Assignee
DUERKOPPWERKE
DE65 patents
Top patents by PatentIndex Score
US4736687AApr 12, 1988
Workpiece transport system
DUERKOPPWERKE25 citations91
US4967675ANov 6, 1990
Method and sewing unit having means for folding a strip of material prior to sewing the same to a blank
DUERKOPPWERKE22 citations80
US4417535ANov 29, 1983
Sewing machine belt feeder with tensioner
DUERKOPPWERKE22 citations79
US4363105ADec 7, 1982
Microcomputer-controlled circuit tester
DUERKOPPWERKE20 citations78
US4116145ASep 26, 1978
Upper fabric feed device for sewing machines
DUERKOPPWERKE24 citations76
US4574719AMar 11, 1986
Optoelectronic scanner for sewing machine
DUERKOPPWERKE24 citations74
US4226197AOct 7, 1980
Sewing machine with edge guide
DUERKOPPWERKE20 citations74
US4381719AMay 3, 1983
Sewing machine with a stitch counter and correction unit
DUERKOPPWERKE10 citations73
US4723885AFeb 9, 1988
Device for the removal of bobbins from an automatic spinning machine
DUERKOPPWERKE16 citations72
US4589358AMay 20, 1986
Automatic pocket opening sewing machine having a cutting device for producing notching cuts
DUERKOPPWERKE18 citations72
US4212384AJul 15, 1980
Circulating conveyor
DUERKOPPWERKE15 citations72
US4598812AJul 8, 1986
Conveyer for suspended articles, e.g. garments
DUERKOPPWERKE15 citations71
US4550672ANov 5, 1985
Thread-holding apparatus for buttonhole machine
DUERKOPPWERKE13 citations71
US4534304AAug 13, 1985
Stitch correction method and apparatus for a sewing machine
DUERKOPPWERKE8 citations71
US4530294AJul 23, 1985
Tubular-goods holder for sewing machine
DUERKOPPWERKE12 citations71
US4363281ADec 14, 1982
Sewing-machine system for continuously monitoring workpiece thickness
DUERKOPPWERKE19 citations71
US4258637AMar 31, 1981
Movable workpiece-clamping attachment for sewing machine
DUERKOPPWERKE10 citations71
US4919061AApr 24, 1990
Button-hole sewing machine having a thread cutting and clamping device
DUERKOPPWERKE8 citations70
US4665843AMay 19, 1987
Sewing device for producing piped openings in sewing material
DUERKOPPWERKE11 citations70
US4586123AApr 29, 1986
Digital control system for the speed of a sewing machine
DUERKOPPWERKE7 citations70
US4062309ADec 13, 1977
Automatic feed device for sewing machine
DUERKOPPWERKE11 citations70
US4570555AFeb 18, 1986
Drive device for a two-threaded chain-stitch buttonhole sewing machine
DUERKOPPWERKE9 citations69
US4815404AMar 28, 1989
Servo device for a multineedle sewing machine with engageable and disengageable needle bars
DUERKOPPWERKE14 citations68
US4602579AJul 29, 1986
Apparatus for tensioning and controlled advancing of a tube-like sewing article
DUERKOPPWERKE15 citations68
US4404921ASep 20, 1983
Buttonhole machine with automatic thread clipping
DUERKOPPWERKE9 citations68
US4137858AFeb 6, 1979
Gripper and bobbin assembly for double-lock-stitch sewing machine
DUERKOPPWERKE8 citations68
US4074645AFeb 21, 1978
Controlled braking device for the gripper-thread bobbin of a double lock-stitch sewing machine
DUERKOPPWERKE8 citations68
US4646668AMar 3, 1987
Universal sewing foot
DUERKOPPWERKE10 citations67
US4607583AAug 26, 1986
Cutting device in a sewing machine for cutting at least one thread chain or a sewn-on tape
DUERKOPPWERKE10 citations67
US5092258AMar 3, 1992
Method and device for producing pocket openings
DUERKOPPWERKE7 citations65
US4981094AJan 1, 1991
Sewing machine having a device actuable by a pressure medium for applying a variable force to a presser element
DUERKOPPWERKE14 citations65
US4883005ANov 28, 1989
Sewing machine with a tensioning device having a plurality of tensioning rollers
DUERKOPPWERKE17 citations65
US4714034ADec 22, 1987
Button feeding device for button attaching machines
DUERKOPPWERKE10 citations65
US4364319ADec 21, 1982
Controlled thread clamp device for needle threads
DUERKOPPWERKE18 citations65
US3935826AFeb 3, 1976
Method of and apparatus for feeding a workpiece along a surface of a sewing machine
DUERKOPPWERKE13 citations64
US4658740AApr 21, 1987
Sewn part transfer device for a sewing machine
DUERKOPPWERKE6 citations62
US4271768AJun 9, 1981
Assembly for forming piped-edge openings in a fabric workpiece
DUERKOPPWERKE6 citations62
US4726462AFeb 23, 1988
Coding device for conveying systems
DUERKOPPWERKE6 citations61
US4722657AFeb 2, 1988
Process and apparatus for transporting and storing bobbins, especially for removing them from automatic spinning machines or the like
DUERKOPPWERKE7 citations61
US4395954AAug 2, 1983
Coupling device for materials-handling conveyor
DUERKOPPWERKE4 citations61
US4352328AOct 5, 1982
Coupling assembly for overhead rail materials-transport system
DUERKOPPWERKE3 citations61
US4206850AJun 10, 1980
Coupling device for monorail vehicles
DUERKOPPWERKE4 citations61
US4311106AJan 19, 1982
Sewing machine with upper and lower workpiece transporters
DUERKOPPWERKE15 citations60
US4102280AJul 25, 1978
Feed device for flexible workpieces, especially for a sewing machine
DUERKOPPWERKE6 citations60
US4446803AMay 8, 1984
Upper fabric feed for a sewing machine
DUERKOPPWERKE5 citations59
US4276837AJul 7, 1981
Welt feeder for sewing machines
DUERKOPPWERKE2 citations59
US4131074ADec 26, 1978
Method of and apparatus for the sewing of a multiplicity of stitch groups in a workpiece
DUERKOPPWERKE4 citations59
US4104977AAug 8, 1978
Fabric-feed control for sewing machine
DUERKOPPWERKE6 citations59
US4781131ANov 1, 1988
Sewing machine having a sewing-material cutting device
DUERKOPPWERKE5 citations57
US4644882AFeb 24, 1987
Workpiece guide rail including sewing material stretching device
DUERKOPPWERKE2 citations57
Showing the top 50 of 65 patents by PatentIndex Score.