Electrical power control outlet and system

• US 7,791,864 B2
• Filed: 02/07/2008
• Issued: 09/07/2010
• Est. Priority Date: 02/09/2007
• Status: Active Grant

• Current Assignee: Las Vegas Sands Corporation (Estate of Adelson Sheldon Gary)
• Original Assignee: Interface Group - Nevada, Inc.
• Inventors: Heller, Richard, Roman, Dan, Matyas, Raymond T., Corona, Sergio
• Primary Examiner(s): Vortman; Anatoly
• Application Number:
  US12/027,446
• Publication Number:
  US 20080191831A1
• Time in Patent Office: 943 Days
• Field of Search: 337/4, 337/198, 337/6, 337/186, 337/187, 361/622, 361/630, 361/642
• US Class Current: 361/630
• CPC Class Codes: H01H 85/24 Means for preventing insertion of incorrect fuse
• CPC Class Codes: H01H 85/32 Indicating lamp structurally associated with the protective device
• CPC Class Codes: H01R 13/6397 with means for preventing unauthorised use
• CPC Class Codes: H01R 13/68 with built-in fuse
• CPC Class Codes: H01R 25/003 the coupling part being secured only to wires or cables

Abstract

Devices, systems and methods for regulating the distribution of electricity at events such as trade shows to prevent exhibitors from utilizing electricity not purchased from the convention center or other entity controlling electricity distribution, including lockable electric outlet boxes having a lockable fuse holder containing a fuse that restricts or limits a specific electrical outlet box or group of outlet boxes to a maximum electrical current or amperage.

Claims

1. A convention center trade show exhibitor electrical power control system comprising:

a master electrical power distribution system powered by a public or private electrical utility;

an electrical power control outlet electrically connected to the power distribution system and adapted to provide fused electrical power to the trade show exhibitor, the outlet comprising;

a housing made of an electrical insulator;

an electrical power receptacle positioned in the housing;

a fuse holder positioned in the housing, in electrical circuit with the electrical power receptacle and the electrical power distribution system, and having a cavity adapted to contain a fuse;

an electrical power availability indicator contained in the housing, in circuit with the electrical power receptacle and the electrical power distribution system, and adapted to indicate availability of electrical power to the electrical power receptacle; and

,

a lock having a locked position and an unlocked position, the locked position preventing access to the fuse holder but not the electrical power receptacle.

2. The power control system of claim 1 wherein the housing is made of a translucent polycarbonate.

3. The power control system of claim 1 wherein the electrical power receptacle is a 20 ampere, nominal 115-126 VAC, duplex receptacle.

4. The power control system of claim 1 wherein the fuse holder is a panel mount fuse holder adapted to hold a 5, 10 or 20 amp fuse.

5. The power control system of claim 1 wherein the electrical power availability indicator is a light emitting diode.

6. The power control system of claim 1 wherein the electrical power control outlet is connected to the power distribution system through a strain relief fitting.

7. The power control system of claim 1 wherein

the system further includes a locking bar adapted for movement from the unlocked position to the locked position, and from the locked position to the unlocked position;

the housing further includes a cavity within which the locking bar is positioned; and

,

the housing further includes a cavity within which the lock is positioned.

8. The power control system of claim 1 further including:

a locking bar having a length, width and thickness;

the locking bar having a u-shaped region along its length;

the locking bar having an aperture along its length;

whereby the locking bar u-shaped region abuts the fuse holder and the locking bar aperture receives a plunger of the lock when the lock is in the locked position.

9. The power control system of claim 1 in which the lock is a single plunger, barrel lock.

10. The power control system of claim 1 wherein the fuse cavity is accessible through an opening in the housing and the locked position of the lock prevents access to the opening for the fuse cavity.

11. A method of providing electrical power to trade show exhibitors comprising:

providing a master electrical power distribution system;

providing an electrical power control outlet capable of electrical connection to the power distribution system and adapted to provide fused electrical power to a trade show exhibitor;

the outlet comprising;

a housing made of an electrical insulator;

an electrical power receptacle positioned in the housing;

a fuse holder positioned in the housing, in electrical circuit with the receptacle, having a cavity adapted to contain a fuse and having a cap adapted to cover the cavity;

an electrical power availability indicator contained in the housing, in circuit with the receptacle, and adapted to indicate the presence of electrical power to the receptacle;

the housing including a first recess that retains a single plunger, barrel lock;

the housing including a second recess that slidably retains a locking bar;

the locking bar having length, width and thickness;

the locking bar having a u-shaped region along its length;

the locking bar having an aperture along its length;

placing a fuse in the fuse holder cavity;

closing the fuse holder cap to cover the cavity with the fuse inside the cavity;

sliding the locking bar in the second recess to a position whereby the locking bar u-shaped region abuts the fuse holder cap;

operating a lock key to position the lock plunger in the locking bar aperture to lock the fuse in place in the fuse holder and to prevent access to the cavity;

removing the key from the lock; and

,

energizing the outlet by electrically connecting the outlet to the power distribution system.