Abstract: A mounting insulator for securing a pipe, conduit, or tube through a metal wall stud or other thin planar surface to reduce the noise of water hammer and dialectic interaction between the pipe and the wall stud, the device including an off-center pipe receiving passage which allows for adjustable positioning of a pipe axis relative to the stud aperture axis.The device is comprised of a substantially annular, somewhat flexible ring having a radial slot allowing the annular body to be spread apart and an interior circular passage, the central axis of which is offset relative to the axis of the annular ring. The circular passage includes a flexible wall portion which allows for a snug fit when a pipe is received therein. The device further includes a raised peripheral barrier and a plurality of flanges which cooperate to allow the device to be locked tightly in an aperture in a metal wall stud.

Abstract: A pressure gas engine such as compressed air turbine in which gas flow to a pressure responsive rotor is controlled by a movable valve that is operated by a bellows with means connecting each side of the bellows to the gas in the turbine for substantially equal gas pressure on both the inside and the outside of the bellows. There is also provided a speed control member that closes the gas inlet but that can be opened to any desired degree to achieve a desired speed. A bleed line leads from one side of the bellows so as to regulate the pressure on that side and a speed responsive throttle valve is provided to meter the amount of flow through the bleed line thereby maintaining the desired speed dependent upon the setting of the main supply valve.