Inventor

Peter A. Kershaw

Inventor

London, CA

Overview

26→

Patents

1980–2006

Patent span

Mechanical engineering

Primary field (CPC F)

Patents· 26 as inventor

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

H02Kprimary

H02KDynamo-electric machines31%

F04DNon-positive-displacement pumps13%

F01PCooling of machines or engines in general9%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests7%

Y10TTechnical subjects covered by former us classification7%

B60KArrangement or mounting of propulsion units or of transmissions in vehicles5%

F28DHeat-exchange apparatus, not provided for in another subclass, in which the heat-exchange media do not come into direct contact5%

F05BIndexing scheme relating to wind, spring, weight, inertia or like motors, to machines or engines for liquids covered by subclasses f03b, f03d and f03g4%

F16CShafts4%

H01RElectrically-conductive connections4%

PatentTitleYear

7,112,907'Flux modifier for a permanent magnet brush-type motor using wound field coils combined with permanent magnets'2006 6,995,490'Flux modifier for a permanent magnet brush-type motor using wound field coils combined with permanent magnets'2006 6,694,599'Method of connecting commutator bars in a cross-linked commutator having additional parallel paths'2004 6,624,546'Radio-frequency interference suppressing choke with elongated portions for brush-type motors'2003 6,617,744'DC motor brush card assembly having attaching structures and multiple choke coils with elongated portions'2003 6,448,676'Pulse width modulated engine cooling fan motor with integrated MOSFET'2002 6,208,052'Cooling module for an electronically controlled engine'2001 6,174,143'Pump motor having submersible stator and rotor and insulated winding set terminals'2001 6,142,213'Ducted cooling system with radial-flow fan'2000 6,111,334'Divisible lamination brushless pump-motor having fluid cooling system'2000 5,997,261'Pump motor having fluid cooling system'1999 5,989,151'Hybrid engine cooling system having electric motor with electro-magnetic clutch'1999 5,977,666'Electric motor having brush noise absorption system'1999 5,970,925'Total cooling assembly for I. C. engine-powered vehicles'1999 5,949,171'Divisible lamination brushless pump-motor having fluid cooling system'1999 5,944,497'Fan assembly having an air directing member to cool a motor'1999 5,945,756'Ultra quiet electric motor for automotive applications'1999 5,925,999'Three-speed dual-winding direct current permanent magnet motor method and apparatus'1999 5,917,258'Bearing assembly for an ultra quiet electric motor'1999 5,845,612'Total cooling assembley for I. C. engine-powered vehicles'1998 5,818,133'Brushless motor with tubular bearing support'1998 5,660,149'Total cooling assembly for I.C. engine-powered vehicles'1997 5,299,811'Seal member mounted in housing pocket by resilient retaining member'1994 4,910,790'Two-speed motor'1990 4,884,844'Double stage taumel gear reduction unit'1989 4,224,047'Method of fusing a sight glass to a metal part'1980

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1980–2006Based in London, CA· patent location history

1989Patents assigned to MAGNA INT INC (1)· patent assignee history

1997–1998Patents assigned to SIEMENS ELECTRIC LTD (2)· patent assignee history

1998–2001Patents assigned to SIEMENS CANADA LTD (14)· patent assignee history

2002–2003Patents assigned to SIEMENS AUTOMOTIVE INC (2)· patent assignee history

2003–2006Patents assigned to SIEMENS VDO AUTOMOTIVE INC (4)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
SIEMENS CANADA LTD	14	1998–2001
SIEMENS VDO AUTOMOTIVE INC	4	2003–2006
SIEMENS AUTOMOTIVE INC	2	2002–2003
SIEMENS ELECTRIC LTD	2	1997–1998
MAGNA INT INC	1	1989

Locations

Location	Patents	Span
London, CA	26	1980–2006