Ronald Raymond Lentz
Engineers at Everest Ln, Minneapolis, MN
License number
Colorado 12838
Issued Date
Sep 21, 1974
Renew Date
Jun 2, 1984
Expiration Date
Jun 2, 1984
Type
Professional Engineer
Address
Address
3230 Everest Ln, Minneapolis, MN 55447
Personal information
See more information about Ronald Raymond Lentz at radaris.comName
Address
Phone
20721 461St Ave, Morris, MN 56267
15550 Ranchview Ct, Wayzata, MN 55391
Professional information
Reflective Temperature Compensating Microwave Susceptors
US Patent:
5019681, May 28, 1991
Filed:
Feb 14, 1990
Appl. No.:
7/480071
Inventors:
Matthew W. Lorence - Lakeville MN
Michael J. Rice - St. Paul MN
Ronald R. Lentz - Plymouth MN
Peter S. Pesheck - Brooklyn Center MN
Michael R. Perry - Plymouth MN
Michael J. Rice - St. Paul MN
Ronald R. Lentz - Plymouth MN
Peter S. Pesheck - Brooklyn Center MN
Michael R. Perry - Plymouth MN
Assignee:
The Pillsbury Company - Minneapolis MN
International Classification:
H05B 680
US Classification:
219 1055F
Abstract:
A reflective temperature compensating microwave susceptor is disclosed. The susceptor has a microwave interactive heating layer which may be characterized in various ways. In one aspect, the microwave interactive heating layer is operable to provide an increase in reflectance by several factors during heating from 23. degree. C. to 250. degree. C. The microwave interactive heating layer may have a surface resistance that decreases significantly from 23. degree. C. to 250. degree. C. In another aspect, the microwave interactive heating layer may have an electrical conductivity which increases significantly from 23. degree. to 250. degree. C. The microwave interactive heating layer is preferably formed as a thin film deposited upon a substrate, preferably a sheet of polyester. The coated polyester is adhesively bonded to a support member. The microwave interactive heating layer preferably comprises TiO. sub.
Method And Apparatus For Measuring Strong Microwave Electric Field Strengths
US Patent:
4816634, Mar 28, 1989
Filed:
Oct 23, 1987
Appl. No.:
7/113128
Inventors:
Ronald R. Lentz - Plymouth MN
Dan J. Wendt - Lino Lakes MN
Jonathon D. Kemske - New Brighton MN
Peter S. Pesheck - Brooklyn Center MN
Dan J. Wendt - Lino Lakes MN
Jonathon D. Kemske - New Brighton MN
Peter S. Pesheck - Brooklyn Center MN
International Classification:
H05B 680
US Classification:
219 1055M
Abstract:
A method and apparatus for measuring strong microwave electric field strengths is disclosed. The apparatus includes a first active temperature probe in cooperation with susceptor means for measuring a temperature indicative of the heating effects of microwave radiation at a test location, and an ambient temperature probe for measuring ambient temperature. The temperature differential between the two probes is used by calibration means for determining electric field strength at the test location. The method includes the steps of heating a susceptor means with microwave radiation, and measuring a temperature indicative of the heating effects of microwave radiation at the test location. Ambient temperature is measured, and the temperature differential used to determine the magnitude of the electric field strength.
Artificial Dielectric Tuning Device For Microwave Ovens
US Patent:
5254820, Oct 19, 1993
Filed:
Nov 19, 1990
Appl. No.:
7/615033
Inventors:
Peter S. Pesheck - Minneapolis MN
Ronald R. Lentz - Plymouth MN
Ronald R. Lentz - Plymouth MN
Assignee:
The Pillsbury Company - Minneapolis MN
International Classification:
H05B 664
US Classification:
219 1055E
Abstract:
An apparatus is suitable for use in a microwave oven. An artificial dielectric is located adjacent or within a food product cooking stack in the microwave oven. A support media supports the artificial dielectric in the cooking stack at a desired distance from the oven shelf. The artificial dielectric has properties suitable so that the cooking stack can be positioned in the microwave oven to achieve desired cooking performance.
Thick Metal Microwave Susceptor
US Patent:
5182425, Jan 26, 1993
Filed:
Nov 6, 1990
Appl. No.:
7/609910
Inventors:
Peter S. Pesheck - Minneapolis MN
Ronald R. Lentz - Plymouth MN
Ronald R. Lentz - Plymouth MN
Assignee:
The Pillsbury Company - Minneapolis MN
International Classification:
H05B 680
US Classification:
219 1055E
Abstract:
A microwave susceptor structure includes a first thick metal layer, and a second matching layer coupled to the thick metal layer. The matching layer is chosen to couple a desired amount of power into the thick metal layer.