Backpack sprayer and container for spraying agent for a backpack sprayer

Patent metadata

Field	Value
Publication number	US-9878338-B2
Application number	US-201514792013-A
Country	US
Kind code	B2
Filing date	Jul 6, 2015
Priority date	Jul 3, 2014
Publication date	Jan 30, 2018
Grant date	Jan 30, 2018

Abstract

A backpack sprayer has a carrying arrangement, on which a container for spraying agent is arranged. The container has a filling opening which can be closed by way of a lid. The carrying arrangement has a set-down position, in which the carrying arrangement is set down on a planar, horizontal set-down surface. The spraying agent region of the container is the region which is provided for spraying agent and extends as far as a maximum permissible filling height (max). The spraying agent region has a greatest horizontal inner cross-sectional area (A) in the set-down position. In order to allow simple filling of spraying agent and simple cleaning of the container, it is provided that the container can be opened at the filling opening over at least 60% of its greatest inner cross-sectional area (A).

First claim

What is claimed is:

1. A back carried spray apparatus comprising:
a container for spraying agent;
said container having a fill opening;
a cover configured to close said fill opening;
the back carried spray apparatus defining a rest position wherein the spray apparatus is placed on an even horizontal rest surface;
said container having a spray agent region extending up to a maximum allowable fill height;
said spray agent region defining a greatest horizontal inner cross-sectional area (A) in said rest position; and,
said container being configured to open over at least 60% of said greatest horizontal inner cross-sectional area (A) at said fill opening;
a seal configured to act between said cover and said container;
said seal being arranged in a receiving space defined between said cover and said container when said cover is closed;
wherein said seal is held on said cover;
said seal has an axial sealing surface; and,
said container defines a container interior and has a circumferential rim sloping down to said container interior so as to permit the spraying agent to flow off away from the region of said rim into said container interior.

2. The spray apparatus of claim 1 , wherein said container is configured to open over the entirety of said greatest horizontal inner cross-sectional area (A) at said fill opening.

3. The spray apparatus of claim 1 , wherein said fill opening has a non-circular cross-section.

4. The spray apparatus of claim 1 further comprising:
a locking arrangement configured to fix said cover on said container;
said locking arrangement having a pivotably mounted locking element and a pivotable actuating element;
said locking element being configured to effect a locking action; and,
said locking arrangement being configured to lock and to release as a result of a pivoting of said actuating element.

5. The spray apparatus of claim 4 , wherein said actuating element is pivotable relative to said locking element.

6. The spray apparatus of claim 4 , wherein:
said actuating element has a first end position wherein said locking arrangement is closed; and,
said actuating element has a second end position wherein said locking arrangement is open.

7. A back carried spray apparatus comprising:
a container for spraying agent;
said container having a fill opening;
a cover configured to close said fill opening;
the back carried spray apparatus defining a rest position wherein the spray apparatus is placed on an even horizontal rest surface;
said container having a spray agent region extending up to a maximum allowable fill height;
said spray agent region defining a greatest horizontal inner cross-sectional area (A) in said rest position;
said container being configured to open over at least 60% of said greatest horizontal inner cross-sectional area (A) at said fill opening;
a locking arrangement configured to fix said cover on said container;
said locking arrangement having a pivotably mounted locking element and a pivotable actuating element;
said locking element being configured to effect a locking action;
said locking arrangement being configured to lock and to release as a result of a pivoting of said actuating element;
said actuating element has a first end position wherein said locking arrangement is closed;
said actuating element has a second end position wherein said locking arrangement is open;
a pivotably mounted carrying handle which forms said actuating element;
said carrying handle defining a pivot path between said first end position and said second end position; and,
said carrying handle further having a carrying position lying in said pivot path between said first end position and said second end position.

8. The spray apparatus of claim 7 , wherein said carrying handle is configured to act on said locking element only after pivoting beyond said carrying position during a pivot movement along said pivot path from one of said first and second end positions to the other of said first and second end positions.

9. The spray apparatus of claim 7 , wherein:
said cover has a recess foamed therein; and,
said carrying handle lies at least partially in said recess when in said first end position.

10. The spray apparatus of claim 1 further comprising:
a pivot bearing;
said cover being pivotably mounted on said container via said pivot bearing; and,
said pivot bearing being configured to allow a translational movement of said cover perpendicular to said fill opening.

11. The spray apparatus of claim 4 , wherein:
said actuating element has a first end position wherein said locking arrangement is closed;
said actuating element has a second end position wherein said locking arrangement is open;
said fill opening defines a plane extending thereacross; and,
said locking arrangement is configured to impart a translational movement to said cover perpendicular to said plane when said actuating element is moved from said second end position to said first end position thereof.

12. The spray apparatus of claim 4 , wherein:
said seal defines a radial sealing surface configured to act between said cover and said container;
said fill opening defines a plane;
said actuating element has a first end position wherein said locking arrangement is closed;
said actuating element has a second end position wherein said locking arrangement is open;
said locking arrangement being configured to impart a translational movement to said cover perpendicular to said plane when said actuating element is moved from its second end position to its first end position; and,
said radial sealing surface being configured to come into contact engagement with said container as a result of said translational movement.

13. The spray apparatus of claim 1 , wherein:
said seal has a radial sealing surface;
said container has an outer side and a wall delimiting said receiving space to said outer side of said container; and,
said radial sealing surface is supported on said wall when said cover is closed.

14. The spray apparatus of claim 1 , wherein:
said seal has a total height (h) in an unloaded state; and,
said axial sealing surface has a width (b) of less than approximately 40% of said total height (h).

15. The spray apparatus of claim 1 , wherein:
said cover has an edge delimiting said receiving space to said container interior.

16. The spray apparatus of claim 1 , wherein:
said seal is configured as a circumferential sealing band having a height (h) of at least approximately 2 cm in an unloaded state.

17. The spray apparatus of claim 1 , wherein said seal is configured as a circumferential sealing band having a height (h) of at least approximately 3 cm in an unloaded state.

18. The spray apparatus of claim 1 further comprising:
a carrying arrangement having a back carrier; and,
a fastening arrangement formed on said container and configured to fix said container to said back carrier.

19. The spray apparatus of claim 1 , wherein said cover is an injection molded part.

20. A container for spraying agent for a back carried spray apparatus, the container comprising:
a container body having a fill opening;
a cover configured to close said fill opening;
said container body having a spray agent region for spraying agent extending up to a maximum allowable fill height (max);
said spray agent region having a greatest horizontal inner cross-section (A) in a rest position of the spray apparatus; and,
said container body being configured to open over at lea

Assignees

• Stihl Ag & Co Kg Andreas

Inventors

• Heide Klaas Maximilian
• Wiedmann Hans-Georg
• Langhans Klaus

Classifications

• A01M7/0021

  motor-driven · CPC title

• A01M9/0046

  motor-driven · CPC title

• A01M9/0084

  Undercarriages, frames, couplings, tanks · CPC title

• B05B7/2475 Primary

  comprising a container carried on the back of the user · CPC title

• A01M7/0085

  Tanks · CPC title