# US 9,434,582 B2 · Dual crane apparatus and method of use

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- Number: US 9,434,582 B2
- Document ID: US9434582B2
- Status: Granted
- Kind: B2
- Application number: 14/097,814
- Filed: 2013-12-05
- Published: 2014-06-05
- Granted: 2016-09-06
- Earliest claimed: 2012-12-05
- Applicants: Brady Paul Arthur; David Lloyd Arthur
- Inventors: Brady Paul Arthur; David Lloyd Arthur
- Web page: https://patentgrep.com/patent/US9434582B2

## CPC

- B66C 23/18: specially adapted for use in particular purposes
- B66C 23/00: Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes (base supporting structures with legs B65C5/00)
- Y10T 29/4973: Replacing of defective part
- B66C: CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES ({specially adapted for lifting invalids A61G7/10;} rope, cable, or chain winding mechanisms, braking or detent devices therefor B66D; specially adapted for nuclear reactors G21)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A dual crane apparatus and a method of use are disclosed herein. The disclosed dual crane apparatus generally comprises a support frame and two rotating crane members mounted to the support frame, wherein the crane members can each independently move up and down in a vertical direction, extend and retract in a horizontal direction, and rotate clockwise and counterclockwise. The disclosed dual crane apparatus can be utilized for servicing mobile irrigation systems.

## Claims

### Claim 1

A dual crane apparatus, comprising:
a support frame including:
a first mounting structure configured for attachment of a first rotating crane member;
a second mounting structure connected to said first mounting structure via a base, said second mounting structure configured for attachment of a second rotating crane member; and
said base forming the bottom surface of said first mounting structure and said second mounting structure; said first and second rotating crane members are able to rotate relative each other;
said first rotating crane member mounted to said first mounting structure, wherein said first crane member comprises:
a first vertical arm having a first end and a second end,
a first telescoping horizontal arm having a first end and a second end, said first end being articulately coupled to said second end of said first vertical arm, and
a first actuating arm having a first end and a second end, said second end being attached to said first telescoping horizontal arm, wherein said first actuating arm is arranged and configured to move said second end of said first telescoping horizontal arm up and down; and
said second rotating crane member mounted to said second mounting structure, wherein said second crane member comprises:
a second vertical arm having a first end and a second end,
a second telescoping horizontal arm having a first end and a second end, said first end being articulately coupled to said second end of said second vertical arm, and
a second actuating arm having a first end and a second end, said second end being attached to said second telescoping horizontal arm, wherein said second actuating arm is arranged and configured to move said second end of said second telescoping horizontal arm up and down; and
one or more legs attached to said base, wherein said one or more legs hold up said base and said support frame above a ground surface.

### Claim 2 (depends on 1)

The apparatus according to claim 1, wherein said first mounting structure and said second mounting structure are covered by side panels and at least one of said side panels is attached to said support frame using hinged attachment members.

### Claim 3 (depends on 1)

The apparatus according to claim 1, wherein said first mounting structure further includes at least one toolbox mounted inside said first mounting structure.

### Claim 4 (depends on 1)

The apparatus according to claim 1, wherein said one or more legs further comprise one or more feet members fastened to said one or more legs, wherein said one or more feet members are fastened to said one or more legs in a manner which allows said one or more feet members to be partially unfastened from said one or more legs to allow said feet members to swivel at least ninety degrees such that said one or more feet members are perpendicular to said one or more legs.

### Claim 5 (depends on 1)

The apparatus according to claim 1, further comprising a carrying area positioned between said first mounting structure and said second mounting structure, wherein said carrying area includes three solid side surfaces, a solid bottom surface formed by said base, one open side surface, and an open top surface.

### Claim 6 (depends on 5)

The apparatus according to claim 5, wherein said carrying area further includes a restraining member to restrain items from falling out said open side surface.

### Claim 7 (depends on 1)

The apparatus according to claim 1, wherein said apparatus further includes one or more attachment members fixed to said support frame, said one or more attachment members being arranged and configured for releasably attaching said support frame to a mobile carrying unit.

### Claim 8 (depends on 1)

The apparatus according to claim 1, further comprising:
a first rotating plate attached to said first mounting structure, wherein said first end of said first vertical arm is mounted to said first rotating plate and said first end of said first actuating arm is mounted to said first rotating plate; and
a second rotating plate attached to said second mounting structure, wherein said first end of said second vertical arm is mounted to said second rotating plate and said first end of said second actuating arm is mounted to said second rotating plate.

### Claim 9 (depends on 8)

The apparatus according to claim 8, further comprising:
a first fixed plate mounted to said first mounting structure, wherein said first rotating plate is attached to a top surface of said first fixed plate; and
a second fixed plate mounted to said second mounting structure, wherein said second rotating plate is attached to a top surface of said second fixed plate.

### Claim 10 (depends on 9)

The apparatus according to claim 9, wherein said first rotating plate and said first fixed plate define first turret plates and wherein said second rotating plate and said second fixed plate define second turret plates.

### Claim 11 (depends on 9)

The apparatus according to claim 9, wherein said first rotating plate and said first fixed plate define a first thrust bearing and wherein said second rotating plate and said second fixed plate define a second thrust bearing.

### Claim 12 (depends on 1)

The apparatus according to claim 1, wherein
said first telescoping horizontal arm further comprises:
a first fixed member,
a first telescoping member telescopically connected to said first fixed member, wherein said first telescoping member is extendable and retractable in relation to said first fixed member, and
a first actuating member connected to said first telescoping member, wherein said first actuating member forces extension and retraction of said first telescoping member; and
said second telescoping horizontal arm further comprises:
a second fixed member,
a second telescoping member telescopically connected to said second fixed member, wherein said second telescoping member is extendable and retractable in relation to said second fixed member, and
a second actuating member connected to said second telescoping member, wherein said second actuating member forces extension and retraction of said second telescoping member.

### Claim 13 (depends on 12)

The apparatus according to claim 12, further including a hydraulic system for operating said first crane member and said second crane member, said hydraulic system comprising:
a main valve body;
a first hydraulic motor in fluid communication with said main valve body, said first hydraulic motor being arranged and configured for causing rotation of said first crane member;
a second hydraulic motor in fluid communication with said main valve body, said second hydraulic motor being arranged and configured for causing rotation of said second crane member;
a first hydraulic cylinder in fluid communication with said main valve body, said first hydraulic cylinder defining said first actuating arm being arranged and configured for causing vertical movement of said second end of said first telescoping horizontal arm;
a second hydraulic cylinder in fluid communication with said main valve body, said second hydraulic cylinder defining said first actuating member being arranged and configured for causing extension and retraction of said first telescoping member;
a third hydraulic cylinder in fluid communication with said main valve body, said third hydraulic cylinder defining said second actuating arm being arranged and configured for causing vertical movement of said second end of said second telescoping horizontal arm; and
a fourth hydraulic cylinder in fluid communication with said main valve body, said fourth hydraulic cylinder defining said second actuating member being arranged and configured for causing extension and retraction of said second telescoping member.

### Claim 14 (depends on 13)

The apparatus according to claim 13, further comprising a handheld control for actuating said main valve body.

### Claim 15 (depends on 14)

The apparatus according to claim 14, wherein said handheld control further comprises:
a first switch for communicating with said main valve body by sending signals from said first switch to said main valve body, wherein actuation of said first switch causes vertical movement of said second end of said telescoping horizontal arm;
a second switch for communicating with said main valve body by sending signals from said second switch to said main valve body, wherein actuation of said second switch causes horizontal movement of said telescoping member of said telescoping horizontal arm; and
a third switch for communicating with said main valve body by sending signals from said third switch to said main valve body, wherein actuation of said third switch causes rotation of said crane member.

### Claim 16 (depends on 1)

The apparatus according to claim 1, wherein
said second end of said first telescoping horizontal arm further includes a first fastener attached thereto, said first fastener being configured for attachment of a first lifting member for lifting items by said first crane member; and
said second end of said second telescoping horizontal arm further includes a second fastener attached thereto, said second fastener being configured for attachment of a second lifting member for lifting items by said second crane member.

### Claim 17 (depends on 1)

The apparatus according to claim 1, further comprising:
a first locking arm having a first end and a second end, said first end being attached to a first attachment point affixed to said first mounting structure, and said second end being releasably attachable to a second attachment point affixed to said first crane member, wherein said first locking arm is configured to prevent rotation of said first crane member when said first locking arm is attached to said second attachment point; and
a second locking arm having a first end and a second end, said first end being attached to a third attachment point affixed to said second mounting structure, and said second end being releasably attachable to a fourth attachment point affixed to said second crane member, wherein said second locking arm is configured to prevent rotation of said second crane member when said second locking arm is attached to said fourth attachment point.

### Claim 18 (depends on 1)

The apparatus according to claim 1, further comprising:
an air compressor system attached to said support frame, wherein said air compressor system includes:
an air compressor unit connected to a driving motor,
an air tank connected to said air compressor unit, and
an air hose connected to said air tank, wherein said air hose is configured for attachment of air powered devices.

### Claim 19 (depends on 1)

The apparatus according to claim 1, further comprising:
a first limit switch for limiting the degree of clockwise rotation of said first crane member;
a second limit switch for limiting the degree of counterclockwise rotation of said first crane member;
a third limit switch for limiting the degree of clockwise rotation of said second crane member; and
a fourth limit switch for limiting the degree of counterclockwise rotation of said second crane member.

### Claim 20 (depends on 1)

The apparatus according to claim 1, wherein said first vertical arm comprises a first rotating shaft and said second vertical arm comprises a second rotating shaft.

### Claim 21 (depends on 20)

The apparatus according to claim 20, further comprising:
a first bearing member, wherein said first bearing member is attached to said second end of said first rotating vertical arm;
a second bearing member, wherein said first rotating vertical arm extends through said second bearing member;
a third bearing member, wherein said first rotating vertical arm extends through said third bearing member;
a first drive motor connected to said first end of said first rotating vertical arm, wherein said first drive motor produces a rotational force causing rotation of said first vertical arm; and
a fourth bearing member, wherein said fourth bearing member is attached to said second end of said second rotating vertical arm;
a fifth bearing member, wherein said second rotating vertical arm extends through said fifth bearing member;
a sixth bearing member, wherein said second rotating vertical arm extends through said sixth bearing member; and
a second drive motor connected to said first end of said second rotating vertical arm, wherein said second drive motor produces a rotational force causing rotation of said second vertical arm.

### Claim 22 (depends on 20)

The apparatus according to claim 20, further comprising:
first bracing arms, wherein said first bracing arms are attached to said support frame and are connected to said first rotating vertical arm for supporting said first crane member; and
second bracing arms, wherein said second bracing arms are attached to said support frame and are connected to said second rotating vertical arm for supporting said second crane member.

### Claim 23 (depends on 20)

The apparatus according to claim 20, wherein
said first end of said first actuating arm is attached to a first attachment member affixed to said first rotating vertical arm;
said second end of said first actuating arm is attached to a second attachment member affixed to said first telescoping horizontal arm;
said first end of said second actuating arm is attached to a third attachment member affixed to said second rotating vertical arm; and
said second end of said second actuating arm is attached to a fourth attachment member affixed to said second telescoping horizontal arm.

### Claim 24 (depends on 7)

The apparatus according to claim 7, wherein said apparatus is used for a method of changing a flat tire on a mobile irrigation system, said method comprising the following steps:
attaching said one or more attachment members to said mobile carrying unit;
lifting said apparatus off the ground surface using said mobile carrying unit;
transporting said apparatus to said mobile irrigation system;
positioning said apparatus near said flat tire;
using said mobile carrying unit to lower said apparatus towards the ground surface until said one or more legs touch the ground surface;
attaching a first lifting member to the second end of the first telescoping horizontal arm;
securing said first lifting member around a frame of the mobile irrigation system near the flat tire;
moving said first telescoping horizontal arm in an upwards direction to raise the tire off the ground surface;
attaching a second lifting member to the second end of said second telescoping horizontal arm;
rotating the second crane member so that the attached second lifting member is positioned near the flat tire;
attaching the second lifting member to the flat tire;
unbolting and removing the flat tire from the mobile irrigation system;
using the second crane member to maneuver the attached flat tire onto a carrying area of the apparatus;
detaching the flat tire from the second lifting member;
attaching a replacement tire to the second lifting member;
using the second crane member to maneuver the attached replacement tire towards the mobile irrigation device;
positioning the replacement tire for attachment to the mobile irrigation system;
bolting the replacement tire to the mobile irrigation system;
detaching the second lifting member from the replacement tire;
moving said first crane member in a downwards direction to lower the attached mobile irrigation system to the ground surface; and
detaching the first lifting member from the frame of the mobile irrigation system.

### Claim 25 (depends on 1)

The apparatus according to claim 1, wherein said one or more legs stand upon the ground surface and remain detached from the ground surface.

### Claim 26 (depends on 1)

The apparatus according to claim 1, wherein said first mounting structure houses a first drive motor for operating said first crane member and said second mounting structure houses a second drive motor for operating said second crane member.

### Claim 27

A dual crane apparatus, comprising:
a support frame including:
a first mounting structure;
a second mounting structure connected to said first mounting structure via a base; and
a carrying area positioned between said first mounting structure and said second mounting structure;
wherein said first mounting structure, said second mounting structure, and said carrying area share said base, said base forming the bottom surface of said support frame;
one or more legs attached to said base, wherein said one or more legs support said base above a ground surface;
a first rotating crane member mounted to said first mounting structure, wherein said first crane member comprises:
a first vertical arm having a first end and a second end,
a first telescoping horizontal arm having a first end and a second end, said first end being articulately coupled to said second end of said first vertical arm, and
a first actuating arm having a first end and a second end, said second end being attached to said first telescoping horizontal arm, wherein said first actuating arm is arranged and configured to move said second end of said first telescoping horizontal arm up and down; and
a second rotating crane member mounted to said second mounting structure, wherein said second crane member comprises:
a second vertical arm having a first end and a second end,
a second telescoping horizontal arm having a first end and a second end, said first end being articulately coupled to said second end of said second vertical arm, and
a second actuating arm having a first end and a second end, said second end being attached to said second telescoping horizontal arm, wherein said second actuating arm is arranged and configured to move said second end of said second telescoping horizontal arm up and down; said first and second rotating crane members are able to rotate relative each other.

### Claim 28 (depends on 27)

The apparatus according to claim 27, wherein said one or more legs further comprise one or more feet members fastened to said one or more legs, wherein said one or more feet members are fastened to said one or more legs in a manner which allows said one or more feet members to be partially unfastened from said one or more legs to allow said feet members to swivel at least ninety degrees such that said one or more feet members are perpendicular to said one or more legs.

### Claim 29 (depends on 27)

The apparatus according to claim 27, wherein said carrying area is arranged and configured to carry a tire of a mobile irrigation system.

### Claim 30

A dual crane apparatus, comprising:
a portable support frame including a first mounting structure and a second mounting structure;
a base connecting said first mounting structure to said second mounting structure, said base forming the bottom surface of said support frame, said base forming the bottom surface of said first mounting structure, and said base forming the bottom surface of said second mounting structure;
one or more legs attached to said base, wherein said one or more legs hold up said support frame and said base above a ground surface;
a first rotating crane member mounted to said first mounting structure, wherein said first crane member comprises:
a first vertical arm having a first end and a second end,
a first telescoping horizontal arm having a first end and a second end, said first end being articulately coupled to said second end of said first vertical arm, and
a first actuating arm having a first end and a second end, said second end being attached to said first telescoping horizontal arm, wherein said first actuating arm is arranged and configured to move said second end of said first telescoping horizontal arm up and down; and
a second rotating crane member mounted to said second mounting structure, wherein said second crane member comprises:
a second vertical arm having a first end and a second end,
a second telescoping horizontal arm having a first end and a second end, said first end being articulately coupled to said second end of said second vertical arm, and
a second actuating arm having a first end and a second end, said second end being attached to said second telescoping horizontal arm, wherein said second actuating arm is arranged and configured to move said second end of said second telescoping horizontal arm up and down; said first and second rotating crane members are able to rotate relative each other.

### Claim 31 (depends on 30)

The apparatus according to claim 30, wherein said one or more legs further comprise one or more feet members fastened to said one or more legs, wherein said one or more feet members are fastened to said one or more legs in a manner which allows said one or more feet members to be partially unfastened from said one or more legs to allow said feet members to swivel at least ninety degrees such that said one or more feet members are perpendicular to said one or more legs.