Resources Contact Us Home
Natural frequency adjustment for vibratory feeder

Image Number 3 for United States Patent #3964600.

An article feeder has a base and a frame mounted on the base with a bowl, which receives and dispenses articles, secured to the frame. The frame and bowl assembly constitute one mass of a two mass system, and the base constitutes the other mass of the system. Several sets of leaf springs are secured by clamps between the frame and the base to support the frame and bowl for rotational oscillation by a motor mounted on the base. The sets of leaf springs provide the total spring coupling between the frame and bowl assembly and the base. These sets of leaf springs are supported adjacent one clamped end thereof by adjustable supports that can alter the effective lengths of the leaf spring sets to change the torsional natural frequency of the two mass system in small increments without disturbing the clamps mounting the sets of leaf springs.

  Recently Added Patents
Semiconductor device, method of manufacturing semiconductor device, and electronic apparatus
Information storage medium, reproducing method, and recording method
Selenium/group 3A ink and methods of making and using same
Location-type tagging using collected traveler data
Audio and music data transmission medium and transmission protocol
Position and orientation measurement apparatus, position and orientation measurement method, and storage medium
Nuclear fuel assembly bottom nozzle
  Randomly Featured Patents
Top-entry check valve having retainer ring
Packet intrusion detection rule simplification apparatus and method, and packet intrusion detection apparatus and method using simplified intrusion detection rule
Gallium nitride-based compound semiconductor multilayer structure and production method thereof
Apparatus for fixing the hydraulic unit of an ABS and/or an ASR in the motor space of a street vehicle
Color signal processing with luminance signal correction
Swimming pool cleaner appendage
Alkylation of diphenyl oxide
Developing device for an image forming apparatus and toner cartridge
Multi-sided unitary body for reflective pavement marker
Isotropic polysilicon plus nitride stripping