US4187577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blower attachment for line trimmer
Assignee: Individual
•
Filing: 1978-08-23
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Granted: 1980-02-12
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Expires: 1998-08-23
Abstract
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.
Inventors
- 👤 Lee A. Hansen
- 👤 William A. Conrad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:54
CPC Classifications
A; A01; A01D; A01D42/00; A01D42/06; A01G; A01G20/00; A01G20/40; A01G20/43; A01G20/47; A01D2101/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/49329; Y10T29/49716
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
130 words
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.
Claim 2
Dependent Claim
130 words
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.
Claim 3
Dependent Claim
22 words
The apparatus of claim 1 wherein said attachment means includes at least one stretchable cord having means for connection to said housing.
Claim 4
Dependent Claim
50 words
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.
Claim 5
Dependent Claim
138 words
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.
Claim 6
Dependent Claim
138 words
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.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-02-11 | 1983-08-13 | 1984-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-02-11 | 1987-08-13 | 1988-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-02-11 | 1991-08-13 | 1992-02-12 | $7700.00 | Window Closed / Lapsed |