Blower attachment for line trimmer

• US 4,187,577 A
• Filed: 08/23/1978
• Issued: 02/12/1980
• Est. Priority Date: 08/23/1978
• Status: Expired due to Term

• Current Assignee: Lee A. Hansen, William A. Conrad
• Original Assignee: Lee A. Hansen, William A. Conrad
• Inventors: Conrad, William A., Hansen, Lee A.
• Primary Examiner(s): Moore, Christopher K.
• Application Number:
  US05/936,182
• Time in Patent Office: 538 Days
• Field of Search: 15/328, 15/405, 15/406, 15/338, 30/122, 29/156.4 R, 29/401 B
• US Class Current: 15/328
• CPC Class Codes: A01D 2101/00 Lawn-mowers
• CPC Class Codes: A01D 42/06 Sweeping or cleaning lawns or other surfaces sweeping apparatus for lawns per se A01G20/43
• CPC Class Codes: A01G 20/47 Vacuum or blower devices
• CPC Class Codes: Y10T 29/49329 Centrifugal blower or fan
• CPC Class Codes: Y10T 29/49716 Converting

Abstract

The device includes a blower impeller, a blower housing conformed to fit snugly over the bottom of a standard line trimmer, and stretch traps for maintaining the housing in position on the line trimmer. The device enables one to convert a line trimmer to a blower arrangement by the removal of the spool and head of the line trimmer and the attachment of the impeller, housing and straps in their place.

Claims

1. An attachment apparatus for converting a portable hand held power apparatus having a head and drive shaft into a blower, comprising:

an impeller;

a housing for enclosing said impeller and a portion of the head, said housing comprising an impeller chamber surrounding said impeller, an intake port having a first vertically disposed portion opening to the surrounding atmosphere at its uppermost end and leading to a second intake portion at its lower end, said second portion having a covered bottom and covered sides and including a top having an aperture leading to said impeller chamber; and

an outlet port connected to said impeller chamber and extending laterally from said impeller chamber in a substantially coplanar relation thereto and an attachment means for maintaining the housing in position upon the head.

2. The apparatus of claim 1 wherein said attachment means includes at least one stretchable cord having means for connection to said housing.

3. The apparatus of claim 2 wherein the impeller includes a plurality of impeller blades for moving air through the intake and outlet ports and a plurality of radially extending secondary blade means disposed above the impeller blades for providing air motion to inhibit debris from becoming tangled with the shaft.

4. An attachment apparatus for converting a line trimmer having a head and drive shaft into a blower comprising:

an impeller;

a housing for enclosing said impeller and a portion of the line trimmer head; and

a flexible attachment means for maintaining the housing in position upon the line trimmer head, said housing comprising an intake port having one portion thereof extending vertically, an impeller chamber disposed in surmounting relation to a second portion of said intake port and an outlet port disposed in coplaner relation to said impeller chamber, and further wherein the impeller includes a plurality of impeller blades for moving air through the intake and outlet ports and a plurality of radially extending secondary blade means disposed above the impeller blades for providing air motion to inhibit debris from becoming entangled with the line trimmer shaft.