US 11,078,707 B2Granted

Safety contact strip

AssigneeASO GmbH Antriebs-und Steuerungstechnik

InventorsHelmut Friedrich, Nick Klause, Hubert Stroop

Life of this patent

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Abstract

A safety contact strip for a closing edge includes an inner shell facing the closing edge and being formed by a coextrudate of a first electrically insulating plastic. An outer shell spaced apart from the inner shell is formed by a coextrudate of a second electrically insulating plastic. Switching chambers respectively retained by at least one web between the inner and outer shells are formed with the outer shell. Two switching layers spaced apart from one another are formed in each switching chamber by a coextrudate of a third electrically conductive plastic. An electrical conductor is embedded in each of the switching layers as a further coextrudate.

Claims12

Dependent claims

A safety contact strip for a closing edge, the safety contact strip comprising:

an L-shaped, C-shaped or U-shaped profile of the safety contact strip for at least partially encompassing the closing edge;
an inner shell facing the closing edge, said inner shell being formed by a coextrudate of a first electrically insulating plastic;
an outer shell spaced apart from said inner shell, said outer shell being formed by a coextrudate of a second electrically insulating plastic;
webs disposed between said inner and outer shells;
switching chambers formed with said outer shell, each of said switching chambers being retained by at least one of said webs;
mutually spaced-apart switching layers formed by a coextrudate of a third electrically conducive plastic, each of said switching chambers receiving a respective two of said switching layers;
and
electrical conductors each being embedded as a further coextrudate in a respective one of said switching layers.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/621,984Filed 23 Apr 2018
Priority: DE 10 2017 005 51412 Jun 2017
Published: US 2020/0149337 A114 May 2020
Granted: 3 Aug 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

E05F 15/44
Detection using safety edges: responsive to changes in electrical conductivity
E05Y 2800/455
Manufacturing: extrusion
E05F
Devices for moving wings into open or closed position
E05Y
Indexing scheme associated with subclasses e05d and e05f, relating to construction elements

Family

US 2020/0149337 A1Pre-grant publication · published 14 May 2020
US 11,078,707 B2This patent

From the US filing history. Foreign family members aren’t listed.

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