David J Durfee

US Patent:

20120296479, Nov 22, 2012

Filed:

May 16, 2011

Appl. No.:

13/108500

Inventors:

Jessica Millar - Barrington RI, US
David A. Durfee - North Scituate RI, US

International Classification:

G06F 1/32
G06F 1/26
G05D 23/19

US Classification:

700277, 700278, 700295

Abstract:

A method and apparatus of controlling the electric power usage of electric thermal storage heaters and systems are based on: 1) current and recorded measurements local to the heater and building; 2) current measurements external to the heater and building; 3) forecasts communicated to the apparatus. The method also includes sending out communications about power use as well as various other local measurements. The apparatus has local controls on the electric thermal storage, including but not limited to the relays that control flow of power into the heating elements, a logic module that integrates the local controls, as well as communication channels that extend outside the building to entities capable of providing automatic forecasts and potentially other types of information not available locally.

US Patent:

20190183190, Jun 20, 2019

Filed:

Dec 7, 2018

Appl. No.:

16/213124

Inventors:

- Charleston RI, US
Karl Langmuir - Providence RI, US
David A. Durfee - N. Scituate RI, US

Assignee:

Revolution Cycle Works Company - Charleston RI

International Classification:

A41D 13/01
A41B 9/06
A41D 13/00
A45F 3/04

Abstract:

A portable article includes a portable body and a number of patterns disposed on the portable body. The patterns are selected from the group consisting of public patterns, detectable patterns, visible pattern, embedded patterns, camouflage patterns, invisible patterns, orienting patterns, collective patterns, external patterns, internal patterns, illuminated patterns, applied patterns and three dimensional patterns.