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Dave Korpi Patents

Dave Korpi Patents

Below are some of the patents awarded to Dave Korpi

Mechanical Resonators Using Liquid Metals.. AKA Bulk Solidified Amorphous Alloy  A very important patent for improvements in Inertial Microbalances, Coriolis Mass Flow Meters, Vortex Meters, and other resonant structures. 

A novel use of bulk-solidifying amorphous metal alloys, frequently called “liquid metals”, are disclosed as a preferred material of construction for the manufacture of mechanical resonators, such as mechanical resonators utilized in the following: systems using tuning forks and variants of tuning forks, inertial microbalances, vibrating level detectors, vibrating viscosity and rheology measuring instruments, vibrating tube meters, such as Coriolis mass flow meters, vibrating structure gyroscopes, vortex flow meters, sonotrodes for various applications such as welding and medical applications, and piezoelectric activated mechanical resonators. A method of attaining high mechanical Q factors, sensitivity, elasticity, hardness, and high specific strength properties offered by the use of bulk-solidifying amorphous metal alloys in the manufacture of mechanical resonators is disclosed.

Mechanical resonators fabricated out of bulk-solidifying amorphous metal alloys

Dave Korpi Patent Novel Coriolis Flow Meter Sensor Tube method

 

US US20080118759A1 David M. Korpi Korpi David M

Priority 2006-11-21 • Filed 2006-11-21 • Published 2008-05-22

The use of bulk-solidifying amorphous metal alloys, frequently called “liquid metals”, are disclosed as a preferred material of construction for the manufacture of mechanical resonators, such as mechanical resonators utilized in the following: systems using tuning forks and variants of tuning …

Longitudinal resonating mode inertial mass sensing systems

Dave Korpi Patent Compensated Resonant Structure

US US8925385B2 David M. Korpi Sierra Instruments, Inc.

Priority 2010-12-06 • Filed 2011-12-06 • Granted 2015-01-06 • Published 2015-01-06

The subject invention provides improved means to measure mass collected on a sample collection surface in real time. A resonant structure is used as the “scale” to determine the mass in real time. The invention employs a membrane, or collection substrate, on the end of a resonant structure …

Wide-range, adjustable flowmeter

Dave Korpi Patent Sierra Model 820 Flow Meter

US US4800754A David M. Korpi Sierra Instruments, Inc.

Priority 1987-10-07 • Filed 1987-10-07 • Granted 1989-01-31 • Published 1989-01-31

A fluid bypass type flowmeter has a main passage which is configurable to various effective diameters by selectably adding pre-defined additional cross-sections comprised of an adjustable laminar flow element located within a bore for fine adjustm=ent of the full-scale range of the flowmeter, and …

Mass flowmeter

Dave Korpi Patent Improved Thermal Mass Flow Meter

US US4487062A John G. Olin Sierra Instruments, Inc.

Priority 1983-03-30 • Filed 1983-03-30 • Granted 1984-12-11 • Published 1984-12-11

An improved mass flowmeter of the type having a primary passage for the fluid whose flow rate is to be measured, a sensor tube which serves as a secondary passage for the fluid and is connected to the primary passage at upstream and downstream locations, and a pair of resistance wire coils …

Method and apparatus for improved flow rate measurement and calibration

Dave Korpi Patent Primary Gas Calibration Flow Standard

US US5684246A David M. Korpi Sierra Instruments, Inc.

Priority 1992-04-30 • Filed 1996-02-08 • Granted 1997-11-04 • Published 1997-11-04

A method and apparatus for precise measurement and calibration of gas flow rates is described. The apparatus and method employ precision-bored cylinders adapted for operation with ultrasonic transducers under the control of computer subroutines for accomplishing the desired methods.

Thermal mass flow sensor

Dave Korpi Patent Improved Thermal Mass Flow Sensor Design Dry-Trac

US US5880365A John G. Olin Sierra Instruments, Inc.

Priority 1993-10-29 • Filed 1997-01-17 • Granted 1999-03-09 • Published 1999-03-09

A thermal mass flow rate sensor is made of a resistance temperature detector wire wound around a mandrel. A metal sheath is formed about the mandrel and wire assembly to be in intimate contact with the mandrel and wire assembly. The materials of which the sensor is made are selected such that …

Vehicle service request system having enhanced safety features

Dave Korpi Patent Improved Security Ride Hailing System and Method for Lyft and Uber

US US20160275638A1 David M. Korpi David M. Korpi

Priority 2015-03-20 • Filed 2016-03-19 • Published 2016-09-22

Methods, systems and computer readable media for computerized vehicle service request systems having enhanced safety features are described.