Inventor

Richard T. Walter

Inventor

Baldwin, MD, US

Overview

62→

Patents

1976–2017

Patent span

Electricity

Primary field (CPC H)

Patents· 62 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H02Kprimary

H02KDynamo-electric machines17%

H01RElectrically-conductive connections14%

H01MProcesses or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy12%

Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution11%

Y10TTechnical subjects covered by former us classification11%

H02JElectric power networks8%

B25FCombination or multi-purpose tools not otherwise provided for5%

B27BSaws for wood or similar material4%

H02PControl or regulation of electric motors, electric generators or dynamo-electric converters4%

Y02PClimate change mitigation technologies in the production or processing of goods4%

PatentTitleYear

9,837,878Electromagnetic interference (EMI) suppression in a power tool2017 9,472,989'Method of manufacturing a power tool with molded armature'2016 8,997,332'Method of forming a power tool'2015 8,937,412'Method of forming a power tool'2015 8,901,787'Method of forming a power tool'2014 8,850,690'Method of forming a power tool'2014 8,324,764'Method for forming a power tool'2012 8,203,239'Method of forming a power tool'2012 7,990,005'Power transmission tool and system'2011 7,814,641'Method of forming a power tool'2010 7,685,697'Method of manufacturing an electric motor of a power tool and of manufacturing the power tool'2010 7,598,705'Cordless power tool system having cordless power tool and battery pack that employ cooperating rails and grooves for connection of battery pack to cordless power tool'2009 7,550,213'Tool system having rechargeable battery pack'2009 7,464,455'Method for forming an armature for an electric motor'2008 7,423,407'Cordless power tool system having slidably-engaging power source connection'2008 7,274,126'Motor armature having distributed windings for reducing arcing'2007 7,273,676'Battery pack for cordless device'2007 7,215,048'Dynamoelectric machine having encapsulated coil structure with one or more of phase change additives, insert molded features and insulated pinion'2007 7,180,200'Starter system for portable internal combustion engine electric generators using a portable universal battery pack'2007 7,170,261'Generator with dual cycloconverter for 120/240 VAC operation'2007 7,102,331'Generator with dual cycloconverter for 120/240 VAC operation'2006 7,096,566'Method for making an encapsulated coil structure'2006 7,058,291'Brushless DC motor'2006 7,038,343'Field assembly for a motor and method of making same'2006 7,005,831'Cordless power tool system utilizing battery pack connection system with guide rails and guide slots'2006 6,975,050'Brushless DC motor'2005 6,946,758'Dynamoelectric machine having encapsulated coil structure with one or more of phase change additives, insert molded features and insulated pinion'2005 6,867,561'Electrical machine'2005 6,787,958'Electrical machines'2004 6,720,689'Brushless motor having capacitors mounted on sidewall of motor housing'2004 6,665,158'Alternator/inverter with dual H-bridge and automatic voltage regulation'2003 6,661,140'Brushless motor having housing enabling alignment of stator and sensor'2003 6,653,815'Cordless power tool system'2003 6,646,406'Electrical machines'2003 6,608,401'Alternator/inverter with dual H-bridge'2003 6,602,634'Battery pack for cordless device'2003 6,600,136'Oil heater for engine of portable electric generator'2003 6,570,284'Brushless motor having double insulation'2003 6,538,403'Brushless DC motor sensor control system and method'2003 6,515,451'Cordless power tool system'2003 6,304,058'Cordless power tool system'2001 RE037226'Battery pack for cordless device'2001 5,919,585'Battery pack for cordless device'1999 5,789,101'Battery pack for cordless device'1998 5,620,808'Battery pack for cordless device'1997 5,489,484'Battery pack for cordless device'1996 5,268,630'Method and apparatus for varying the sample rate of a fast battery charger'1993 5,217,395'Low-voltage, high current capacity connector assembly and mobile power tool and appliance operating system'1993 5,095,259'Low voltage, high current capacity connector assembly and mobile power tool and appliance operating system'1992 5,001,924'Volumetric measurement of tank volume'1991 4,905,300'Motor control and power systems and methods of operation thereof'1990 4,853,607'Non-isolated thermally responsive battery charger'1989 4,835,410'Dual-mode corded/cordless system for power-operated devices'1989 4,835,409'Corded/cordless dual-mode power-operated device'1989 4,793,054'Alignment system for permanent magnet motors'1988 4,682,066'Alignment system for permanent magnet motors'1987 4,453,628'Bacon package inner pad'1984 4,392,101'Method of charging batteries and apparatus therefor'1983 4,388,582'Apparatus and method for charging batteries'1983 4,102,484'Leakage resistance carton'1978 3,968,923'Hollow wall carton corner arrangement'1976 3,935,525'Battery charging circuit with thermostat control'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1984Patents assigned to CONTAINER CORP (3)· patent assignee history

1976–2007Based in Baltimore, MD, US· patent location history

1976–1984Based in Norristown, PA, US· patent location history

1983–2017Patents assigned to BLACK & DECKER INC (54)· patent assignee history

1987–2017Based in Baldwin, MD, US· patent location history

1991Based in Seabrook, TX, US· patent location history

2003–2005Patents assigned to UNIV WARWICK (3)· patent assignee history

2003–2005Based in Towson, MD, US· patent location history

2012Patents assigned to DU HUNG T (2)· patent assignee history

2012Patents assigned to WALTER RICHARD T (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
BLACK & DECKER INC	54	1983–2017
CONTAINER CORP	3	1976–1984
UNIV WARWICK	3	2003–2005
DU HUNG T	2	2012
WALTER RICHARD Tself	2	2012

Locations

Location	Patents	Span
Baldwin, Maryland, US	49	1987–2017
Baltimore, Maryland, US	6	1976–2007
Towson, Maryland, US	3	2003–2005
Norristown, Pennsylvania, US	3	1976–1984
Seabrook, Texas, US	1	1991