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RINGFEDER GMBH

Overview
  • Total Patents
    561
About

RINGFEDER GMBH has a total of 561 patent applications. Its first patent ever was published in 1924. It filed its patents most often in Germany, France and United Kingdom. Its main competitors in its focus markets transport, mechanical elements and machines are KARL SCHARFENBERG, BOLDYREV ALEKSEJ PETROVICH and EISENBAHNTECH HALBERSTADT GMBH.

Patent filings per year

Chart showing RINGFEDER GMBHs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Kreissig Ernst 41
#2 Jansen Harry 33
#3 Edelmeier Hans 32
#4 Peter Oskar E 27
#5 Toenne Franz 26
#6 Rommerskirchen Kurt 23
#7 Vandeweerd Rolf 20
#8 Schaefer Horst-Dieter 19
#9 Marsella Gino 17
#10 Peters Wilhelm 15

Latest patents

Publication Filing date Title
DE19741578A1 Trailer coupling
DE19710583A1 Trailer coupling with resting body
DE19707434A1 Element for absorbing kinetic energy
EP0689982A1 Railway vehicle with a draw gear
DE4337257C1 Sleeve buffers for rail vehicles
DE4320844A1 Hydraulically tensionable device for connecting a cylindrical hub body to a shaft
EP0563681A1 Draw gear for railway vehicles
DE4222268A1 Device for resilient absorption of impact forces, especially for railway buffers
DE4021004A1 TRAILER COUPLING FOR VEHICLES
EP0349979A1 Arrangement for damping vibrations of structures or parts thereof
DE3921111A1 TOW FOR TRAILER VEHICLES
DE3823207A1 DEVICE FOR DAMPING VIBRATIONS OF ELASTIC SYSTEMS
EP0280057A1 Clamping arrangement design for tensioning and securing a screwed connection
DE3723709A1 DEVICE FOR REMOTE CONTROLLING OF AN AUTOMATIC TOW COUPLING
DE3713620C1 Device for resiliently absorbing impact forces, in particular buffer for rail vehicles
DE3643703A1 Intermediate coupling for connecting vehicles, in particular road vehicles
DE3630630A1 TRAIN AND PUSHING DEVICE, IN PARTICULAR FOR MEDIUM BUFFER CLUTCHES OF RAIL VEHICLES
DE3623773A1 Attachment of a trailer coupling to a vehicle
DE3616166A1 Rail vehicle with a traction device
DE3610567A1 Plunger buffer for resiliently absorbing impacts, in particular for rail vehicles