摘要:
A pump includes a pumping chamber having an inlet, an assembly of a rotating hub and blades disposed in the pumping chamber, a connection to a fluid source and a connection to an air source. According to one embodiment, at least one conduit relieves pressure on the assembly by conducting fluid. According to another embodiment, the blades each have a radially outer edge with a shape minimizing friction between the radially outer edge and an inner surface of the pumping chamber. Methods for providing fluid are also provided.
摘要:
Devices and methods of use of such devices for pumping fluid and for use in surgical procedures preferably include vacuum-driven pumps for providing irrigation and suction functions to the surgical field. Such pumps may be freestanding, external to or integrated into handpieces of the surgical instruments.
摘要:
Disclosed is a domestic cooking range of the ventilated type having surface elements and an underlying oven characterized by an extension of the ventilating fan motor shaft carrying an auxiliary fan disposed within the oven which provides forced circulation of air in the oven. The oven may thus be selectively operated in the conventional radiant heating mode or in the forced circulation or "convected" mode depending upon whether the ventilating fan motor is in operation. The oven can be held at an elevated temperature (of the order of 550.degree. F) for a time interval to accelerate catalytic self-cleaning (catalyst added to the porcelain frit covering the oven surface) because of air circulation within the oven door and passages adjacent the door, this cooling air flow being induced by operation of the ventilating fan.
摘要:
Apparatus is provided for use in the sterilization of contact lenses or the like, wherein lenses are disposed within a sterilizing solution contained within a reaction vessel, which sterilizing solution is capable of being decomposed through contact with a catalytic agent. The apparatus comprises a reaction vessel capable of containing a sterilizing solution and comprising a container portion, a cover and structure for supporting an article in contact with sterilizing solution in the container. Further structure is provided for mounting a catalytic agent on the supporting structure such that the catalytic agent is removable for replacement by a user as the catalytic agent becomes exhausted in use. The mounting of the catalytic agent on the article supporting structure prevents contact of the catalytic agent with the solution in the container until the article supporting structure with the contact lenses therein is placed in the solution in the container for beginning the sterilizing process, to thereby prevent premature breakdown of the sterilizing solution prior to the introduction of contact lenses for sterilization therein.
摘要:
A downdraft countertop cooking range having an improved ventilation system for removing smoke and cooking odors from the entire cooking panel area. The range has a modular cooking panel recessed substantially below the countertop for enhanced accessibility from the front of the range. Exhaust louvers spaced between the ends of the cooking panel and the top edge of the range frame, and of substantially equal depth to that of the cooking panel, assure an adequate flow of exhaust air over the cooking panel area.