Thomas B Johnston

US Patent:

20190301758, Oct 3, 2019

Filed:

Apr 3, 2019

Appl. No.:

16/374575

Inventors:

THOMAS W. JOHNSTON - SCOTTSDALE AZ, US

International Classification:

F24F 11/30
F24F 3/052

Abstract:

This disclosure relates to a heating, ventilating, and/or air-conditioning (HVAC) system. More particularly, this disclosure describes a variable air volume (VAV) multi-zone system that removes cooperating mixing dampers on a typical multi-zone unit with two separate and independent hot and cold deck dampers for each zone. In an illustrative embodiment, the VAV multi-zone system may partition a hot deck and cool deck with damper section zones. Each damper section zone may correspond to a zone within a plurality of zones. A controller within the VAV system may modulate a hot and cold deck damper associated with each damper section zone based on a temperature set point of each zone. The temperature set point may be established through a thermostat located in each zone. A pressure may be maintained by adjusting airflow based on the modulated hot and cold deck dampers for the damper section zones.

US Patent:

20170136635, May 18, 2017

Filed:

Nov 13, 2016

Appl. No.:

15/350058

Inventors:

Thomas R. Johnston - Mint Hill NC, US

International Classification:

B26B 11/00
B26B 5/00
B25F 1/02
B23D 51/10

Abstract:

A multifunction hand tool is provided for mounting thereon a one-half inch universal tang reciprocating saw blade of the type having a rectangular tang portion extending from a blade and a registration tab extending from the rectangular tang portion. The multifunction tool has a handle body that includes: a first end portion extending in a first longitudinal direction; a second end portion extending in a second longitudinal direction opposite the first longitudinal direction; and a recess formed in the second end portion and shaped to receive and engage a rectangular tang portion and a registration tab of a one-half inch universal tang reciprocating saw blade.

US Patent:

20160273179, Sep 22, 2016

Filed:

Nov 4, 2015

Appl. No.:

14/932680

Inventors:

RICHARD MITZEN - SCOTTSDALE AZ, US
THOMAS JOHNSTON - SCOTTSDALE AZ, US

International Classification:

E02B 5/08

Abstract:

A floating cover has a plurality of upper tubular members. The plurality of upper tubular members is attached widthwise together to cover the waterway to reduce water in the waterway from evaporating. A plurality of lower tubular members is provided. Each of the plurality of lower tubular members is positioned between and attached lengthwise to corresponding bottom sections of adjacent upper tubular members, the lower tubular members having open ends to allow water to flow through the lower tubular members.

US Patent:

20140102056, Apr 17, 2014

Filed:

Oct 17, 2012

Appl. No.:

13/654089

Inventors:

Thomas W. Johnston - Scottsdale AZ, US

International Classification:

B01D 46/00

US Classification:

55419, 55478, 55481

Abstract:

An air conditioning system duct housing has a plurality of walls coupled together, having at least one outside air intake, at least one return air intake and an air supply outlet channel; a filter; and a receiving aperture (mixed air plenum) to receive the filter therein, wherein the receiving aperture (mixed air plenum) is interposed between the at least one outside air intake, the at least one return air intake and the air supply outlet channel.