U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Remote keyless entry system with advanced activation features

Patent 6677851 Issued on January 13, 2004. Estimated Expiration Date: Icon_subject August 14, 2020. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Remote control device
Patent #: 5379033
Issued on: 01/03/1995
Inventor: Fujii, et al.

Keyless access control device
Patent #: 5723911
Issued on: 03/03/1998
Inventor: Glehr

Hands-free remote entry system
Patent #: 5973611
Issued on: 10/26/1999
Inventor: Kulha, et al.

Operator intent based passive keyless vehicle control system
Patent #: 6034617
Issued on: 03/07/2000
Inventor: Luebke, et al.

Remote keyless entry system having passive transmission mode Patent #: 6181254
Issued on: 01/30/2001
Inventor: Vogele

Inventor

Application

No. 09/638487 filed on 08/14/2000

US Classes:

340/5.62, Including manual switching means340/5.61Wireless transceiver

Examiners

Primary: Horabik, Michael
Assistant: Nguyen, Nam

International Classes

G05B 19/00 (20060101)
H04B 1/00 (20060101)
H04Q 1/00 (20060101)
G06F 7/00 (20060101)
G08B 29/00 (20060101)

Abstract

Keyless entry systems generate a signal to actuate a security system on a vehicle when keyless entry system is outside of a range of the vehicle. The signal is transmitted to the vehicle once the keyless entry system is within range. In a first embodiment, the signal continues to be sent periodically over a period of time such that the operator can move within range of the vehicle. In a second embodiment, the request signal is stored at the keyless entry system until the keyless entry system receives a signal from the vehicle, which then indicates the keyless entry system is within range of the vehicle. At that time, the signal is sent to the vehicle. This invention facilitates the use of keyless entry systems for a person carrying a number of packages, such that the operator need not actuate the keyless entry system when approaching the vehicle. Further, the system would allow the operator to keep the keyless entry system concealed when approaching the vehicle so as not to provide an indication of which vehicle the operator is approaching.

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