Patents by Inventor Mary Wang

Mary Wang 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: 5605086
    Abstract: A compound miter saw comprises a base, an arm rotatingly connected thereto about a horizontal plane, and a pair of adjustable vertical saw supporting members on either end thereof. The improvement thereof comprises a plurality of longitudinally aligned rows of projections formed on the support surface of the base. A workpiece can be supported at an elevated angle along the support surface wherein one side thereof rests against a guide plate along one side of the base and an adjoining corner portion is ensconced between a selected pair of adjacent rows. Each pin of adjacent rows of projections provides a unique elevation angle.
    Type: Grant
    Filed: March 14, 1995
    Date of Patent: February 25, 1997
    Inventors: Hsieh Huang-Mo, Mary Wang
  • Patent number: 5575191
    Abstract: A saw equipment includes a working table, a rotary arm unit, a hacksaw, two guide units, two adjusting members, and two locking units. The rotary arm unit includes a rotary arm mounted pivotally on the working table, and two upright positioning plates respectively secured to two end portions of the rotary arm. Each of the positioning plates has a plurality of angularly equidistant engaging holes formed therein. The guide units are capable of holding and guiding the hacksaw. The adjusting members are connected respectively to the guide units. Each adjusting member has a lock block movably contacting a respective one of the positioning plates. Each lock block has an engaging nose projecting therefrom to engage removably and selectively one of the engaging holes of a corresponding one of the positioning plates for adjustment of an inclining angle of the hacksaw relative to a horizontal plane.
    Type: Grant
    Filed: June 6, 1994
    Date of Patent: November 19, 1996
    Inventor: Mary Wang
  • Patent number: 5392679
    Abstract: A saw equipment includes a working table, a rotary arm unit, two adjustment members, a lock unit, a hacksaw, and a guide unit. The rotary arm unit has a rotary arm mounted pivotally on the working table, and two positioning plates respectively secured to two ends of the rotary arm. Each of the positioning plates has several angularly equidistant engaging slots formed therein. Each of the adjusting members includes a lock block and two parallel rods extending upward from the lock block. Each of the lock blocks has several angularly equidistant engaging tongues which engage a first set of the engaging slots of the corresponding positioning plate. The lock unit locks the adjusting members releasably on the rotary arm unit. The guide unit is vertically movable on the adjusting members so as to guide the saw blade to reciprocate on the adjusting members along a straight path.
    Type: Grant
    Filed: August 3, 1993
    Date of Patent: February 28, 1995
    Inventor: Mary Wang