# US 2013/0156489 A1 · Locking apparatus

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- Number: US 2013/0156489 A1
- Document ID: US20130156489A1
- Status: Published application
- Kind: A1
- Application number: 13/340,715
- Filed: 2011-12-30
- Published: 2013-06-20
- Earliest claimed: 2011-12-17
- Assignees: Hon Hai Precision Industry Co., Ltd.; HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD.
- Inventors: XIANG CAO
- Web page: https://patentgrep.com/patent/US20130156489A1

## CPC

- G06F 1/183: Internal mounting support structures, e.g. for supporting printed circuit boards
- G08B 13/14: by lifting or attempted removal of hand-portable articles
- Y10T 403/20: with indicator or inspection means
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- G08B: SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A locking apparatus includes a first threaded member, a second threaded, two pins, an alarm, and a micro-control unit. When the second threaded member engages in the first threaded member, the micro-control unit deactivates the alarm. When the second threaded shank disengages from the first threaded member, the micro-control unit activates the alarm.

## Claims

### Claim 1

A locking apparatus for locking a first object to a second object, comprising:
a first threaded member comprising a first threaded shank, wherein an accommodating hole is defined along an axis of the first threaded member, the first threaded shank engages in mounting holes of the first object the second object to connect the first object to the second object;
a second threaded member comprising a second threaded shank;
first and second conductive pins extending through a bottom of the first threaded shank and insulated from the bottom of the first threaded shank;
an alarm; and
a micro-control unit comprising a power terminal connected to a first end of the first pin located outside the accommodating hole, an input/output terminal connected to a first end of the second pin located outside the accommodating hole, and a control terminal connected to the alarm;
wherein when the second threaded shank engages in the accommodating hole and contacts with second ends of the first and second pins located in the accommodating hole, the first and second pins are connected to each other, such that the power terminal is connected to the input/output terminal, the micro-control unit deactivates the alarm; when the second threaded shank disengages from the accommodating hole, the first and second pins are disconnected from each other, such that the power terminal is disconnected from the input/output terminal, the micro-control unit activates the alarm.

### Claim 2 (depends on 1)

The locking apparatus of claim 1, wherein the first threaded member further comprises a first head portion, the first threaded shank extends from a bottom of the first head portion, the second threaded member further comprises a second head portion, the second threaded shank extends from a bottom of the second head portion, a diameter of the second head portion is greater than a diameter of the accommodating hole, and is less than a diameter of the first head portion.