Resources Contact Us Home
Developer storage and dispenser apparatus

Image Number 2 for United States Patent #4739907.

A cylindrical developer storage and dispensing cartridge with a dispensing opening at one end has an integral developer transport mixing and antibridging member rotatably supported within the container which has a first coiled spring element having a cross section substantially the same as the cross section of the container and freely rotatable therein which is wound in the direction to transport developer along its length toward the dispensing opening and a second coiled spring element having a cross section substantially smaller than the first spring element but being substantially concentrically positioned and being attached to the first element but wound in a direction opposite to the first spring element to provide a counter rotating motion relative to the first spring element. The second spring element extends through the central portion of the first spring element and has longitudinal arms at each end attached to at least one of the coils at each end of the first spring element to provide support to the first spring element against compression.

  Recently Added Patents
Variants of a family 44 xyloglucanase
Semiconductor memory apparatus
Digital watermark embedding apparatus, digital watermark embedding method, and digital watermark detection apparatus
Information obtaining and notification, data message forwarding and handover method and access node
Dual-box location aware and dual-bitmap voltage domain aware on-chip variation techniques
Micro vein enhancer
Scanning of a touch screen
  Randomly Featured Patents
Combined bearing, rotatable member and shield assembly
Pultrusion process
Vent for food packaging
Method for determining the numerical value for the duration of a periodically repeated pulse signal, and device for carrying out said method
Fabrication of notched gates by passivating partially etched gate sidewalls and then using an isotropic etch
Sprayer shroud
Semiconductor chip transducer
Electronic apparatus in which an conductive layer on an outer surface of a housing is electrically connected to a conductive member in the housing
Polyester-amide-imide wire coating powder