Central vacuum interface for air exchanger

• US 6,218,798 B1
• Filed: 11/12/1999
• Issued: 04/17/2001
• Est. Priority Date: 11/12/1999
• Status: Expired due to Fees

• Current Assignee: Electrolux Home Care Products Limited (AB Electrolux)
• Original Assignee: White Consolidated Industries Incorporated
• Inventors: Johnson, Douglas E., Price, Tamara, Koestner, Mitch, Cunningham, Vern
• Primary Examiner(s): Ro, Bentsu
• Application Number:
  US09/439,784
• Time in Patent Office: 522 Days
• Field of Search: 318/41, 318/445, 318/446, 153/001, 153/01, 153/14, 454/228, 454/237, 454/238, 454/239, 454/370, 165/53
• US Class Current: 318/445
• CPC Class Codes: A47L 5/38 Built-in suction cleaner installations, i.e. with fixed tube system to which, at different stations, hoses can be connected
• CPC Class Codes: A47L 9/2842 Suction motors or blowers
• CPC Class Codes: A47L 9/2857 User input or output elements for control, e.g. buttons, switches or displays
• CPC Class Codes: A47L 9/2889 Safety or protection devices or systems, e.g. for prevention of motor over-heating or for protection of the user
• CPC Class Codes: A47L 9/2894 Details related to signal transmission in suction cleaners

Abstract

A central vacuum cleaner system having a motor driven vacuum source which is selectively turned on or off. The central vacuum cleaner has an interface connector for establishing a connection between the central vacuum and an air exchanger. The interface connector is connected to be activated by the central vacuum when the motor is turned on so as to activate the air exchanger.

Claims

1. A central vacuum cleaner system comprising, a motor driven vacuum source, the motor being selectively turned on or off, and an interface connector for establishing a connection between the central vacuum and an air exchanger, wherein the interface connector is connected to be activated by the central vacuum when the motor is turned on so as to activate the air exchanger.

2. The system according to claim 1, wherein the interface connector provides electrical isolation between the central vacuum and the air exchanger.

3. The system according to claim 1, wherein the interface connector is a set of terminals, the interface connector being activated by an establishment of electrical connectivity between the terminals.

4. The system according to claim 3, wherein the interface connector terminals are connected to a relay, the relay connected to trigger electrical connectivity between the terminals.

5. The system according to claim 4, wherein the relay is connected in parallel with the motor.