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:
Jun. 06, 1995
Filed:
Mar. 17, 1994
Davorin Kapich, Carlsbad, CA (US);
Other;
Abstract
A hydraulic system for driving a small, compact, relatively low cost, long life and very high speed hydraulic turbine drive. The system maximizes energy conversion efficiency between a combustion engine hydraulic pump and a high speed hydraulic turbine driven supercharger. A venturi system provides a pressure drop permitting lubrication flow for the supercharger bearings and also a substantial hydraulic pump inlet pressure to prevent foaming and cavitation at the pump inlet. A bypass valve permits control of the turbine speed based on engine need rather than engine speed as is the case with prior systems. Embodiments applicable to one stage supercharger and supercharger-turbocharger combinations are described. In a preferred embodiment of the present invention the hydraulic system is used to drive a high speed turbine at a power level in the range of 5 to 20 horsepower with operating speeds of 50,000 to 200,000 RPM. In this particular embodiment the turbine blades are produced at low cost as a part of a thermoplastic turbine wheel and the strength needed for very high centrifugal forces is provided by compressing substantially all of the plastic turbine wheel, except for the blades, within a metal sleeve.