Patents Assigned to M.U. Engineering & Manufacturing Inc.
  • Rhodium coated mold
    Patent number: 4690370
    Abstract: A novel coating (34) is provided on a member (24) which may be part of a mold (24). Plastic articles (10) which are made by injection molding within such a mold (24) can have a very smooth surface by replication of the surface coating (34). This allows the production of so-called rigid discs with a plastic core in place of the present day aluminum cores.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: September 1, 1987
    Assignee: M. U. Engineering & Manufacturing, Inc.
    Inventor: James R. Skinner
  • Plastic lens cell
    Patent number: 4488776
    Abstract: An improved lens cell is provided wherein a pair of identical housing elements cooperate with an aperture member that has a surface configuration to both space and center lens elements that are retained within the housing elements.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: December 18, 1984
    Assignee: M.U. Engineering & Manufacturing Inc.
    Inventor: James R. Skinner
  • All plastic projection lens assembly with aspheric surface
    Patent number: 4240701
    Abstract: An all plastic lens assembly having a lens cell or housing and at least four separate airspaced lens elements mounted in the cell or housing, the lens elements are formed of plastic and at least one of the lens elements has an aspheric surface.
    Type: Grant
    Filed: June 12, 1978
    Date of Patent: December 23, 1980
    Assignee: M.U. Engineering & Manufacturing, Inc.
    Inventor: John D. Lytle
  • Mirror construction and method for making the same
    Patent number: 4193668
    Abstract: Mirror construction formed of a wedge of plastic having two planar surfaces with a reflecting mirror formed on one of the surfaces and an abrasion resistant coating formed on the other of said surfaces.Method for injection molding a mirror in which the core portion of the mirror is molded from plastic and simultaneously there is laminated thereon on one side a plastic film carrying an abrasion resistant coating and on the opposite side a plastic film carrying a reflective surface so that after curing of the core, the three separate parts can be removed as an integral unit.
    Type: Grant
    Filed: June 28, 1978
    Date of Patent: March 18, 1980
    Assignee: M. U. Engineering & Manufacturing, Inc.
    Inventor: James R. Skinner
  • Flower pot construction
    Patent number: 4138803
    Abstract: Flower pot construction having a container formed of plastic, said container having a bottom wall and outwardly and upwardly extending generally frusto-conical side wall. A rim is formed integral with the upper extremity of the side wall and this is substantially in the form of an inverted U defining an annular recess underlying the rim. The bottom wall has a hole therein. A removable plug is disposed in the hole and forms a water-tight seal with respect to the hole. A disc-like member having drain openings therein is provided. Cooperative means is carried by the disc-like member in the container so that it is spaced above the bottom wall of the container.
    Type: Grant
    Filed: April 6, 1977
    Date of Patent: February 13, 1979
    Assignee: M.U. Engineering & Manufacturing Inc.
    Inventor: Hugh P. Sherlock