US PATENT SUBCLASS 338 / 2
STRAIN GAUGE TYPE


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

Internet Version by PATENTEC © 1999      Terms of Use



338 /   HD   ELECTRICAL RESISTORS

2STRAIN GAUGE TYPE {4}
3  DF  .~> With temperature compensation
4  DF  .~> Fluid- or gas pressure-actuated
5  DF  .~> Dynamometer type
6  DF  .~> Extensometer type


DEFINITION

Classification: 338/2

(under the class definition) Subject matter wherein a flexible or deformable solid mass of resistance material is formed as a wire, strip, or other elongated mass, the resistance value of the mass between points along its length changing with deformation between the points, as a change in length or cross-sectional area; the wire, strip, or other elongated mass being shaped or configured to be applied to a device which is subject to deformation in a direction along the length of the elongated mass, the mass being adapted to deform with the device; or wherein the wire, strip, or other elongated mass includes structure, such as adhesive material

on a flexible base, for facilitating application to the device which is subject to deformation; or wherein the wire, strip, or other elongated mass is combined with and deformable with a device which is subject to deformation or other change in dimension and not otherwise classifiable.

(1) Note. As between this subclass and Class 73, Measuring and Testing, when the meter, Wheatstone bridge connection, or other current measuring device in series with the resistor is claimed, classification is in Class 73.

SEE OR SEARCH THIS CLASS, SUBCLASS:

13+, for variable resistors generally actuated by a condition sensing device.

114, for deformable resistors generally.

SEE OR SEARCH CLASS 33, Geometrical Instruments,

125+, for distance determining devices; subclasses 174+ for limit gauges; and subclasses 204+ for direction indicators.

73, Measuring and Testing,

763+, for an electrical stress or strain measuring system; and subclasses 862+ for dynamometers. See also (1) Note above.