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US4600129A
Expired / Lapsed
US
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Chemicals spreader
Assignee: Komatsu Zenoah Co
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Filing: 1984-01-30
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Granted: 1986-07-15
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Expires: 2004-01-30
Abstract
Abstract A chemicals spreader to be carried on the back of an operator has a pack board which has a plurality of grooves provided on the front side thereof for exhausting air. The air is supplied by a fan which is to make a mixture of air and chemicals. The chemicals spreader also has a horizontal frame having a plurality of holes for exhausting air toward the back of the operator.
Inventors
- 👤 Keiji Kondo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:06
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/14; B05B7/1404; B05B7/1413; A; A01; A01M; A01M7/00; A01M7/0003; A01M7/0017; B05B7/1427; B05B7/24; B05B7/2402; B05B7/2405; B05B7/2424; B05B7/2475
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
102 words
A chemicals spreader to be carried on the back of an operator comprising: a chemicals reservoir containing chemicals, a fan for blowing air, means for introducing said chemicals into the air stream caused by said fan to make a mixture thereof, means for spreading said mixture of said chemicals and said air, a pack board having a front side for abutting the back of the operator, means adjacent to said pack board for supporting said fan, and means provided in said pack board for passing and distributing part of the air stream caused by said fan onto the back of the operator.
Claim 2
Dependent Claim
102 words
A chemicals spreader to be carried on the back of an operator comprising: a chemicals reservoir containing chemicals, a fan for blowing air, means for introducing said chemicals into the air stream caused by said fan to make a mixture thereof, means for spreading said mixture of said chemicals and said air, a pack board having a front side for abutting the back of the operator, means adjacent to said pack board for supporting said fan, and means provided in said pack board for passing and distributing part of the air stream caused by said fan onto the back of the operator.
Claim 3
Dependent Claim
147 words
A chemicals spreader to be carried on the back of an operator, comprising: a fan for blowing air; means for introducing said chemicals into the air stream caused by said fan to make a mixture thereof; means for spreading said mixture of said chemicals and said air; a pack board having a front side abutting the back of the operator; frame means for supporting said fan and said pack board; means provided in said pack board so as to pass part of the air stream caused by said fan onto the back of the operator; a horizontal frame having a plurality of delivery holes for exhausting part of the air stream from said fan toward spaces between the back of the operator and the front side of said pack board; and communicating means employed between said fan and said horizontal frame for delivering air to said frame.
Claim 4
Dependent Claim
147 words
A chemicals spreader to be carried on the back of an operator, comprising: a fan for blowing air; means for introducing said chemicals into the air stream caused by said fan to make a mixture thereof; means for spreading said mixture of said chemicals and said air; a pack board having a front side abutting the back of the operator; frame means for supporting said fan and said pack board; means provided in said pack board so as to pass part of the air stream caused by said fan onto the back of the operator; a horizontal frame having a plurality of delivery holes for exhausting part of the air stream from said fan toward spaces between the back of the operator and the front side of said pack board; and communicating means employed between said fan and said horizontal frame for delivering air to said frame.
Claim 5
Dependent Claim
50 words
The spreader of claims 1 or 2 wherein said pack board comprises a support plate, a sponge adhered to the front surface of said support plate, said sponge and support plate having a plurality of corresponding openings for passing air therethrough from said fan to the back of the operator.
Claim 6
Dependent Claim
17 words
The spreader of claim 3 wherein said sponge is formed with a plurality of parallel air grooves.
Claim 7
Dependent Claim
14 words
The spreader of claim 3 further including frame means for receiving said support plate.
References Cited (Backward Citations)
DE145549C
Cited
US2958155A
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US3223286A
Cited
US3199785A
Cited
GB1139998A
Cited
US3586238A
Cited
US3567120A
Cited
DE2649067A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-07-14 | 1990-01-13 | 1990-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-14 | 1994-01-13 | 1994-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-14 | 1998-01-13 | 1998-07-15 | $7700.00 | Window Closed / Lapsed |