Patent · US Active

Apparatus for monitoring the state of a protective device of a machine

US8289112B1 · kind B1 · utility

1Cited by

8References

9Claims

0Family size

Assignee

Euchner GmbH + Co. KG · DE

Inventors

Erik Bachle · Echterdingen, DE
Walter Link · Rutesheim, DE

Key dates

Filing date	Jun 5, 2012
Grant date	Oct 16, 2012
Priority date	—
Expiry date	Jun 5, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH01H2027/005
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

An apparatus (1) monitors a protective device (2) of a machine (4). The apparatus (1) has a switch housing (22) with a switch head (24) and an actuator (8). In the closed state of the protective device (2), the actuator interacts with the switch head (24) with that closed state being signaled. The apparatus (1) has a tumbler device (20) with a tumbler element (30) mounted movably in the apparatus (1) to lock releasably the closed state. The tumbler device (20) has a permanent magnet (34). The magnetic force fixes the tumbler element (30) in a first position when the power supply to the apparatus (1) is switched off to lock the closed state of the protective device (2), in a second position with the tumbler device (20) not locking the closed state.

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