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(12)

United

States

Patent

Ewing

a1.

US008541906B2

8,541,906

Sep.

24,

2013

(10)

Patent

N0.:

(45)

Date

Patent:

(54)

(75)

(73)

(*)

(21)

(22)

(65)

(63)

(60)

(51)

(52)

(58)

POLYPHASE

POWER

DISTRIBUTION

AND

MONITORING

APPARATUS

Inventors:

Carrel

Ewing,

Reno,

(US);

Andrew

Cleveland,

Reno,

S);

James

Maskaly,

Sparks,

(US)

Assignee:

Server

Technology,

Inc.,

Reno,

(Us)

Notice:

Subject

any

disclaimer,

the

term

this

patent

extended

or adjusted

under

U.S.C.

154(b)

days.

Appl.

No.:

13/181,390

Filed:

Jul.

12,

2011

Prior

Publication

Data

2012/0007423

Jan.

12,

2012

US.

Application

Data

Continuation

application

No.

12/

857,420,

?led

Aug.

16,

2010,

now

Pat.

No.

7,977,815,

which

continuation

application

No.

12/

194,390,

?led

Aug.

19,

2008,

now

Pat.

No.

7,777,365,

which

continuation

application

No.

10/698,023,

?led

Oct.

31,

2003,

now

Pat.

No.

7,414,329.

Provisional

application

No.

60/516,671,

?led

Oct.

30,

2003.

Int.

Cl.

H02]

3/00

US.

Cl.

USPC

..........................................................

307/13

Field

Classi?cation

USPC

........................................

307/11,13,

14,27

See

application

?le

for

complete

history.

(2006.01)

(56)

References

Cited

U.S.

PATENT

DOCUMENTS

6,476,729

11/2002

Liu

........................

340/87011

6,967,283

11/2005

Rasmussen

al.

7,271,506

9/2007

Bersiek

OTHER

PUBLICATIONS

Server

Technology,

Inc.;

“Amended

Complaint

for

Patent

Infringe

ment

Jury

Demand

and

Exhibits”;

Server

Technology,

Inc.

American

Power

Conversion

Corporation;

Case

No.

3:11-CV

00068-ECR-(RAM);

Apr.

28,

2011;

pp.

American

Power

Conversion

Corp;

“American

Power

Conversion

Corporation’s

Initial

Defenses

and

Counterclaims

Plaintiff’s

Amended

Complaint”;

Server

Technology,

Inc.

American

Power

Conversion

Corporation;

Case

No.

3:11-CV-00068-ECR-(RAM);

May

12,

2011;

pp.

American

Power

Conversion

C0rp.,

American

Power

Conversion

Corporation’s

Initial

Disclosure

Non-Infringement,

Invalidity,

and

Unenforceability

Contentions;

Server

Technology,

Inc.

American

Power

Conversion

Corporation;

Case

No.

3:11-CV-00068-ECR

(RAM);

Dec.

16,2011;

pp.

(Continued)

Primary

Examiner

Carlos

Amaya

(74)

Attorney,

Agent,

Firm

Holland

Hart

LLP

(57)

ABSTRACT

polyphase

power

distribution

and

monitoring

apparatus

having

sets

outputs

for

each

phase

power

and

monitors

for

each phase of

power

disposed

the

housing.

Each

moni

tor

provides

visible

display

current

for

associated

phase

power

and

audible

alarm

for

each phase of

power

the

current

exceeds

predetermined

value

falls

below

predetermined

value.

three-phase

wye

power

systems,

the

apparatus

preferably

includes

neutral

line

monitor, includ

ing

neutral

line

current

display

and

audio

alarm,

for

the

neutral

line

the

wye

power

circuit.

The

apparatus

prefer

ably

lightweight,

elongated,

portable,

and

mountable

the

side

electronic

equipment

rack.

may

also

include

additional

power

monitoring

systems

such

network

power

monitoring

tools

for

remotely

monitoring

the

apparatus.

Claims,

Drawing

Sheets

4X1EC320

LEI

1%.

1 2 3 4 5 6 ... 11 12

Summary of Contents

Page 1 - Patent:

(12) United States Patent Ewing et a1. US008541906B2 US 8,541,906 B2 Sep. 24, 2013 (10) Patent N0.: (45) Date of Patent: (54) (75) (73) (*) (21) (22)

Page 2

US 8,541,906 B2 7 a display system disposed on the face of the vertical rack mountable housing comprising: a ?rst display segment in power information

Page 3 - ~@@@@E@@@

UNITED STATES PATENT AND TRADEMARK OFFICE CERTIFICATE OF CORRECTION PATENT NO. 2 8,541,906 B2 Page 1 0f2 APPLICATION NO. : 13/181390 DATED : September

Page 4 - 3-PHASE

CERTIFICATE OF CORRECTION (continued) Page 2 0f 2 US. Pat. No. 8,541,906 B2 In column 2, line 46, delete “intput” and insert -- input --, therefor. In

Page 5 - 14XlEC320

US 8,541,906 B2 Page 2 (56) References Cited OTHER PUBLICATIONS Server Technology, Inc.; “Second Amended Complaint for Patent Infringement and Jury De

Page 6 - 14X

US. Patent Sep. 24, 2013 Sheet 1 014 US 8,541,906 B2 D><1r /10 Eu 35.5" E 1 EE I]. k +@@@@ ~@@@@E@@@ 1 .75" 3-PHASE WYE POWER CORD FIG

Page 7

US. Patent Sep. 24, 2013 Sheet 2 0f4 US 8,541,906 B2 /60 64 3-PHASE WYE POWER CORD FIG. 2

Page 8

US. Patent Sep. 24, 2013 Sheet 3 0f4 US 8,541,906 B2 14XIEC320 14XlEC320 1 4X|EC320 FIG. 3

Page 9

US. Patent Sep. 24, 2013 Sheet 4 0f4 US 8,541,906 B2 14X|EC320 14XIE0320 14X| E0320 50 FIG. 4

Page 10

US 8,541,906 B2 1 POLYPHASE POWER DISTRIBUTION AND MONITORING APPARATUS This application is a continuation of Us. patent applica tion Ser. No. 12/857,

Page 11 - WMZ44L_

US 8,541,906 B2 3 button on the plugstrip to cycle through and observe the current indicators for the various phases. In the ease of a wye connected s

Page 12 - 8,541,906

US 8,541,906 B2 5 or through associated branch outputs or outlets, e.g., 46. Each such outlet, e.g., 46, includes an output line 50 grounded to the ho