Patent · US Expired

Device for locking and unlocking a door

US6522028B1 · kind B1 · utility

0Cited by

10References

12Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Stephan Schmitz · Stuttgart, DE
Gianfranco Pavatich · Melbourne, AU
Adrian Babber · Healesville, AU

Key dates

Filing date	Aug 11, 2000
Grant date	Feb 18, 2003
Priority date	—
Expiry date	Aug 11, 2020

Classification

Technology area (CPC G)Physics
CPC primaryG07C2209/63
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A device for locking and unlocking a door of an object, particularly of a motor vehicle, includes a transmitter unit disposed on the object and a transponder assigned to a user. Safety is increased because, in response to alignment of the transmission lobe with the interior of the object, the range of the field of the transmission lobe formed by the transmitter unit or of the signals emmitted by the transponder can be reduced or disturbed by a switching device, so that a transponder located in the passenger area of the interior cannot be queried.

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