William Leo Spetz

US Patent:

7429719, Sep 30, 2008

Filed:

Aug 11, 2006

Appl. No.:

11/464013

Inventors:

William L Spetz - Cincinnati OH, US

Assignee:

Stellar Systems, Inc. - Cincinnati OH

International Classification:

H05B 1/02

US Classification:

219482, 219501, 219505, 323907

Abstract:

A self-regulating heater including a semiconductor for converting electrical energy to heat. A temperature sensitive element is used to bias the semiconductor as a function of temperature. The heating element has an advantage that its maximum temperature is limited by the biasing network, yet full power is available just below the limit.

US Patent:

39419770, Mar 2, 1976

Filed:

Jul 29, 1974

Appl. No.:

5/492480

Inventors:

Robert H. Voss - Goshen OH
Earl M. Ward - Hamilton OH
William L. Spetz - Cincinnati OH

Assignee:

The Mosler Safe Company - Hamilton OH

International Classification:

G06K 500
G06F 700

US Classification:

235 617B

Abstract:

A method and apparatus for automatically dispensing cash and performing other transactions relating to customer accounts. A magnetic card reader reads coded information into the system from a credit card which information identifies the account of the user. A keyboard entered code is compared with the card encoded information to verify that the account is that of an authorized user. The system includes a disc storage file which is checked for the account numbers of stolen cards and of accounts with respect to which transactions are to be restricted or otherwise modified. The file also includes a list of the images of cards read in the most recent past transactions and against these images the inserted card is checked for detection of duplicate cards. The system is capable of performing different types of transactions involving plural accounts of each user. A control code on each card enables the selection of only those machine functions which the user is authorized to select.