Flashing "door open" button for an elevator car

Patent 6230847 Issued on May 15, 2001. Estimated Expiration Date:

December 16, 2019. 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.

Abstract Claims Description Full Text

Patent References

Operating panel device for an elevator system
Patent #: 4716992
Issued on: 01/05/1988
Inventor: Kunii

Elevator call buttons having plural illuminated indications of availability and use
Patent #: 5454448
Issued on: 10/03/1995
Inventor: Bittar, et al.

Elevator car call buttons indicating car floor position Patent #: 5969306
Issued on: 10/19/1999
Inventor: Velauthapillai, et al.

Inventor

Skolnick, Steve

Assignee

Otis Elevator Company

Application

No. 464129 filed on 12/16/1999

US Classes:

187/395, HAVING CALL BUTTON WITH INDICATOR187/414MISCELLANEOUS

Examiners

Primary: Lillis, Eileen D.
Assistant: Tran, Thuy Vinh

Foreign Patent References

2-188383 JP. 07/12/1990
3-95093 JP. 04/12/1991
4-191250 JP. 07/12/1992
6-271258 JP. 09/12/1994
7-25556 JP. 01/12/1995
8-259128 JP. 10/12/1996
10-120325 JP. 05/12/1998

International Class

B66B 003/00

Abstract

A flashing "door open" button positioned on an elevator car control panel. The flashing button is connected to a door opener and flashes at predetermined times during the operation of an elevator.