US4227280A — Vacuum/blower attachment for filament trimmer

Claim 1

Independent Claim 295 words

An attachment for use with a filament line trimmer which has a shaft and means for rotatably driving the shaft, the shaft further having means thereon for normally securing a filament line spool thereto, comprising: (a) a fan member having a central axis and at least one blade member disposed about said axis, said fan member further having means thereon cooperating with the securing means on the shaft for removably mounting said fan member to the shaft with said central axis aligned with the rotational axis of the shaft; and (b) a housing removably attached to said trimmer and defining an enclosed air chamber in which said fan member is disposed, said housing having an air inlet and an air outlet opening whereby, upon rotation of said fan, air is drawn into said housing through said inlet and discharged from said housing through said outlet, said housing including: (i) a generally cylindrical central portion defining an enclosed air chamber in which said fan member is disposed; (ii) a scoop portion defining said air inlet opening, said scoop portion disposed peripherally with respect to said central portion and opening into said enclosed air chamber; and (iii) a discharge chute portion extending from said central portion and opening into said enclosed air chamber, said discharge chute portion further defining said air discharge outlet; and wherein said housing may be attached to said trimmer in a first position corresponding to a vacuum mode of operation with said inlet scoop extending forwardly and said discharge chute extending rearwardly with respect to said trimmer, and wherein said housing may be attached in a second position corresponding to a blower mode of operation with said discharge chute extending forwardly and said air scoop portion extending rearwardly with respect to the trimmer.

Claim 2

Dependent Claim 295 words

An attachment for use with a filament line trimmer which has a shaft and means for rotatably driving the shaft, the shaft further having means thereon for normally securing a filament line spool thereto, comprising: (a) a fan member having a central axis and at least one blade member disposed about said axis, said fan member further having means thereon cooperating with the securing means on the shaft for removably mounting said fan member to the shaft with said central axis aligned with the rotational axis of the shaft; and (b) a housing removably attached to said trimmer and defining an enclosed air chamber in which said fan member is disposed, said housing having an air inlet and an air outlet opening whereby, upon rotation of said fan, air is drawn into said housing through said inlet and discharged from said housing through said outlet, said housing including: (i) a generally cylindrical central portion defining an enclosed air chamber in which said fan member is disposed; (ii) a scoop portion defining said air inlet opening, said scoop portion disposed peripherally with respect to said central portion and opening into said enclosed air chamber; and (iii) a discharge chute portion extending from said central portion and opening into said enclosed air chamber, said discharge chute portion further defining said air discharge outlet; and wherein said housing may be attached to said trimmer in a first position corresponding to a vacuum mode of operation with said inlet scoop extending forwardly and said discharge chute extending rearwardly with respect to said trimmer, and wherein said housing may be attached in a second position corresponding to a blower mode of operation with said discharge chute extending forwardly and said air scoop portion extending rearwardly with respect to the trimmer.

Claim 3

Dependent Claim 234 words

A vacuum/blower apparatus adapted for collection or removal of grass clippings or other debris, comprising: (a) a first housing, said housing having means connected thereto for supporting said housing in close proximity to the ground surface; (b) a second housing removably attached to said first housing in first and second positions corresponding to vacuum and blower modes of operation, respectively, said second housing having an inlet air scoop and an outlet air discharge chute, and said second housing comprising a central portion that is generally cylindrical in shape and which defines an air chamber in which said fan means is disposed, said inlet air scoop and said air discharge chute spaced apart circumferentially about said central portion of said second housing such that in said first position said air scoop extends forwardly with respect to said first housing while said discharge chute extends generally rearwardly with respect to said first housing while in said second position said air discharge chute extends forwardly with respect to said first housing while said inlet air scoop extends generally rearwardly with respect to said first housing; (c) fan means disposed within said second housing for drawing air into said second housing through said inlet scoop and discharging air through said discharge chute; (d) means for rotatably driving said fan, said driving means mounted within said first housing; and (e) means for securing said fan to said driving means.

Claim 4

Dependent Claim 234 words

A vacuum/blower apparatus adapted for collection or removal of grass clippings or other debris, comprising: (a) a first housing, said housing having means connected thereto for supporting said housing in close proximity to the ground surface; (b) a second housing removably attached to said first housing in first and second positions corresponding to vacuum and blower modes of operation, respectively, said second housing having an inlet air scoop and an outlet air discharge chute, and said second housing comprising a central portion that is generally cylindrical in shape and which defines an air chamber in which said fan means is disposed, said inlet air scoop and said air discharge chute spaced apart circumferentially about said central portion of said second housing such that in said first position said air scoop extends forwardly with respect to said first housing while said discharge chute extends generally rearwardly with respect to said first housing while in said second position said air discharge chute extends forwardly with respect to said first housing while said inlet air scoop extends generally rearwardly with respect to said first housing; (c) fan means disposed within said second housing for drawing air into said second housing through said inlet scoop and discharging air through said discharge chute; (d) means for rotatably driving said fan, said driving means mounted within said first housing; and (e) means for securing said fan to said driving means.

Claim 5

Dependent Claim 37 words

A vacuum/blower apparatus in accordance with claim 2 wherein said air discharge chute defines an air discharge passageway disposed generally tangentially with respect to said enclosed air chamber defined by said central portion of said second housing.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1983-10-14	1984-04-14	1984-10-14	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1987-10-14	1988-04-14	1988-10-14	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1991-10-14	1992-04-14	1992-10-14	$7700.00	Window Closed / Lapsed

Vacuum/blower attachment for filament trimmer

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