Abstract: Disclosed is an electrosurgical instrument including an end effector with a cartridge having an asymmetric cartridge body.

Abstract: A combination differential and static pressure switch utilized in a test system for detecting the occurrence of a differential pressure condition within the test system. The test system includes a valve assembly in flow communication with the pressure switch for determining the working pressure applied to a workpiece being tested. The pressure switch includes a first tubular-shaped member and a second tubular-shaped member axially aligned therewith and adapted for removable securement to the first tubular-shaped member. A differential piston is disposed for slidable reciprocal movement within the first tubular-shaped member and a preset piston is disposed within the second tubular-shaped member and is adapted for slidable reciprocal movement therein. Both pistons are axially aligned to each other, and the differential piston has a magnet mounted to the face end thereof.

Abstract: A hydrostatic test system for subjecting a workpiece or test specimen to a predetermined test pressure until the workpiece fails by developing a leak detectable by the test system. The hydrostatic test system is a modular system readily adaptable to, and able to incorporate therein, a number of different physical devices for regulating, controlling, detecting, and registering functions and activities pertaining to leak detection. Among the devices adaptable in the hydrostatic test system for detecting a leak condition in the workpiece is a differential pressure switch and a static pressure switch, a combination differential and static pressure switch, or an accumulator associated with either a pressure transducer or a high accuracy transducer. The leak condition may be visually signaled by a lamp or indicator light or the sensing of a leak condition may be visually output to a CRT screen.