Abstract: A walk-behind blower (10) having a plurality of impeller blades (34) mounted around a periphery of a rotating support structure (30,32) rather than on a rotating central shaft, and having an independent, wrap-around protective frame cage (18) which provides both a stronger mounting point for a front wheel (22) and skid protection for a housing (14). Each blade (34) presents a straight portion (48) beginning at an outer edge of a disk-shaped rear support structure (30) and extending inwardly, and a curved portion (50) beginning at an inward end of the straight portion.

Abstract: A food counter useful in displaying ready-to-eat foods is constructed to have a chilled top for providing an aesthetic frost layer and for maintaining the food products at a desired temperature. Removable barriers and fixtures are used during pouring procedure using liquid mastic and removed once the mastic has cured, thus eliminating the need for costly metal forming of the counter. Fabricating one food counter includes providing a planar member having an opening therein sized for receiving a food receptacle, securing a fixture to the member for a masking the opening, placing a refrigeration line proximate a lower surface of the top member sufficient for frosting the upper surface thereof during refrigerant fluid flow through the line, applying a thermally resistant material onto the lower surface for covering the refrigerating line, and removing the fixture prior to assembling the member with a pan assembly.

Abstract: A counter construction for merchandising prepared foods comprises a support fitted with and extending above the counter and an elongated sneeze guard assembly carried by the support means above the counter top. The sneeze guard is extensible into and out of the counter to permit the assembly to be raised and lowered relative to the counter top, permitting both full service and self-service modes of operation. The sneeze guard assembly further includes other features, including an illuminating light, a shelf and an advertising/accent panel, all of which are carried by the sneeze guard assembly.

Abstract: This invention relates to the prevention and treatment of thrombi using pminogen activators, including t-PA, urokinases, and streptokinases, in conjunction with intermittent (pulsed mode) ultrasound. A preferred modality interposes liquid-containing interface between the skin of the patient and the transducer of the ultrasound generator.