US4829626A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for controlling a vacuum cleaner or a central vacuum cleaner
Assignee: ALLAWAY Oy
•
Filing: 1987-11-09
•
Granted: 1989-05-16
•
Expires: 2007-11-09
Abstract
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.
Inventors
- 👤 Jouko Harkonen
- 👤 Reino Mustalampi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:20
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/28; A47L9/2894; A47L5/00; A47L5/12; A47L5/22; A47L5/38; A47L9/2805; A47L9/2821; A47L9/2836
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
132 words
A method for controlling a central vacuum cleaner comprising a central machinery and a pipe system connecting said central machinery with a working point, in which method the central machinery is controlled in a wireless manner using the pipe system of the device as a transmission channel, comprising for the start-up of the central machinery the steps of transmitting sound or pressure impulses from the working point; detecting said impulses with an acoustic sensor; and starting the central machinery in response to the detection of the acoustic sensor; and for the stopping of the central machinery the steps of blocking the flow in the pipe system; detecting the stopping of the flow by means of a flow sensor; and stopping the central machinery in response to the detection of the flow sensor.
Claim 2
Independent Claim
132 words
A method for controlling a central vacuum cleaner comprising a central machinery and a pipe system connecting said central machinery with a working point, in which method the central machinery is controlled in a wireless manner using the pipe system of the device as a transmission channel, comprising for the start-up of the central machinery the steps of transmitting sound or pressure impulses from the working point; detecting said impulses with an acoustic sensor; and starting the central machinery in response to the detection of the acoustic sensor; and for the stopping of the central machinery the steps of blocking the flow in the pipe system; detecting the stopping of the flow by means of a flow sensor; and stopping the central machinery in response to the detection of the flow sensor.
Claim 3
Dependent Claim
28 words
A method of control according to claim 1, wherein the central machinery is stopped in response to the detection of the flow sensor after a predetermined time delay.
Claim 4
Dependent Claim
37 words
A method of control according to claim 1, wherein for the stopping of the central machinery the pipe system is blocked by means of a flap positioned in a handle of a suction pipe of the device.
Claim 5
Dependent Claim
20 words
A method of control according to claim 1, wherein the acoustic sensor is positioned in connection with the central machinery.
Claim 6
Dependent Claim
31 words
A method of control according to claim 1, wherein the sound or pressure impulses for starting the central machinery are sent from said handle of the suction pipe of the device.
Claim 7
Dependent Claim
30 words
A method of control according to claim 1, wherein the frequency of the sound or pressure impulses starting the central machinery is within the range of 0 to 20,000 Hz.
Claim 8
Dependent Claim
20 words
A method of control according to claim 1, wherein said flow sensor is positioned in connection with the central machinery.
Claim 9
Independent Claim
154 words
A system for controlling a central vacuum cleaner comprising a central machinery and a pipe arrangement connecting said central machinery with a working point, said central machinery being controlled in a wireless manner using the pipe arrangement as a transmission channel, comprising: means for transmitting sound or air pressure impulses from the working point to start up said central machinery; means including a sensor for detecting said impulses; means responsive to said detection means for starting said central machinery in response to the detection of energy by said sensor; means for stopping of said central machinery including means for blocking the flow of air in said pipe arrangement; means including an air flow sensor for detecting the stopping of the flow of the air in said pipe by said flow sensor; and means for stopping said central machinery in response to the detection of air flow stoppage in said pipe by said flow sensor.
Claim 10
Independent Claim
154 words
A system for controlling a central vacuum cleaner comprising a central machinery and a pipe arrangement connecting said central machinery with a working point, said central machinery being controlled in a wireless manner using the pipe arrangement as a transmission channel, comprising: means for transmitting sound or air pressure impulses from the working point to start up said central machinery; means including a sensor for detecting said impulses; means responsive to said detection means for starting said central machinery in response to the detection of energy by said sensor; means for stopping of said central machinery including means for blocking the flow of air in said pipe arrangement; means including an air flow sensor for detecting the stopping of the flow of the air in said pipe by said flow sensor; and means for stopping said central machinery in response to the detection of air flow stoppage in said pipe by said flow sensor.
Claim 11
Dependent Claim
40 words
The system according to claim 8, including time delay means coupled with said central machinery for stopping thereof in response to the detection by said flow sensor after a predetermined time delay of the air flow stoppage in said pipe.
Claim 12
Dependent Claim
19 words
The system according to claim 8, wherein said stopping means includes a flap operatively associated with said pipe arrangement.
Claim 13
Dependent Claim
32 words
The system according to claim 8, wherein said stopping means includes a handle coupled with said pipe arrangement and a flap in said handle for cutting off air flow through said handle.
Claim 14
Dependent Claim
19 words
The system according to claim 8, wherein said acoustic sensor is positioned in a connection with said central machinery.
Claim 15
Dependent Claim
15 words
The system according to claim 11, wherein said acoustic sensor is positioned in said handle.
Claim 16
Dependent Claim
30 words
The system according to claim 11, wherein the sound or pressure impulses for starting said central machinery are sent from said handle through said transmission channel to said central machinery.
Claim 17
Dependent Claim
40 words
The system of claim 11, wherein said transmission channel is a suction channel to which said handle is connectable, and said flap in said handle controls the sending of sound or pressure impulses to said central machinery for starting thereof.
Claim 18
Dependent Claim
28 words
The system according to claim 8, wherein the frequency of the sound or pressure impulses starting the central machinery is within the range of 0 to 20,000 Hz.
Claim 19
Dependent Claim
20 words
The system of claim 11, wherein the sound or pressure impulses is within the range of 0 to 20,000 Hz.
Claim 20
Dependent Claim
14 words
The system of claim 8, wherein the sound or pressure impulse is 16 Hz.
Claim 21
Dependent Claim
17 words
The system according to claim 8, wherein said air flow sensor is connected with said central machinery.
Claim 22
Dependent Claim
20 words
The system of claim 8, wherein said last-mentioned stopping means includes a swingable flap controllable from outside said pipe arrangement.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-05-15 | 1992-11-14 | 1993-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-15 | 1996-11-14 | 1997-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-15 | 2000-11-14 | 2001-05-16 | $7700.00 | Window Closed / Lapsed |