US PATENT SUBCLASS 166 / 55.1
.~ With disparate below ground feature


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

Internet Version by PATENTEC © 1999      Terms of Use



166 /   HD   WELLS

55  DF  MEANS FOR PERFORATING, WEAKENING, BENDING OR SEPARATING PIPE AT AN UNPREPARED POINT {3}
55.1.~ With disparate below ground feature


DEFINITION

Classification: 166/55.1

(under subclass 55) Devices including a means for performing a function below ground level unlike and other than a function which directly contributes to the use of the device as a perforating, weakening, bending or separating device.

(1) Note. The means for performing an unlike function comprise, for example, means to collect a fluid sample, insert an orifice bushing in a pipe wall, insert treating fluid or cement into the well or grapple or otherwise remove an object from the well (unless the grappling or removing means also performs a function which is necessary to the perforating, weakening, bending or separating operation, such as grappling in order to activate cutting means, such grappling means being found in the following subclasses indented under subclass 55).

SEE OR SEARCH CLASS

175, Boring or Penetrating the Earth,

2+, for a device which fires a bullet or explodes a shaped charge for perforating a wall member in a bore which device inherently causes penetration of the formation, especially subclass 4.51 for such device which has a position indicating or orienting means and subclass 4.52 for such device which has a wall engaging packer or anchor. In accordance with the line between Classes 166 and 175, as set forth in the class definition of Class 175, Lines With Other Classes and Within This Class, and the definition of Class 175, subclass 2, a claim to an apparatus comprising a gun or shaped charge perforating means disclosed as inherently functioning to penetrate the earth is classifiable in Class 175, subclasses 2+ even if it also recites a disparate well feature. Thus, apparatus patents of this type are classified as originals in Class 175 and cross-referenced to Class 166, subclass 55.1 if appropriate while patents of this type with method claims are classified as originals in Class 166, subclass 35 and cross-referenced to a suitable apparatus subclass if appropriate.