History

Innovations are our constant companion for almost 90 years. Immerse yourself in our company history and get to know us and our most important milestones.

MIlestone

All companies have a story. In the lift industry, KRONENBERG counts among the pioneering companies. Join us on a journey through the history of the company - with our milestones in the KRONENBERG company chronicle.

2020-2011
  • Launch of new company logo and claim, digitalization
  • Pictogram NPV1
  • UL-certification CL(F)MO-UL
More

 

2019

  • New Corporate Identity, booth interlift 2019, new catalogues “door interlocks” and “switches”, video tutorials YouTube
  • Latch plate BL-V with large clearance of the bolt

2018

  • TFT-displays (3.2“ / 5“), TFT-Bus module with shaft wiring
  • Motorized retiring cam RKMO
  • Motorized door interlock CL(F)MO

2017

Takeover of the management by Mike Braun

  • Triangle-emergency release units and bowden cable connections for all door interlocks
  • New versions and type approval certificates for all door locks according to EN81-20/50

 

2016

Compact door lock CL(F)

2015

Door interlock with motorized actuation D(F)1MO

 

2014

  • Plug-in pushbutton system RP35
  • Lin-Bus call button with integrated travel continuation display

2013

TFT displays (4,3 " / 7 ")

2012

Door interlock EL(F)1 with monitoring of the emergency release according to EN 81-21

2011

  • Stamped pushbutton pressels for the pushbutton systems UT and XL
  • Floor position indicator PML4 with running text
  • Pushbutton system UT with waterprotection (IP54)
  • Pushbuttons RVB11 (convex) und RVD11 (flush with faceplate) with protection against vandalism
  • Digital rucksack hanger for floor position indicators (DSK1)
2020-2011
  • Launch of new company logo and claim, digitalization
  • Pictogram NPV1
  • UL-certification CL(F)MO-UL
More

 

2019

  • New Corporate Identity, booth interlift 2019, new catalogues “door interlocks” and “switches”, video tutorials YouTube
  • Latch plate BL-V with large clearance of the bolt

2018

  • TFT-displays (3.2“ / 5“), TFT-Bus module with shaft wiring
  • Motorized retiring cam RKMO
  • Motorized door interlock CL(F)MO

2017

Takeover of the management by Mike Braun

  • Triangle-emergency release units and bowden cable connections for all door interlocks
  • New versions and type approval certificates for all door locks according to EN81-20/50

 

2016

Compact door lock CL(F)

2015

Door interlock with motorized actuation D(F)1MO

 

2014

  • Plug-in pushbutton system RP35
  • Lin-Bus call button with integrated travel continuation display

2013

TFT displays (4,3 " / 7 ")

2012

Door interlock EL(F)1 with monitoring of the emergency release according to EN 81-21

2011

  • Stamped pushbutton pressels for the pushbutton systems UT and XL
  • Floor position indicator PML4 with running text
  • Pushbutton system UT with waterprotection (IP54)
  • Pushbuttons RVB11 (convex) und RVD11 (flush with faceplate) with protection against vandalism
  • Digital rucksack hanger for floor position indicators (DSK1)
2010-2001

2010

Cooperation with Safeline

2009

More
  • Door switch and switch for locking mechanism HZTK
  • Door interlock DLF1EM with monitoring of emergency release (EN 81-21)
  • Standard pushbutton system UT

2008

  • Digital speech unit DSA2
  • Door interlock for French building construction norm (MV24)

2007

15th November 2007: 75th company anniversary with international customers, suppliers, partner, representatives of the trade
press and shareholders.


  • Pictograms for escalators
  • Door interlock for EN 81-71

2005

Add-on units for EN 81-71 and EN 81-21

2004

  • Large sized pushbuttons XL fixed on the faceplate according to EN 81-70
  • CANopen-adapter CBK1

2003

Door interlock with electromagnetic actuation DLF1 EM

2001

Round pushbutton RQ 30

2000-1991

1999

Illuminated fields with LED-illumination

1998

Dot matrix display PMA

1997

More
  • Key-encoding keypad TC 3
  • Shaft switch ESK
  • Pushbutton system QA / QP

1996

Safety switch with 3 contacts WZK

1995

Door switch (forced contact) HZS

1994

Minimum travel pushbutton with prewiring

1993

Projecting operating panel

1992

Safety switch with actuation from any direction WZA

1990-1981

1989

Explosion-proof devices

1988

  • Participation at the first fair for lift accessories in Germany “LIFTIMA”
  • Explosion-proof devices
More

1986

  • Participation as exhibitor at fair in Nice
  • Short-stroke pushbutton KU

  • New building and move into today’s premises in Bergisch Gladbach, Kurt-Schumacher-Str. 1

1983

Safety switch with locking mechanism WZV

1982

50th company anniversary

1981

Optoelectronic sensor pushbutton OT 1

1980-1971

1979

Switch for locking mechanism HZ

More

1978

Pushbutton series with row switching elements

1977

Safety switch water-protected WZ

1973

Door switch (forced contact) PZ 73, DZ 73

1971

  • Death of both company founders within just one week: Hans Kronenberg died at the end of February 1971 at the age of 67. Only six days later, his brother Josef died at the age of 69 of a heart attack.
  • Transformation of the company into a private limited company
1970-1961

1970

Set-up of international representations: first representation in Belgium

1969

Acquisition of new premises and building of a warehouse in the Bensberger industrial estate, Kurt-Schumacher-Straße 1

More

1967

Door frame mounting box

1966

Roller type contact RZ

1960-1951

1958

  • Expansion into other European countries. First partnerships are created with the companies Siminor (today OCTÉ) for France and Bot (today Wittur) for the Netherlands (both existing our partners until today
  • First exports to France and the Netherlands
  • First door interlock with faulty closure device
More

1957

  • Move to Bensberg near Cologne, Industrieweg 18 and thus end of the single-part production and start of the serial production
  • Druckknopftafeln mit Signallampen

1953

Entry as ordinary partnership
1950-1930

1949

First direction limit switch US

More

1938

First patent for door switch (forced contact) PZ 1-3

1932

15th November Founding of the company by the brothers Hans & Josef Kronenberg, head office in Cologne-Nippes, business registration for the manufacture and sale of electrical switching devices .Until the end of the Second World War, the brothers ran the business in addition to their main activity as lift technicians in a backyard in Cologne.

First limit switch HJK 1