Patent US4242794A successfully refreshed from Google Patents.
US4242794A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Universal blower attachment unit
Assignee: Individual
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Filing: 1979-02-27
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Granted: 1981-01-06
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Expires: 1999-02-27
Abstract
Abstract A universal blower unit is provided which may be directly attached to any of the most widely distributed flexible line type grass or weed trimming tools, known as "Line-Trimmers" and sold under various designations including under the trademark "WEED EATER". The blower unit is secured to the motor housing following removal of the unit which normally holds the line employed in the line trimming operation. In securing the blower unit in place, a series of spacing studs are employed to orient and prevent lateral movement of the blower unit, and spring clamps extend up over the housing to hold the blower unit onto the motor housing and to hold the impeller in driving engagement with the output drive shaft from the motor. A small supplemental impeller is located adjacent the motor for cooling purposes. The blower unit is spaced downwardly from the motor housing and air is drawn in through the space between the blower and the motor housings. A nozzle is provided to direct a jet of air forward from the blower apparatus to sweep sidewalks or other paved or unpaved surfaces free from clippings and the like.
Inventors
- 👤 Clayton R. Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:01
CPC Classifications
E; E01; E01H; E01H1/00; E01H1/08; E01H1/0809
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
146 words
A blower attachment for a line trimmer including a trimmer housing and drive shaft; said attachment comprising: a blower housing having an air inlet and an air outlet said blower housing being secured in a position spaced from said trimmer housing, and said inlet being disposed between said blower housing and said trimmer housing; an impeller mounted for rotation in said blower housing and having means coupling said impeller to said drive shaft for moving air from said inlet to and out of said outlet, said impeller including a shaft extending out of said blower housing toward said trimmer, said shaft carrying a second impeller outside of said blower housing for providing cooling air to said trimmer; and means for releasably securing said blower housing to said trimmer housing in a position placing said receiving means on said impeller in operative connection with said drive shaft.
Claim 2
Dependent Claim
146 words
A blower attachment for a line trimmer including a trimmer housing and drive shaft; said attachment comprising: a blower housing having an air inlet and an air outlet said blower housing being secured in a position spaced from said trimmer housing, and said inlet being disposed between said blower housing and said trimmer housing; an impeller mounted for rotation in said blower housing and having means coupling said impeller to said drive shaft for moving air from said inlet to and out of said outlet, said impeller including a shaft extending out of said blower housing toward said trimmer, said shaft carrying a second impeller outside of said blower housing for providing cooling air to said trimmer; and means for releasably securing said blower housing to said trimmer housing in a position placing said receiving means on said impeller in operative connection with said drive shaft.
Claim 3
Dependent Claim
139 words
A blower attachment for a line trimmer including a trimmer housing having an outwardly extending flange at the lower edge thereof, and a drive shaft; said attachment comprising: a blower housing having an air inlet and an air outlet; an impeller mounted for rotation in said blower housing and having means coupling said impeller to said drive shaft for moving air from said inlet to and out of said outlet; and means for releasably securing said blower housing to said trimmer housing in a position placing said receiving means on said impeller in operative connection with said drive shaft, said means for releasably securing said blower housing to said trimmer housing including at least one spring clamp on said blower housing, said spring clamp being arranged to releasably grip said flange between said blower housing and said spring clamp.
Claim 4
Dependent Claim
139 words
A blower attachment for a line trimmer including a trimmer housing having an outwardly extending flange at the lower edge thereof, and a drive shaft; said attachment comprising: a blower housing having an air inlet and an air outlet; an impeller mounted for rotation in said blower housing and having means coupling said impeller to said drive shaft for moving air from said inlet to and out of said outlet; and means for releasably securing said blower housing to said trimmer housing in a position placing said receiving means on said impeller in operative connection with said drive shaft, said means for releasably securing said blower housing to said trimmer housing including at least one spring clamp on said blower housing, said spring clamp being arranged to releasably grip said flange between said blower housing and said spring clamp.
Claim 5
Dependent Claim
34 words
A blower attachment as set forth in claim 2 wherein a pair of said spring clamps are arranged on said blower housing for releasably securing a plurality of different configurations of trimmer housing flanges.
Claim 6
Dependent Claim
86 words
A blower attachment for securing to a line trimmer housing; said trimmer comprising: an impeller; a blower housing enclosing said impeller and having a nozzle extending from said blower housing; means for supplying air to said blower housing from above said blower housing; means for quickly detaching and securing said blower housing to said trimmer housing; and means for mounting said impeller for driving engagement with a motor of said line trimmer and for rotation within said blower housing to blow air out through said nozzle.
Claim 7
Dependent Claim
86 words
A blower attachment for securing to a line trimmer housing; said trimmer comprising: an impeller; a blower housing enclosing said impeller and having a nozzle extending from said blower housing; means for supplying air to said blower housing from above said blower housing; means for quickly detaching and securing said blower housing to said trimmer housing; and means for mounting said impeller for driving engagement with a motor of said line trimmer and for rotation within said blower housing to blow air out through said nozzle.
Claim 8
Dependent Claim
17 words
A blower attachment as defined in claim 4 wherein said quick detaching means includes resilient clamping means.
Claim 9
Dependent Claim
20 words
A blowing attachment as defined in claim 5 wherein said resilient clamping means includes at least one metal spring clamp.
Claim 10
Dependent Claim
82 words
A line trimmer and blower attachment assembly comprising: a line trimmer unit including a handle, a motor, and a motor housing with the rotating line holder removed; an impeller unit having a series of radially extending blades; a blower housing enclosing said impeller unit, said blower housing including a nozzle; means for firmly securing said blower housing to said motor housing; and means for mounting said impeller unit for rotational driving engagement with said motor to blow air out through said nozzle.
Claim 11
Dependent Claim
82 words
A line trimmer and blower attachment assembly comprising: a line trimmer unit including a handle, a motor, and a motor housing with the rotating line holder removed; an impeller unit having a series of radially extending blades; a blower housing enclosing said impeller unit, said blower housing including a nozzle; means for firmly securing said blower housing to said motor housing; and means for mounting said impeller unit for rotational driving engagement with said motor to blow air out through said nozzle.
Claim 12
Dependent Claim
15 words
An assembly as defined in claim 7 wherein said securing means includes resilient clamping means.
Claim 13
Dependent Claim
19 words
An assembly as defined in claim 8 wherein said resilient clamping means includes at least one metal spring clamp.
Claim 14
Dependent Claim
23 words
An assembly as defined in claim 7 wherein said securing means includes a plurality of spacing studs and at least two spring clamps.
Claim 15
Dependent Claim
137 words
A blower attachment for securing to the motor housing flange of a line trimmer comprising: an impeller; a blower housing enclosing said impeller, said blower housing having a nozzle extending outwardly therefrom; an inlet means for supplying air to said blower housing, said air inlet means having an inlet opening above said blower housing; means secured to said blower housing for engaging the lower edge and the sides of said motor housing flange to prevent lateral movement of said blower housing with respect to said motor housing flange; means for applying mechanical force between said blower housing and said motor housing flange for holding them firmly together; and means for mounting said impeller for driving engagement with a motor of said line trimmer, and for rotation within said blower housing to blow air out through said nozzle.
Claim 16
Dependent Claim
137 words
A blower attachment for securing to the motor housing flange of a line trimmer comprising: an impeller; a blower housing enclosing said impeller, said blower housing having a nozzle extending outwardly therefrom; an inlet means for supplying air to said blower housing, said air inlet means having an inlet opening above said blower housing; means secured to said blower housing for engaging the lower edge and the sides of said motor housing flange to prevent lateral movement of said blower housing with respect to said motor housing flange; means for applying mechanical force between said blower housing and said motor housing flange for holding them firmly together; and means for mounting said impeller for driving engagement with a motor of said line trimmer, and for rotation within said blower housing to blow air out through said nozzle.
Claim 17
Dependent Claim
40 words
A blower attachment as defined in claim 11 wherein said means for holding said blower housing and said motor housing flange together includes quick detachable means for applying a resilient force between said blower housing and said motor housing flange.
Claim 18
Dependent Claim
96 words
A universal blower attachment for line trimming apparatus comprising: a unitary blower assembly including a blower housing, a central air impeller unit, and bearing means mounting said impeller in said blower housing, said impeller unit being provided with a recess means for driving by a motor of the line trimmer; means including a plurality of studs mounted on the upper surface of said blower unit to space and locate said blower housing relative to a lower flange of a motor housing; and resilient means for clamping said blower housing to said flange of said motor housing.
Claim 19
Dependent Claim
96 words
A universal blower attachment for line trimming apparatus comprising: a unitary blower assembly including a blower housing, a central air impeller unit, and bearing means mounting said impeller in said blower housing, said impeller unit being provided with a recess means for driving by a motor of the line trimmer; means including a plurality of studs mounted on the upper surface of said blower unit to space and locate said blower housing relative to a lower flange of a motor housing; and resilient means for clamping said blower housing to said flange of said motor housing.
Claim 20
Dependent Claim
36 words
A blower attachment as defined in claim 13 wherein two spring clamps are provided, one on either side of said blower assembly, whereby a plurality of different configurations of line trimmer motor housings may be accommodated.
Claim 21
Dependent Claim
31 words
A blower attachment for line trimming as defined in claim 13 wherein said resilient clamping means includes a pair of spring clamps each being mounted on a pair of said studs.
Claim 22
Dependent Claim
97 words
A blower attachment as defined in claim 13 for line trimmers having motor housings which have a predetermined lateral dimension of the motor housing from the motor axis to the front and to the two sides, and a predetermined motor housing flange depth, wherein pairs of said studs are located at the sides of said blower assembly, and at least one of said studs is located at the front of said blower assembly, with the distance of each of said five studs from the central axis of said blower assembly being substantially equal to said lateral dimensions.
Claim 23
Dependent Claim
58 words
A blower attachment as defined in claim 16 further comprising an additional vibration damping stud mounted at the rear of said blower housing at a distance slightly greater than said lateral dimension to engage motor housings having a rearwardly extending flange while avoiding interference with line trimmers having a rear extent substantially equal to said predetermined lateral dimension.
Claim 24
Dependent Claim
93 words
A blower attachment for securing to a line trimmer housing; said attachment comprising: an impeller; a blower housing enclosing said impeller and having a nozzle extending from said blower housing; means for supplying air to said blower housing from above the level of said nozzle extending from said blower housing; means for quickly detaching and securing said blower housing to said trimmer housing; and means for mounting said impeller for driving engagement with a motor of said line trimmer and for rotation within said blower housing to blow air out through said nozzle.
Claim 25
Dependent Claim
93 words
A blower attachment for securing to a line trimmer housing; said attachment comprising: an impeller; a blower housing enclosing said impeller and having a nozzle extending from said blower housing; means for supplying air to said blower housing from above the level of said nozzle extending from said blower housing; means for quickly detaching and securing said blower housing to said trimmer housing; and means for mounting said impeller for driving engagement with a motor of said line trimmer and for rotation within said blower housing to blow air out through said nozzle.
Claim 26
Dependent Claim
84 words
A line trimmer and blower attachment assembly comprising: a line trimmer unit including a handle, a motor, and a motor housing with the rotating line holder removed; an impeller unit having a series of radially extending blades; a blower housing enclosing said impeller unit; a nozzle extending outwardly from said blower housing; means for firmly securing said blower housing to said motor housing; and means for mounting said impeller unit for rotational driving engagement with said motor to blow air out through said nozzle.
Claim 27
Dependent Claim
84 words
A line trimmer and blower attachment assembly comprising: a line trimmer unit including a handle, a motor, and a motor housing with the rotating line holder removed; an impeller unit having a series of radially extending blades; a blower housing enclosing said impeller unit; a nozzle extending outwardly from said blower housing; means for firmly securing said blower housing to said motor housing; and means for mounting said impeller unit for rotational driving engagement with said motor to blow air out through said nozzle.
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) | 1984-01-06 | 1984-07-07 | 1985-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-06 | 1988-07-07 | 1989-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-06 | 1992-07-07 | 1993-01-06 | $7700.00 | Window Closed / Lapsed |