Abstract: An impact and vibration resistent receiver dehydrator for use in a refrigeration or air conditioning system includes a body (10) enclosing a desiccant core (24). The core includes a projection (32) at a first end and a flat face (38) at a second end. The projection is nested in a resilient core support (50) which in turn is supported by a spring loaded baffle plate (56). The resilient core support is positioned in a recess (58) in the baffle plate. The baffle plate includes a radially extending flange (60) which serves to hold the baffle plate and first end of the core in fixed position relative to the interior of said receiver dehydrator body. The face of the second end of the core is supported by a perforated disc (42). A compressible filter pad (46) is positioned between the disc and the core. The filter pad wraps around the edge (40) of the core and serves to space and cushion the core from the interior of the body.

Abstract: A bypass oil filter arrangement for a refrigerant compressor of a transport refrigeration unit is provided in which a minor portion of oil outputted by a positive displacement oil pump is fed through the filter 62 while the major portion of oil from the pump is fed through the pressurized lubricating system of the compressor as indicated by arrows 36, the oil being supplied from the high pressure pump cavity 52 which is also in communication with the pressure regulator bore 44 containing a special pressure regulator 92 having a low pressure side 90 to which oil is returned through conduit 66 from the filter 60.

Abstract: A reversible gerotor pump is shown which delivers a lubricant in a predetermined manner regardless of direction of rotation. The reversibility is provided by an eccentric collar having a cylindrical opening encircling the pump rotor and which is rotatable through a 180.degree. arc by frictional engagement with the rotor. To ensure this frictional engagement is greater than the frictional engagement between the collar and an adjacent stationary face plate which opposes rotation of the eccentric collar, the surface of the collar in facing engagement with the plate defines slight protrusions projecting therefrom. The protrusions abut the plate for a limited surface engagement therebetween and therefore provide limited frictional engagement. In this manner the friction between the collar and the stationary plate is minimized and the eccentric collar is relatively free to be rotated to either of two extreme positions within the 180.degree. arc depending upon the direction of the rotation of the rotor.