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SHEFFER COLLET CO

Overview
  • Total Patents
    16
About

SHEFFER COLLET CO has a total of 16 patent applications. Its first patent ever was published in 1977. It filed its patents most often in United States, Canada and EPO (European Patent Office). Its main competitors in its focus markets machine tools, machines and mechanical elements are FORKARDT GMBH, CONE FRANK L and ERICKSON TOOL CO.

Patent filings in countries

World map showing SHEFFER COLLET COs patent filings in countries
# Country Total Patents
#1 United States 12
#2 Canada 3
#3 EPO (European Patent Office) 1

Patent filings per year

Chart showing SHEFFER COLLET COs patent filings per year from 1900 to 2020

Focus industries

Top inventors

# Name Total Patents
#1 Howard Carl J 3
#2 Felker Merle 3
#3 Piotrowski Charles 3
#4 Waite Carlson A 3
#5 Wrobel Donald J 2
#6 Dittrich Thomas M 2
#7 Stone William S 2
#8 Stone William 1
#9 Beery Jay D 1
#10 Stone William Shelton 1

Latest patents

Publication Filing date Title
US5105523A Method and means assuring repeatable concentricity
US5143687A Rapid change wedge chuck with positive lock
US5052700A Compensating and/or centralizing grip chuck
EP0201298A2 Automatic aligning interchangeable work support
US4688810A Support for a chuck
US4647051A Support for a chuck
US4662043A Project plate system
US4591171A Seal for air charging a chuck
US4422653A Chuck for tubular workpieces
US4422655A Chuck with improved jaw actuator support structure
US4355816A Double acting internal diameter gripping chucks
CA1120247A Diaphragm chuck with locking ring
US4236722A Double acting cam operated chuck collet
CA1077252A Collet chuck
US4094521A Collet chuck