Peter L Stewart

US Patent:

61053767, Aug 22, 2000

Filed:

Apr 9, 1999

Appl. No.:

9/296712

Inventors:

Peter B. Stewart - Dallas TX
Brian Abramson - Brampton, Ontario, CA

International Classification:

F28D 300

US Classification:

62171

Abstract:

A mechanical control apparatus is provided for controlling the spray or misting of water into the immediate vicinity of the condenser coils in the compressor unit of an air conditioner, and comprises a hinged, vaned paddle member; and a water valve mechanically connected to and operable by the paddle member. The paddle member is mounted so that blown air flow from an air fan in the compressor unit will impinge on the paddle member, will and cause it to pivot upwardly about a hinge. The paddle member has a mechanical valve operating member, and is connected to a source of pressurized water, so that when the valve is open, water will pass through it to at least one nozzle mounted on the compressor unit to be sprayed or misted into the immediate vicinity of the condenser coils. The mechanical linkage between the paddle member and the valve is such that when the paddle member is pivoted upwardly, the valve will be opened; and when the paddle member is in its horizontal orientation, the valve will be closed. The hinged paddle member has a first half region which is distal with respect to the hinge, and a second half region which is proximal the hinge; and there are a plurality of vane elements which are spaced away from each other.

US Patent:

57994277, Sep 1, 1998

Filed:

Feb 15, 1996

Appl. No.:

8/599561

Inventors:

Patrick B. Abramson - Brampton, CA
Peter B. Stewart - Dallas TX

Assignee:

Vidpro International, Inc. - Dallas TX

International Classification:

G09F 318

US Classification:

4064202

Abstract:

The invention relates to improvements to a merchandise information system having a plurality of overlapping display items each having on opposite sides thereof information concerning available merchandise at a remote location. The system includes a support having a rigid base, and a plurality of spaced flexible webs formed integral with the lower edge of the base and depending therefrom. The display items are attached to the lower ends of the webs to display one side of the item. The lower end of each web includes a "claw" structure to prevent theft of the display item through downward extraction of the item from the web. The rigid base connects to a hanger support ledge on a plurality of steps on a display base. Mounting of a number of supports on the steps causes the display items to be arranged in an overlapping manner.

US Patent:

54087759, Apr 25, 1995

Filed:

Jul 23, 1993

Appl. No.:

8/097310

Inventors:

Patrick B. Abramson - Brampton, CA
Peter B. Stewart - Dallas TX

Assignee:

VIDPRO International, Inc. - Dallas TX

International Classification:

G09F 318

US Classification:

40642

Abstract:

A merchandise information system having a plurality of display items each having on opposite sides thereof information concerning available merchandise at a remote location. The system includes a support having a rigid base, and a plurality of spaced flexible webs formed integral with the lower edge of the base and depending therefrom. The display items are attached to the lower ends of the webs to display one side of the item. The lower end of each web includes a "claw" structure to prevent theft of the display item through downward extraction of the item from the web. A locking bar underlies the support for preventing the display items from being removed laterally from the web.

US Patent:

20200021560, Jan 16, 2020

Filed:

Jul 12, 2019

Appl. No.:

16/510293

Inventors:

- Waltham MA, US
Peter L. Stewart - Rowlett TX, US
Gregory A. Ladd - Frisco TX, US

International Classification:

H04L 29/06
G06F 9/54

Abstract:

An industrial control system (ICS) communicates via ICS protocols. A model is deployed in an information technology (IT) and operation technology (OT) network. Security policies are dynamically updated as the particular IT and OT network are used, patched, and modified. A deep packet inspection is used to enforce ICS constraints and ICS behaviors defined by the initial model. A state of the deep packet inspection is reported for situational awareness and debugging purposes. An alert is transmitted when anomalies are detected when ICS protocol traffic traverses ICS firewall network paths that execute ICS policies.