Time metering device particularly useful as a parking card

Patent 4717815 Issued on January 5, 1988. Estimated Expiration Date:

August 21, 2005. 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

Parking system
Patent #: 4310890
Issued on: 01/12/1982
Inventor: Trehn , et al.

Device for the use of and easily carried by an individual
Patent #: 4460965
Issued on: 07/17/1984
Inventor: Trehn , et al.

Security method and device for communicating confidential data via an intermediate stage
Patent #: 4498000
Issued on: 02/05/1985
Inventor: Decavele , et al.

Memory device
Patent #: 4544834
Issued on: 10/01/1985
Inventor: Newport , et al.

Portable electronic transaction device and system therefor Patent #: 4575621
Issued on: 03/11/1986
Inventor: Dreifus

Inventor

Tomer, Natan

Application

No. 06/767323 filed on 08/21/1985

US Classes:

235/378, Price determination235/380, Credit or identification card systems235/384, Transportation235/487, RECORDS235/492, Conductive368/90, Parking meter type705/418Time (e.g., parking meter)

Examiners

Primary: Trafton, David L.

Attorney, Agent or Firm

Barish; Benjamin J.

International Classes

G07C 1/00 (20060101)
G07C 1/30 (20060101)
G07F 7/08 (20060101)
G07F 7/00 (20060101)

Foreign Application Priority Data

1984-08-29 IL

Abstract

A time metering device particularly useful as a parking card comprises a time storage device for storing data representing total pre-purchased time; a time measuring device; time selector keys for manually selecting a predetermined time interval; a predetermined interval storage device; and an "off" key. The time metering device further includes an electrical circuit which decrements both the pre-purchased time storage device and the predetermined interval storage device according to the time measured by the time measuring device until the "off" key is operated, and a display which displays the remaining time in the pre-purchased and predetermined-interval storage devices.