US PATENT SUBCLASS 335 / 15
.~.~ With contact biasing, holding or pressure control means

Current as of: June, 1999
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335 /   HD   ELECTRICITY: MAGNETICALLY OPERATED SWITCHES, MAGNETS, AND ELECTROMAGNETS

2  DF  ELECTROMAGNETICALLY ACTUATED SWITCHES {30}
6  DF  .~ Automatic circuit-interrupting devices (e.g., circuit-protective devices) {12}
15.~.~ With contact biasing, holding or pressure control means {1}
16  DF  .~.~.~> Magnetic or electrodynamic (e.g., blowon or blowoff)

DEFINITION

Classification: 335/15

(under subclass 6) Subject matter wherein the interrupting device comprises significant structure whereby the movable contact or contacts are biased either open or closed, the pressure between the contacts is controlled or regulated or by which the contacts are held in the operative condition and

which structure is separate and distinct from the conventional latching devices customarily in use.

SEE OR SEARCH THIS CLASS, SUBCLASS:

157+, for switching devices, not restricted to the automatic circuit opening function, having significant locking or holding structure.

188, for snap action contact actuating means.

192, for contact carrying on actuating structure with biasing means.

193, for contact actuators with vibration, bounce or chatter prevention means. 194+, for contact pressure maintaining or adjustment means.

SEE OR SEARCH CLASS

200, Electricity: Circuit Maker and Breakers, appropriate subclasses for similar contact biasing or holding means for nonmagnetically actuated switches, especially

170, for contact pressure adjustment switches.

307, Electrical Transmission or Interconnection Systems,

142, for miscellaneous switches having locking, holding or breaking means for the switch.

361, Electricity: Electrical Systems and Devices,

170+, for relay systems having relays with contact pressure increasing means, and subclass 194 for relay systems having relays with holding means such as a locking contact.