Plural Cutting Edge Patents (Class 30/353)
  • Patent number: 4168698
    Abstract: The endocervical instrument of this invention comprises, generally, a handle and an elongated basket-like member removably mounted onto the handle. The basket-like member is elongated and generally of rectangular-shape as viewed in plan. The basket member has a wall surface defining an elongated cavity therewithin and an entrance into the cavity from one side of the basket member. One end of the basket member carries a blade means which preferably projects laterally with respect to the entrance to the elongated cavity of the basket member. The blade member projects laterally from the sidewalls defining the entrance to the cavity a sufficient distance to enable an endocervical tissue strip of approximately 1.5-2 mm., in depth, to be obtained as the blade member is drawn distally towards the external os of the endocervical canal.
    Type: Grant
    Filed: June 16, 1977
    Date of Patent: September 25, 1979
    Assignee: Professional Staff Association of the Los Angeles County Harbor General Hospital
    Inventor: Donald R. Ostergard
  • Patent number: 4074431
    Abstract: A disposable surgical knife assembly, a blade for use therein, and a method of manufacture thereof. The blade is manufactured in continuous strip form and may be separated from the strip along score lines in predetermined positions so as to provide the blade with a shape that facilitates accurate and automatic assembly into a holder. The holder is provided with a slot in the forward end to receive the rear portion of the blade, which may be retained in the slot by adhesives or by fusion of the holder material into suitable apertures in the blade. A portion of the blade projects laterally therefrom to facilitate adjustment of the blade position in the holder, said portion being readily broken off after completion of assembly.
    Type: Grant
    Filed: April 21, 1976
    Date of Patent: February 21, 1978
    Assignee: Rudolph Beaver, Inc.
    Inventors: John R. Beaver, George J. Kozlowski
  • Patent number: 3942591
    Abstract: A multi-purpose agricultural implement usable in one position for cutting roots of weeds just below the surface of the ground and simultaneously therewith pulverizing the upper crust of the earth; usable in a second position for cutting a furrow of any desired width or depth in the ground of planting seeds and fertilizing; and, usable in a third position for covering the furrow. The implement is comprised of a flat blade and a handle, the flat blade being of four sided construction with opposite sides of the blade being substantially parallel. The handle is attached to the upper surface of the blade and extends in a backward direction at a sidewise oblique angle with the upper surface.
    Type: Grant
    Filed: August 5, 1974
    Date of Patent: March 9, 1976
    Inventor: Jafie R. Brannin