Patent · US Active

Door operator

US9790723B2 · kind B2 · utility

5Cited by

10References

15Claims

0Family size

Assignee

DORMA DEUTSCHLAND GMBH · DE

Inventors

Volker Bienek · Dortmund, DE
Alexander Hellwig · Ennepetal, DE

Key dates

Filing date	Dec 15, 2015
Grant date	Oct 17, 2017
Priority date	—
Expiry date	Dec 15, 2035

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE05F3/16
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A door operator includes a housing and at least one linearly guided piston in the housing. A roller carrier is disposed in the piston and includes a rotatably movable supported pressure roller. The piston is formed as a deep drawn structural component and includes a bottom and a circumferential walling. The support and the axial guiding of the roller carrier with a pressure roller within the piston can be realized in a simple and cost effective manner. Furthermore, an aperture is provided in the bottom of the piston, through which the pressure roller protrudes to the outside beyond the bottom of the piston.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.