Assignee
DUERKOPPWERKE
65 granted patents·615 citations·filing 1974–1989
Top patents by PatentIndex Score
65 records- 0190US4417535ASewing machine belt feeder with tensionerDUERKOPPWERKE·Filed 1981·Granted Nov 29, 1983·22 cites·4 claims
- 0289US4116145AUpper fabric feed device for sewing machinesDUERKOPPWERKE·Filed 1977·Granted Sep 26, 1978·24 cites·9 claims
- 0388US4363281ASewing-machine system for continuously monitoring workpiece thicknessDUERKOPPWERKE·Filed 1980·Granted Dec 14, 1982·19 cites·6 claims
- 0486US4589358AAutomatic pocket opening sewing machine having a cutting device for producing notching cutsDUERKOPPWERKE·Filed 1985·Granted May 20, 1986·18 cites·14 claims
- 0585US4574719AOptoelectronic scanner for sewing machineDUERKOPPWERKE·Filed 1984·Granted Mar 11, 1986·24 cites·9 claims
- 0684US4364319AControlled thread clamp device for needle threadsDUERKOPPWERKE·Filed 1979·Granted Dec 21, 1982·18 cites·13 claims
- 0783US4226197ASewing machine with edge guideDUERKOPPWERKE·Filed 1978·Granted Oct 7, 1980·20 cites·8 claims
- 0881US4550672AThread-holding apparatus for buttonhole machineDUERKOPPWERKE·Filed 1984·Granted Nov 5, 1985·13 cites·10 claims
- 0980US4883005ASewing machine with a tensioning device having a plurality of tensioning rollersDUERKOPPWERKE·Filed 1989·Granted Nov 28, 1989·17 cites·19 claims
- 1080US4602579AApparatus for tensioning and controlled advancing of a tube-like sewing articleDUERKOPPWERKE·Filed 1984·Granted Jul 29, 1986·15 cites·14 claims
- 1179US4530294ATubular-goods holder for sewing machineDUERKOPPWERKE·Filed 1984·Granted Jul 23, 1985·12 cites·12 claims
- 1278US4981094ASewing machine having a device actuable by a pressure medium for applying a variable force to a presser elementDUERKOPPWERKE·Filed 1989·Granted Jan 1, 1991·14 cites·21 claims
- 1378US4815404AServo device for a multineedle sewing machine with engageable and disengageable needle barsDUERKOPPWERKE·Filed 1988·Granted Mar 28, 1989·14 cites·6 claims
- 1476US4967675AMethod and sewing unit having means for folding a strip of material prior to sewing the same to a blankDUERKOPPWERKE·Filed 1989·Granted Nov 6, 1990·22 cites·12 claims
- 1574US4381719ASewing machine with a stitch counter and correction unitDUERKOPPWERKE·Filed 1981·Granted May 3, 1983·10 cites·5 claims
- 1673US4311106ASewing machine with upper and lower workpiece transportersDUERKOPPWERKE·Filed 1979·Granted Jan 19, 1982·15 cites·5 claims
- 1771US4665843ASewing device for producing piped openings in sewing materialDUERKOPPWERKE·Filed 1986·Granted May 19, 1987·11 cites·17 claims
- 1868US4736687AWorkpiece transport systemDUERKOPPWERKE·Filed 1986·Granted Apr 12, 1988·25 cites·23 claims
- 1967US4646668AUniversal sewing footDUERKOPPWERKE·Filed 1986·Granted Mar 3, 1987·10 cites·23 claims
- 2067US4570555ADrive device for a two-threaded chain-stitch buttonhole sewing machineDUERKOPPWERKE·Filed 1984·Granted Feb 18, 1986·9 cites·10 claims
- 2166US4534304AStitch correction method and apparatus for a sewing machineDUERKOPPWERKE·Filed 1983·Granted Aug 13, 1985·8 cites·11 claims
- 2266US4404921AButtonhole machine with automatic thread clippingDUERKOPPWERKE·Filed 1982·Granted Sep 20, 1983·9 cites·10 claims
- 2366US4137858AGripper and bobbin assembly for double-lock-stitch sewing machineDUERKOPPWERKE·Filed 1977·Granted Feb 6, 1979·8 cites·6 claims
- 2466US4074645AControlled braking device for the gripper-thread bobbin of a double lock-stitch sewing machineDUERKOPPWERKE·Filed 1976·Granted Feb 21, 1978·8 cites·9 claims
- 2564US4919061AButton-hole sewing machine having a thread cutting and clamping deviceDUERKOPPWERKE·Filed 1989·Granted Apr 24, 1990·8 cites·11 claims
- 2664US4714034AButton feeding device for button attaching machinesDUERKOPPWERKE·Filed 1986·Granted Dec 22, 1987·10 cites·13 claims
- 2763US4212384ACirculating conveyorDUERKOPPWERKE·Filed 1978·Granted Jul 15, 1980·15 cites·7 claims
- 2863US4062309AAutomatic feed device for sewing machineDUERKOPPWERKE·Filed 1975·Granted Dec 13, 1977·11 cites·8 claims
- 2962US4363105AMicrocomputer-controlled circuit testerDUERKOPPWERKE·Filed 1980·Granted Dec 7, 1982·20 cites·7 claims
- 3062US3935826AMethod of and apparatus for feeding a workpiece along a surface of a sewing machineDUERKOPPWERKE·Filed 1974·Granted Feb 3, 1976·13 cites·11 claims
- 3161US4598812AConveyer for suspended articles, e.g. garmentsDUERKOPPWERKE·Filed 1984·Granted Jul 8, 1986·15 cites·10 claims
- 3261US4258637AMovable workpiece-clamping attachment for sewing machineDUERKOPPWERKE·Filed 1979·Granted Mar 31, 1981·10 cites·11 claims
- 3360US4271768AAssembly for forming piped-edge openings in a fabric workpieceDUERKOPPWERKE·Filed 1980·Granted Jun 9, 1981·6 cites·4 claims
- 3457US4658740ASewn part transfer device for a sewing machineDUERKOPPWERKE·Filed 1985·Granted Apr 21, 1987·6 cites·15 claims
- 3555US5092258AMethod and device for producing pocket openingsDUERKOPPWERKE·Filed 1989·Granted Mar 3, 1992·7 cites·23 claims
- 3654US4723885ADevice for the removal of bobbins from an automatic spinning machineDUERKOPPWERKE·Filed 1985·Granted Feb 9, 1988·16 cites·9 claims
- 3754US4446803AUpper fabric feed for a sewing machineDUERKOPPWERKE·Filed 1982·Granted May 8, 1984·5 cites·7 claims
- 3851US4607583ACutting device in a sewing machine for cutting at least one thread chain or a sewn-on tapeDUERKOPPWERKE·Filed 1985·Granted Aug 26, 1986·10 cites·12 claims
- 3950US4104977AFabric-feed control for sewing machineDUERKOPPWERKE·Filed 1977·Granted Aug 8, 1978·6 cites·15 claims
- 4049US4102280AFeed device for flexible workpieces, especially for a sewing machineDUERKOPPWERKE·Filed 1977·Granted Jul 25, 1978·6 cites·3 claims
- 4147US4394840AWorkpiece guide for automatic sewing machineDUERKOPPWERKE·Filed 1981·Granted Jul 26, 1983·5 cites·10 claims
- 4247US4343251ASewing machineDUERKOPPWERKE·Filed 1979·Granted Aug 10, 1982·5 cites·3 claims
- 4344US4722657AProcess and apparatus for transporting and storing bobbins, especially for removing them from automatic spinning machines or the likeDUERKOPPWERKE·Filed 1986·Granted Feb 2, 1988·7 cites·8 claims
- 4444US4679513AThread-tensioning device for a bobbin housingDUERKOPPWERKE·Filed 1986·Granted Jul 14, 1987·5 cites·5 claims
- 4542US4131074AMethod of and apparatus for the sewing of a multiplicity of stitch groups in a workpieceDUERKOPPWERKE·Filed 1977·Granted Dec 26, 1978·4 cites·13 claims
- 4640US4781131ASewing machine having a sewing-material cutting deviceDUERKOPPWERKE·Filed 1987·Granted Nov 1, 1988·5 cites·11 claims
- 4740US4282820AWorkpiece-clamping assembly at sewing stationDUERKOPPWERKE·Filed 1980·Granted Aug 11, 1981·5 cites·11 claims
- 4838US4586123ADigital control system for the speed of a sewing machineDUERKOPPWERKE·Filed 1983·Granted Apr 29, 1986·7 cites·11 claims
- 4937US4227471ASewing-machine guide for edge-parallel seaming of a workpieceDUERKOPPWERKE·Filed 1978·Granted Oct 14, 1980·4 cites·10 claims
- 5036US4726462ACoding device for conveying systemsDUERKOPPWERKE·Filed 1986·Granted Feb 23, 1988·6 cites·9 claims
Showing the top 50 of 65 patent records by PatentIndex Score.
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