Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filedfiledCritical
Publication of BE728510ApublicationCriticalpatent/BE728510A/xx
G07F17/00—Coin-freed apparatus for hiring articles; Coin-freed facilities or services
G07F17/14—Coin-freed apparatus for hiring articles; Coin-freed facilities or services for fastenings for doors; for turnstiles
G07F17/145—Coin-freed apparatus for hiring articles; Coin-freed facilities or services for fastenings for doors; for turnstiles for revolving doors or turnstiles
G—PHYSICS
G07—CHECKING-DEVICES
G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
G07C1/00—Registering, indicating or recording the time of events or elapsed time, e.g. time-recorders for work people
G07C1/30—Parking meters
H—ELECTRICITY
H03—ELECTRONIC CIRCUITRY
H03K—PULSE TECHNIQUE
H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
H03K17/28—Modifications for introducing a time delay before switching
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
Traffic Control Systems
(AREA)
Devices For Checking Fares Or Tickets At Control Points
(AREA)