Learn more

FORMSPRAG CO

Overview
  • Total Patents
    203
About

FORMSPRAG CO has a total of 203 patent applications. Its first patent ever was published in 1945. It filed its patents most often in United States, France and Canada. Its main competitors in its focus markets mechanical elements, machines and packaging and shipping are WELLMAN BIBBY CO LTD, HANSEN QUINTEN A and ANSTRO MFG INC.

Patent filings in countries

World map showing FORMSPRAG COs patent filings in countries
# Country Total Patents
#1 United States 44
#2 France 40
#3 Canada 38
#4 United Kingdom 37
#5 Germany 25
#6 Switzerland 10
#7 Sweden 5
#8 Italy 2
#9 Belgium 1
#10 Brazil 1

Patent filings per year

Chart showing FORMSPRAG COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Szady Leopold T 25
#2 Zlotek Thaddeus F 21
#3 Lund Johan 13
#4 Zlotek Thaddeus Frank 8
#5 Kalns Ilmars 7
#6 Johan Lund 6
#7 Formsprag Company 5
#8 Gruenberg Ivor J 4
#9 Candela Giovan B 3
#10 Leopold T Szady 3

Latest patents

Publication Filing date Title
CA949008A Positive lubrication hydraulic disc clutch
US3800928A Positive lubrication hydraulic disc clutch
CA950065A Anti-reverse clutch safety device
CA944296A Hollow sprag
CA947212A Hydraulic disc clutch
US3805933A Hydraulically operated disc clutch
CA918583A Hydraulically operated disc clutch
US3613846A Hollow sprag
GB1223813A Bi-directional no-back and torque limiting unit with augmented brake feature
US3498429A Sprag and sprag clutch assembly
DE1625712B1 Backstop effective in both directions of rotation
US3497044A Torque responsive brake with pivoted friction inserts
US3335832A Self-neutralizing manual override clutch
US3414095A Balanced bi-directional no-back drive mechanism
GB1116148A Manual override clutch
US3335831A Bi-directional no-back drive device
US3314510A Dual drive control clutch
US3302761A Sprag lock retainer assembly
US3285377A Torque released one way brake
US3282746A Method of hardening wear surfaces and product