The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 22, 1994
Filed:
Jan. 19, 1993
William H Meise, Penns Park, PA (US);
Other;
Abstract
A fluid compressor or pump includes a driver such as a reciprocating piston or a voice-coil actuated diaphragm, which creates pressure waves in the fluid. The waves propagate through a tapered tube, in which the pressure increases as the waves move toward the small end. A valve at the small end of the tapered tube allows higher-pressure portions of the pulses of fluid to emerge. The pulses of pressurized fluid may be applied directly to a utilization apparatus, or they may be accumulated in a tank. The tapered tube may be more than one-tenth wavelength long, and preferably one-quarter wavelength long, to take advantage of the effects of reflections. A refrigeration unit including such a compressor dispenses with an accumulator, and provides heat-dissipating fins on the outer surface of the tapered tube.