Assignee
TUTCO INC
US40 patents
Top patents by PatentIndex Score
US7230214B2Jun 12, 2007
Metal sheathed heater using splice connection assembly with heat shrinkable tubing, and method of use
TUTCO INC27 citations92
US5925273AJul 20, 1999
Electric multi-stage heater assembly
TUTCO INC45 citations92
US5895597AApr 20, 1999
Electric heater support and mounting assembly
TUTCO INC27 citations92
US4675511AJun 23, 1987
Electric heater having an insulator with sloped guide surfaces and notches receiving a heater coil
TUTCO INC25 citations92
US4531017AJul 23, 1985
Insulator for an electric heater
TUTCO INC40 citations92
US6057529AMay 2, 2000
Combination temperature sensor, warning light sensor and light indicator for heating elements
TUTCO INC32 citations90
US4194261AMar 25, 1980
Heated wiper arrangement
TUTCO INC34 citations90
US6737616B1May 18, 2004
Open coil electric resistance heater using twisted resistance wires and methods of making
TUTCO INC21 citations88
US6294258B1Sep 25, 2001
Appliance windows coated with thermochromic polymer dispersed liquid crystal
TUTCO INC24 citations88
US6509554B2Jan 21, 2003
Support clips and insulators for use in electric heaters and electric heaters containing same
TUTCO INC37 citations86
US4292504ASep 29, 1981
Expanded metal electric heating element with edge support
TUTCO INC47 citations86
US6884974B2Apr 26, 2005
Mica board electrical resistance wire heater, subassemblies, components, and methods of assembly
TUTCO INC12 citations83
US7075043B2Jul 11, 2006
Standoff for use with uncoiled bare wire and insulated runs of an open coil electric resistance heater, method of use, and an open coil resistance heater using the standoff
TUTCO INC15 citations81
US4692599ASep 8, 1987
Coil support insulator for an electric heater
TUTCO INC22 citations81
US4458141AJul 3, 1984
Electric heater and coil support insulator therefor
TUTCO INC21 citations81
US6624398B2Sep 23, 2003
Insulator support structure for a heater assembly
TUTCO INC13 citations79
US7947932B2May 24, 2011
Open coil electric resistance heater with offset coil support and method of use
TUTCO INC8 citations74
US6844531B2Jan 18, 2005
Conduit ready electric belly-band heater and method of use
TUTCO INC8 citations73
US6825449B2Nov 30, 2004
Cooling controller with push-to-turn rotary switch
TUTCO INC12 citations73
US4730377AMar 15, 1988
Method for making a duct heater
TUTCO INC7 citations73
US4628190ADec 9, 1986
Duct heater
TUTCO INC8 citations73
US4559412ADec 17, 1985
Coil support insulator for an electric heater
TUTCO INC9 citations73
US6723968B2Apr 20, 2004
Conductive U-shaped jumper strap and method of use
TUTCO INC12 citations72
US6593554B2Jul 15, 2003
Method and apparatus for mounting a heater thermostat and temperature sensitive fuse
TUTCO INC11 citations72
US4617547AOct 14, 1986
Heater assembly
TUTCO INC14 citations72
US7154072B2Dec 26, 2006
Method of using open coil resistance heater in appliances with right and left hand installation capability
TUTCO INC9 citations71
US6794770B2Sep 21, 2004
Interface control switch
TUTCO INC12 citations71
US6770855B2Aug 3, 2004
Methods of assembling open coil electrical resistance heaters involving butt welding of rails and using welded insulator support clips with bendable tabs
TUTCO INC7 citations71
US6596974B2Jul 22, 2003
Support apparatus for resistive coils and insulators in electric heaters
TUTCO INC10 citations71
US9408257B2Aug 2, 2016
Silicone band cable heater assembly, method of making and method of use
TUTCO INC4 citations70
US9939171B2Apr 10, 2018
Universal electric duct heater and method of use
TUTCO INC3 citations66
US7442904B2Oct 28, 2008
Metal sheathed heater and thermostat assembly and method of use
TUTCO INC2 citations62
US7075042B2Jul 11, 2006
Solid state heater assembly, heater subassembly and methods of assembly
TUTCO INC3 citations62
US6600141B1Jul 29, 2003
Thermostat assembly for a heater
TUTCO INC4 citations58
US4848567AJul 18, 1989
Heating device having a removable carrier
TUTCO INC6 citations54
US5623126AApr 22, 1997
Ceramic terminal assembly
TUTCO INC1 citations52
US7928342B2Apr 19, 2011
Metal sheathed heater with solid state control device
TUTCO INC1 citations51
US6621056B2Sep 16, 2003
Heater assembly with a non-uniform cross section
TUTCO INC2 citations44
US10039156B2Jul 31, 2018
Conduit ready electric belly band heater using single housing and method of use
TUTCO INC0 citations39
US8367985B2Feb 5, 2013
Mica board electric resistance wire heater and method of use
TUTCO INC0 citations39