Patents Assigned to Merrick Industries
  • Patent number: 6168305
    Abstract: System for controlling the discharge rate of a material feeder. A weight scale connected to the material is sampled and the samples input to a digital processor. The digital processor determines for consecutive time intervals during discharge of said material, a weight loss over the time interval. The weight loss for the interval is compared with a desired weight loss which is calculated from a desired setpoint material discharge rate obtained only when the weight loss is constant and stable. The resulting error is averaged with subsequent errors to form a control signal for the material feeder. The calculation of errors over each subsequent interval increases the resolution of the control signal, increasing the ability to control discharge rates to compensate for changes in material density which otherwise affect discharge rates.
    Type: Grant
    Filed: February 27, 1998
    Date of Patent: January 2, 2001
    Assignee: Merrick Industries, Inc.
    Inventor: Lars T. Marmsater
  • Patent number: 6113105
    Abstract: A rotary shaft bearing isolator seal where the shaft extends into dry comminuted material providing a stator having a very small tolerance between the rotor on the shaft and the stator containing downwardly sloping circular portions adjacent complimentary inwardly extending and outwardly extending portions of said rotor.
    Type: Grant
    Filed: May 11, 1998
    Date of Patent: September 5, 2000
    Assignee: Merrick Industries, Inc.
    Inventor: Norman R. Johnson
  • Patent number: 5103401
    Abstract: System for controlling the discharge rate of a material feeder. A weight scale connected to the material is sampled and the samples input to a digital processor. The digital processor determines for consecutive time intervals during discharge of said material, a weight loss over the time interval. The weight loss for the interval is compared with a desired weight loss which is calculated from a desired setpoint material discharge rate. The resulting error is averaged with subsequent errors to form a control signal for the material feeder. The calculation of errors over each subsequent interval increases the resolution of the control signal, increasing the ability to control discharge rates to compensate for changes in material density which otherwise affect discharge rates.
    Type: Grant
    Filed: November 21, 1989
    Date of Patent: April 7, 1992
    Assignee: Merrick Industries, Inc.
    Inventor: Norman R. Johnson
  • Patent number: 5005458
    Abstract: A pocket size inexpensive punch mechanism is provided to punch openings in paper objects, the punching teeth having a configuration especially adapted to produce sharp initial penetration of the paper object, followed by smoother cutting of the remainder of the opening.
    Type: Grant
    Filed: September 22, 1989
    Date of Patent: April 9, 1991
    Assignee: Merrick Industries, Incorporated
    Inventor: Robert G. Merrick
  • Patent number: 4917523
    Abstract: A pocket size punch mechanism is provided to punch openings in cards or card-like objects, the punched openings have a cross-sectional configuration and spacing matching the configuration and spacing of a pair of rails in a commonly available card file. Also shown is mounting structure for adapting cards and card-like objects for mounting in the same type of two rail card file. A plurality of mounting members of a stiff stock material are fabricated on a sheet, the mounting members being individually removable from the sheet as needed to form a member having openings conforming to the configuration of the card file rails. A portion of the mounting member has adhesive thereon to secure to the back of the item to be mounted.
    Type: Grant
    Filed: August 19, 1988
    Date of Patent: April 17, 1990
    Assignee: Merrick Industries, Inc.
    Inventors: Robert G. Merrick, John P. Merrick
  • Patent number: 4869143
    Abstract: A pocket size punch mechanism is provided to punch openings in cards or card-like objects, the punched openings have a cross-sectional configuration and spacing matching the configuration and spacing of a pair of rails in a commonly available card file.Also shown is mounting structure for adapting cards and card-like objects for mounting in the same type of two rail card file. A plurality of mounting members of a stiff stock material are fabricated on a sheet, the mounting members being individually removable from the sheet as needed to form a member having openings conforming to the configuration of the card file rails. A portion of the mounting member has adhesive thereon to secure to the back of the item to be mounted.
    Type: Grant
    Filed: July 27, 1988
    Date of Patent: September 26, 1989
    Assignee: Merrick Industries, Inc.
    Inventors: Robert G. Merrick, John P. Merrick
  • Patent number: 4627546
    Abstract: A handle for use in carrying and pouring from a plastic bottle comprises a single two-ended piece of flat flexible material possessing at one end means for attachment to a bottle neck and at the other end means for attachment to the bottle bottom. Between the two ends of material is formed a hand hold. The handle attaches to the bottle neck by use of two partially overlapping, nonconcentric openings the first of which slips over the bottle neck and collar and the second of which then snaps around the neck when the handle is tugged. The bottom employs a pair of integral stabilizing tabs extending inwardly of a bottle encompassing ring which upon insertion over the top of the bottle and movement downwardly over the bottle periphery extend both upwardly or one upwardly and one downwardly with respect to the ring, thus firmly gripping a lower part of the bottle.
    Type: Grant
    Filed: February 13, 1984
    Date of Patent: December 9, 1986
    Assignee: Merrick Industries
    Inventor: Jose R. Carranza