formed with a perimeter framework accommodating a plurality of ferrous metallic discs to simulate atomic particles such as electrons and their interaction relative to one another. A modification of the invention includes a dispenser housing mounted to a first side of the framework and a container housing mounted to a second side of the framework to provide for the respective dispensing of the discs and the storage of writing instruments.
    Type: Grant
    Filed: October 4, 1991
    Date of Patent: July 21, 1992
    Inventor: John J. Perrero