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H W KEARNS AND COMPANY LTD

Overview
  • Total Patents
    13
About

H W KEARNS AND COMPANY LTD has a total of 13 patent applications. Its first patent ever was published in 1908. It filed its patents most often in United Kingdom, France and United States. Its main competitors in its focus markets machine tools, mechanical elements and measurement are STARRAGHECKERT GMBH, STAMA MASCHF GMBH and ERNAULT BATIGNOLLES S A H.

Patent filings in countries

World map showing H W KEARNS AND COMPANY LTDs patent filings in countries
# Country Total Patents
#1 United Kingdom 11
#2 France 1
#3 United States 1

Patent filings per year

Chart showing H W KEARNS AND COMPANY LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Slade James Parnell Trust 1
#2 Carden Kearns Joseph Richard 1
#3 Kearns Joseph Richard Carden 1
#4 H W Kearns And Company Ltd 1

Latest patents

Publication Filing date Title
GB621658A Improvements in the feed mechanism of combined boring and milling machines
GB550219A Improvements relating to clutch mechanism of the boring or drilling spindles of horizontal boring or drilling machines
GB549792A Improvements relating to boring tool holders for boring machines
GB499945A Improvements in combined surfacing and boring machines
GB501109A Improvements in and relating to journal bearings in machine tools
GB474954A Improvements in the driving and feed mechanism of boring, milling, drilling, tappingand facing machines
GB375715A Improvements in the feed mechanism of combined boring and milling machines
US1467043A Means for indicating and measuring the travel of moving parts of machine tools
GB194471A Improvements in means for indicating and measuring the travel of moving parts of machine tools
GB127167A Improvement in the Feed Controls of Combined Surfacing, Boring, Milling and Drilling Machines.
GB190909430A Improvements in or applicable to Feed and Reversing Motions of Reciprocating Tools.
GB190817999A Improvements in Mechanism for Operating Friction Clutches