US PATENT SUBCLASS 313 / 269
.~ With vibration damping device


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



313 /   HD   ELECTRIC LAMP AND DISCHARGE DEVICES

238  DF  WITH SUPPORT AND/OR SPACING STRUCTURE FOR ELECTRODE AND/OR SHIELD {9}
269.~ With vibration damping device


DEFINITION

Classification: 313/269

(under subclass 238) Devices which have in addition to the supporting and/or spacing structure for the electrodes, means to damp mechanical vibrations of an electrode or an electrode support.

(1) Note. The means provided is sometimes a weight mounted upon the electrode or electrode support so as to give the electrode a greater mass so that the vibrations are damped.

(2) Note. Where the vibration damping means involves only the structure of the electrode or the electrode supporting means, such as providing either rigid or resilient supporting means or making the electrode or its support of a specific shape, the patent is not classified in this subclass, but will be found in subclass 238 or one of the other subclasses indented under subclass 238.

SEE OR SEARCH THIS CLASS, SUBCLASS:

50, for devices under the class definition which are provided with a detachable electric connector (e.g., socket) or support which includes resilient supporting means for the lamp or discharge device or which is provided with vibration damping means.

SEE OR SEARCH CLASS

188, Brakes, for miscellaneous means for retarding the motion of moving mechanism by friction, by positive engagement of elements or by the internal resistance of a fluid or a field of force. See especially 378+, for structures which include a weight designed for attachment to a moving member to damp the vibrations of the member.

248, Supports,

560+, for miscellaneous resilient supports.