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HARTFORD SPECIAL MACHINERY CO

Overview
  • Total Patents
    107
About

HARTFORD SPECIAL MACHINERY CO has a total of 107 patent applications. Its first patent ever was published in 1917. It filed its patents most often in United States, United Kingdom and Germany. Its main competitors in its focus markets machine tools, machines and mechanical elements are DYNA SYSTEMS INC, HELIPEBS LTD and KUBOTA IRON WORKS CO LTD.

Patent filings in countries

World map showing HARTFORD SPECIAL MACHINERY COs patent filings in countries

Patent filings per year

Chart showing HARTFORD SPECIAL MACHINERY COs patent filings per year from 1900 to 2020

Focus industries

Top inventors

# Name Total Patents
#1 Morton Robert D 12
#2 Grohoski Edward G 9
#3 Grohoski Edward Gregory 8
#4 Morton Robert Dean 8
#5 Morton R 7
#6 Johnson Clarence 5
#7 Pettigrew David D 5
#8 Grohoski E 5
#9 Dean Morton Robert 4
#10 Gregory Grohoski Edward 3

Latest patents

Publication Filing date Title
JPS55153641A Attachment for thread reerolling for thread rolling machine
DE2903276A1 Two=stroke press for bolt cold heading - has single swivelling die with central channel for bolt blank
US4118965A Die mounting assembly for a planetary work forming machine
US4088045A Planetary work forming machine having improved starter timing control and starter drive selector
US4040542A Clearing wheel assembly for thread rolling machine and the like
US3974904A Adjustable track cover positioning assembly
US3952884A Apparatus for feeding headed work blanks
US3879976A Starter slide and blade assembly for thread roller
US3842633A Resiliently biased starter blade supporting arm for thread roller
US3839891A Roll forming machine drive mechanism
AU4329672A Pointer for multiple size work blanks
US3786527A Pointer for multiple size work blanks
US3758900A Combination point former and thread roller machine
US3472400A Variable air jet delivery system
US3371820A Starter mechanism for thread rolling machine
GB1070160A Thread rolling machines
US3314261A Starter mechanism for thread rolling machine
US3191423A Feed device for thread rolling machines and the like
US3324697A Thread roller feeding mechanism
GB1006071A Feed device for thread rolling machine