Vacuum based lifter device for displacement of an article

• US 6,024,529 A
• Filed: 03/31/1998
• Issued: 02/15/2000
• Est. Priority Date: 10/11/1995
• Status: Expired due to Fees

• Current Assignee: Hegna LIFT As
• Original Assignee: Hegna LIFT As
• Inventors: Kristensen, Axel
• Primary Examiner(s): Bucci, David A.
• Application Number:
  US09/051,037
• Time in Patent Office: 686 Days
• Field of Search: 414/607, 414/619, 414/620, 414/627, 414/420, 414/421, 414/425, 414/422, 294/65, 294/86.41, 294/64.1
• US Class Current: 414/607
• CPC Class Codes: B66F 9/181 by suction means

Abstract

A vacuum based lifter device is provided for displacement of an article. At least one suction plate or suction cup is designed for connection to and disconnection from a vacuum source. The suction plate or suction cup is secured to equipment in order to be able to move it together with or relative to the article which is to be displaced. The device has a pallet-like structure into which fork members mounted on a fork-lift truck can be inserted. Parts of the structure define a vacuum chamber, a vacuum source having an electrically driven vacuum pump provided on the pallet-like structure and pneumatically connected to the vacuum chamber, and a mechanically or electrically controllable stop and release valve. The release valve is pneumatically coupled between the vacuum chamber and the suction plate or suction cup.

Claims

1. A vacuum based lifter device for displacing an article, wherein at least one suction plate or suction cup is designed to be connected to and disconnected from a vacuum source, and wherein the suction plate or suction cup is secured to equipment in order to be able to move it together with or relative to said article which is to be displaced, comprising:

a pallet-like structure into which there can be inserted fork members which are mounted on a working unit, and wherein parts of the structure define a vacuum chamber;

a vacuum source having an electrically driven vacuum pump provided on the pallet-like structure and pneumatically connected to the vacuum chamber, and

a mechanically or electrically controllable stop and release valve which is pneumatically coupled between the vacuum chamber and said suction plate or suction cup.

2. A device as disclosed in claim 1, wherein:

the pallet-like structure has first and second tubular members into which the fork members of said working unit can be inserted, third and fourth tubular members connecting respective, adjacent ends of said first and second tubular members, and a fifth tubular member which pneumatically connects said third and fourth tubular members,

the vacuum chamber of the vacuum source is defined by said third, fourth and fifth tubular members and is pneumatically connected to the vacuum pump, and

a power supply for a motor of the vacuum pump is provided in the form of an accumulator on said structure.

3. A device as disclosed in claim 1, wherein:

the pallet-like structure has first and second tubular members into which the fork members of said working unit can be inserted, third and fourth tubular members connecting respective, adjacent ends of said first and second tubular members, and a fifth tubular member which pneumatically connects said third and fourth tubular members,

the vacuum chamber of the vacuum source is defined by said third, fourth and fifth tubular members and is pneumatically connected to the vacuum pump, and

a power supply for a motor of the vacuum pump is provided by cable connection to the working unit.

4. A device as disclosed in claim 1, further comprising means provided on the pallet-like structure for controlling the operation of a motor for said vacuum pump.

5. A device as disclosed in claim 1, further comprising means provided on the pallet-like structure for controlling said valve.

6. A device as disclosed in claim 1, further comprising:

a hand-operated control device for controlling at least one of said vacuum pump and said valve, and

at least one of an electric cable and a wireless communication path for connecting said hand-operated control device to electric or electronic control equipment provided on said pallet like structure.

7. A device as disclosed in claim 6, wherein a wireless communication path is provided using at least one of radio signals and infrared signals.

8. A vacuum based lifter device for displacing an article wherein:

at least one suction plate or suction cup is provided for connection to and disconnection from a vacuum source;

the suction plate or suction cup is secured to equipment in order to be able to move it together with or relative to said article which is to be displaced;

the equipment is secured to a support structure which can be introduced onto fork members that are mounted on a working unit;

the support structure has a pallet-like design;

parts of the structure define a vacuum chamber;

a vacuum source having an electrically driven pump is provided on the pallet-like structure and is pneumatically connected to said vacuum chamber; and

a mechanically or electrically controllable stop and release valve is pneumatically coupled between the vacuum chamber and said suction plate or suction cup.

9. A device as disclosed in claim 8 wherein:

the pallet-like structure has first and second tubular members into which the fork members of said working unit can be inserted, third and fourth tubular members connecting respective, adjacent ends of said first and second tubular members, and a fifth tubular member which pneumatically connects said third and fourth tubular members,

the vacuum chamber of said vacuum source is defined by said third, fourth and fifth tubular members and is pneumatically connected to the vacuum pump, and

a power supply for a motor of the vacuum pump is provided in the form of an accumulator on said structure.

10. A device as disclosed in claim 8 wherein:

the pallet-like structure has first and second tubular members into which the fork members of said working unit can be inserted, third and fourth tubular members connecting respective, adjacent ends of said first and second tubular members, and a fifth tubular member which pneumatically connects said third and fourth tubular members,

the vacuum chamber of said vacuum source is defined by said third, fourth and fifth tubular members and is pneumatically connected to the vacuum pump, and

a power supply for a motor of the vacuum pump is provided by cable connection to the working unit.

11. A device as disclosed in claim 8, further comprising means provided on the pallet-like structure for controlling the operation of a motor for said vacuum pump.

12. A device as disclosed in claim 8, further comprising means provided on the pallet-like structure for controlling said valve.

13. A device as disclosed in claim 8, further comprising:

a hand-operated control device for controlling at least one of said vacuum pump and said valve, and

at least one of an electric cable and a wireless communication path for connecting said hand-operated control device to electric or electronic control equipment provided on said pallet like structure.

14. A device as disclosed in claim 13, wherein a wireless communication path is provided using at least one of radio signals and infrared signals.