The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 16, 1989
Filed:
Nov. 09, 1987
Jouko Harkonen, Verkkoniemi, FI;
Reino Mustalampi, Verkkoniemi, FI;
Allaway Oy, Jyvaskyla, FI;
Abstract
The invention relates to a method of control for a device such as a vacuum cleaner or a central vacuum cleaner comprising a central machinery and a pipe or a pipe system connecting the central machinery with a working point. In order to avoid the installation of control conductors connecting the working points with the central machinery, the operation of the central machinery is controlled according to the invention in a wireless manner by means sound or pressure impulses transmitted from the working point to a receiving sensor using the pipe or the pipe system of the device as a transmission channel, whereby for the start-up of the central machinery, sound or pressure impulses are transmitted from the working point; said impulses are detected with an acoustic sensor; and the central machinery is started in response to the detection of the acoustic sensor; and for the stopping of the central machinery, the flow in the pipe system is blocked; the stopping of the flow is detected by means of a flow sensor; and the central machinery is stopped in response to the detection of the flow sensor.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile