Abstract: A refrigeration apparatus enclosure structure wherein an inner laminate wall portion of the enclosure defines the inner sheet liner and insulation disposed within an outer cabinet portion of the enclosure and is secured to a portion of the cabinet wall with the sheet liner portion maintained spaced from the cabinet wall to provide thermal insulation therebetween. The laminate wall is secured to the cabinet by insulative support means extending through openings in the insulation to the sheet liner and means are provided for securing the sheet liner to the inner end of the insulative supports. The insulating supports may further support other elements within the enclosure inwardly of the sheet liner.

Abstract: A classifier for particulate material of the type wherein a stream of the particles to be classified is introduced into a moving stream of air, classification being achieved by the varying degree of entrainment of the particles in the air stream due to their difference in size. The classifier employs a closed housing having a plurality of outlets, each for a different size of particle, and an inlet located thereabove. An air impeller drives a current of air across the particle outlets. The housing is closed so that the air defining the stream is continuously recirculated. At a point in the air stream downstream of the outlets there is provided an enlarged chamber through which the air flows at an extremely low velocity to preclude particles from being entrained in the air to be carried back to the air impeller.

Abstract: A vacuum cleaner having a selectively positionable stop for retaining the handle structure in an intermediate position between an upright storage position and a lowered, operating position. The positionable stop may be carried on a pivoted casing associated with the handle structure and a cooperating shoulder element may be movably carried on the floor cleaning unit for engaging the intermediate stop. The shoulder element may be movably carried on the cleaning unit so as to pass the intermediate stop when desired.

Abstract: A structure for mounting an air moving apparatus in a vacuum cleaner including support shoulders formed integral with a housing portion of the vacuum cleaner and a spring bracket removably supporting the air moving apparatus on the shoulders within an air flow passage. The bracket embraces the air moving apparatus and defines opposite end portions resting on the support shoulders.

Abstract: A pressure gas engine having an inner first member of circular cross section with a periphery containing first energy conversion means for converting gas pressure to power and an outer second member extending around the first member and with a generally circular inner surface facing the outer surface of the first member and having second energy conversion means in the inner surface facing the first member and for converting gas velocity to power. In certain embodiments the inner and outer arrangements of the first and second members will be reversed.