Vacuum and hose retraction system
AssigneeM.D. Manufacturing, Inc.
InventorGrant Olewiler
Life of this patent
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Abstract
The present invention provides unique portable or stationary hose retraction systems in a single compact unit having an elongated hose, a chamber or plenum for storing the hose, a primary vacuum source for creating suction in the hose, and a secondary vacuum source for retracting the hose into the chamber. Embodiments may include one or more switches located at a distal end of the hose for controlling the primary and secondary vacuum sources. Other embodiments include a movable robotic unit with a proximity generating signal at the distal end of the hose, whereby the robotic unit may withdraw the hose as needed during use, and the secondary vacuum source may retract slack in the hose during use, or may retract the entire hose and the robotic unit after use.
Claims12
A vacuum unit comprising:
- a) a housing;
- b) a first chamber in said housing having a first suction source therein for removing air from an adjacent debris collection chamber;
- c) a second chamber in said housing separated from said first chamber and from said debris collection chamber, said second chamber having a second suction source therein for removing air from an adjacent third chamber in said housing, said third chamber being separated from said first chamber and from said debris collection chamber;
- d) a port in said third chamber for communication between an interior and exterior of said third chamber;
- e) an elongated vacuum hose provided in said third chamber wherein a first end of said hose extends through a sealed coupling into said debris collection chamber and is sealingly attached to a side or bottom of a debris collection bag, such that suction from said first suction source is transmitted through said bag to said hose, said hose being movably extendable through said port;
- f) an opening between said third chamber and said second chamber such that suction from said second chamber is transmitted into said third chamber for retracting said hose into said third chamber;
- g) a deflector attached inside said third chamber adjacent to said port for deflecting said hose into said third chamber during retraction;
- and
- h) at least one switch at an opposite end of said hose for electronically controlling said first and second suction sources.
A method of using a hose retraction apparatus, the method comprising the steps of:
- providing the hose retraction apparatus comprising:
- a hose chamber for storing a hose, said hose chamber comprising a hose outlet port and a deflector inside said hose chamber adjacent to said outlet port for deflecting said hose into said hose chamber during retraction;
- the hose traversing said hose outlet port, said hose having a proximal end and a distal end, said distal end comprising a switch operable to control a primary vacuum source and a secondary vacuum source;
- said primary vacuum source being provided in a separate first chamber adjacent to a debris collection chamber for removing air from said debris collection chamber;
- said primary vacuum source being in fluid communication with said proximal end of said hose for creating a partial vacuum in said hose;
- said proximal end being sealingly attached to a side or bottom of a debris collection bag in said debris collection chamber;
- said secondary vacuum source being provided in a separate second chamber adjacent to said hose chamber for removing air from said hose chamber;
- and said secondary vacuum source being in fluid communication with said hose chamber for creating a partial vacuum therein, wherein said hose may be drawn into said hose chamber by engaging said secondary vacuum source to create a suction force inside said hose chamber;
- engaging said primary vacuum source via said switch to perform a vacuuming session;
- and
- engaging said secondary vacuum source via said switch to create said partial vacuum in said hose chamber and draw said hose into said hose chamber.
Dependencies are inferred from the claim text.