Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Indicator










Image Number 2 for United States Patent #7654220.

An indicator has a permanent magnet and a coil rotatably supported on the permanent magnet and wound so as to form a surface that is parallel to and disposed at a preselected distance from a bottom surface of the permanent magnet. The coil generates a torque by interaction with a magnetic field of the permanent magnet upon supply of a current to the coil. An indicator needle is mounted to undergo rotation with the coil through a range of angles corresponding to indicator angles of the indicator needle. A pair of spiral springs urge the indicator needle in a direction opposite to a direction of the torque to undergo rotation through the range of indicator angles. The pair of spiral springs comprise a first spiral spring connected at one end thereof to one end of the coil and a second spiral spring connected at one end thereof to another end of the coil. The first spiral spring is larger than the second spiral spring and is arranged on an outer peripheral side of and coaxially with the second spiral spring so that the first and second spiral springs lie on a common plane.








 
 
  Recently Added Patents
Memory with separate read and write paths
Three-dimensional holographic display using active shutter
Portable multimedia player
Modulation of HSP47 expression
Identification of protected content in e-mail messages
Resist composition and method for producing resist pattern
TC-83-derived alphavirus vectors, particles and methods
  Randomly Featured Patents
Diagnostic method
Trigger pump sprayer
High performance microcapillary gel electrophoresis
Particle accelerator having wide energy control range
Screen printing apparatus
Lactic acid derivative, liquid crystal composition containing same and liquid crystal device
Apparatus and methods of printing on an electrically writable medium
Mode decision using approximate 1/2 pel interpolation
Desk set
Camshaft phaser with independent phasing and lock pin control