Volker Hentschel

Person

Dorsten, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Form for concrete-placement tunnel lining
- Patent number 4,856,936
- Issue date Aug 15, 1989
- Hochtief Aktiengesellschaft Vorm. Gebr. Helfmann
- Volker Hentschel
- E21 - EARTH DRILLING MINING
Information Patent Grant
Process and apparatus for lining a tunnel with concrete
- Patent number 4,854,776
- Issue date Aug 8, 1989
- Hochtief Aktiengesellschaft Vorm. Gebr. Helfmann
- Volker Hentschel
- E21 - EARTH DRILLING MINING
Information Patent Grant
Excavator for making a substantially vertical slot in the ground
- Patent number 4,785,559
- Issue date Nov 22, 1988
- Hochtief Aktiengesellschaft Vorm. Gebr. Helfmann
- Volker Hentschel
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Apparatus for excavating a substantially vertical slot
- Patent number 4,744,425
- Issue date May 17, 1988
- Hochtief Aktiengesellschaft Vorm. Gebr. Helfmann
- Volker Hentschel
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Tunnel excavator
- Patent number 4,729,693
- Issue date Mar 8, 1988
- Hochtief Aktiengesellschaft vorm, Gebr. Helfmann
- Volker Hentschel
- E21 - EARTH DRILLING MINING
Information Patent Grant
Movable form front for a tunnel-lining form
- Patent number 4,645,378
- Issue date Feb 24, 1987
- Gochtief Ag Vorm. Gebr. Helfmann
- Volker Hentschel
- E21 - EARTH DRILLING MINING
Information Patent Grant
Apparatus for the construction of tunnels and shafts
- Patent number 4,640,646
- Issue date Feb 3, 1987
- Hochtief Aktiengesellschaft Vorm. Gebr. Helfmann
- Volker Hentschel
- E21 - EARTH DRILLING MINING
Information Patent Grant
Tunneling machine
- Patent number 4,627,765
- Issue date Dec 9, 1986
- Hochtief Aktiengesellschaft Vorm. Gebr. Helfmann
- Volker Hentschel
- E21 - EARTH DRILLING MINING
Information Patent Grant
Tunnel lining form
- Patent number 4,621,948
- Issue date Nov 11, 1986
- Hochtief Ag Vorm. Gebruder Helfmann
- Volker Hentschel
- E21 - EARTH DRILLING MINING
Information Patent Grant
Apparatus for setting and removing tunnel casing rings
- Patent number 4,613,258
- Issue date Sep 23, 1986
- Hochtief Aktiengesellschaft Vorm. Gebr. Helfmann
- Volker Hentschel
- E21 - EARTH DRILLING MINING
Information Patent Grant
Bearing arrangement for a boring head of a tunneling machine
- Patent number 4,568,202
- Issue date Feb 4, 1986
- Hochtief AG Vorm. Gebr. Helfmann
- Volker Hentschel
- E21 - EARTH DRILLING MINING

Volker Hentschel

Person

Patents Grantslast 30 patents

Form for concrete-placement tunnel lining

Process and apparatus for lining a tunnel with concrete

Excavator for making a substantially vertical slot in the ground

Apparatus for excavating a substantially vertical slot

Tunnel excavator

Movable form front for a tunnel-lining form

Apparatus for the construction of tunnels and shafts

Tunneling machine

Tunnel lining form

Apparatus for setting and removing tunnel casing rings

Bearing arrangement for a boring head of a tunneling machine