John P Keith

US Patent:

8407954, Apr 2, 2013

Filed:

Nov 28, 2007

Appl. No.:

11/946458

Inventors:

John Andrew Keith - Shepherdsville KY, US
Jonathan Paul Keith - Louisville KY, US
James Todd Essex - Louisville KY, US

Assignee:

Stala Integrated Assemblies, LLC - Louisville KY

International Classification:

E06B 1/04
E04C 2/38
E04C 3/00

US Classification:

52213, 52831, 522041, 52216, 526562, 52210

Abstract:

Devices and methods are disclosed for framing openings for doors, windows, store fronts, air conditioning units and other purposes, in walls formed of cast-in-place concrete. The devices include a jamb member having attached first and second inner flanges with angled guide surfaces for guiding placement of a wall forming system in alignment and engagement therewith and for anchoring the jamb member following hardening of the poured concrete. A method includes use of the disclosed jamb member to frame an opening in a building wall.

US Patent:

40474356, Sep 13, 1977

Filed:

May 20, 1976

Appl. No.:

5/690206

Inventors:

John L. Keith - Garland TX

Assignee:

Rockwell International Corporation - El Segundo CA

International Classification:

G01K 700

US Classification:

73362SC

Abstract:

Temperature sensing apparatus utilizing a single temperature sensing diode which is supplied with a constant level of current. The voltage across the diode having the constant current therethrough is compared with a constant voltage reference in a summing means and the deviation of the sensing diode with respect to the constant voltage reference is utilized as an indication of temperature.

US Patent:

40300234, Jun 14, 1977

Filed:

May 25, 1976

Appl. No.:

5/689877

Inventors:

John L. Keith - Garland TX

Assignee:

Rockwell International Corporation - El Segundo CA

International Classification:

G05F 158

US Classification:

323 4

Abstract:

A temperature compensated constant voltage circuit utilizing a constant current supply circuit having a positive temperature coefficient of current for supplying current to a nearly constant voltage dropping circuit. The voltage dropping circuit includes a zener diode which has a negative temperature coefficient. The combination of the positive and negative coefficients cooperate to produce a temperature stable constant voltage circuit.