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
Microporous membranes and methods for producing and using such membranes
Memory device having collaborative filtering to reduce noise
Circuit arrangement for a piezo transformer, and method therefor
Method and system for providing geohazard information to customers
Methods of enhancing diabetes resolution
Authentication platform and related method of operation
Touch sensing technology
  Randomly Featured Patents
Seafood physical characteristic estimation system and method
Electrochemical detection of single base extension
Composite penetrator
Apparatus for converting holes in a stack of overlapping leaves into arcuate passages
SIO stacked DRAM logic
High pressure low heat rate phosphoric acid fuel cell stack
Dosimeter for ionizing radiation
Vacuum cleaner
LED package with top and bottom electrodes
Nonvolatile floating gate semiconductor memory device