Patent US4720890A successfully refreshed from Google Patents.
US5195208A
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Backpack power blower apparatus
Assignee: Kioritz Corp
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Filing: 1991-12-13
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Granted: 1993-03-23
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Expires: 2011-12-13
Abstract
Abstract A backpack power blower apparatus including a frame carrying an engine and a blower. The frame is provided with a sound insulating planar member for reducing noises produced by the engine and the blower, the sound insulating planar member including opposite side portions extending rearwardly from a front portion of the frame and a rear portion extending between the opposite side portions at rear end portions thereof whereby the sound insulating planar member surrounds a machine body, including the engine and the blower, at least at opposite sides and a rear side of the machine body.
Inventors
- 👤 Hirofumi Yamami
- 👤 Yoshisato Hashimoto
- 👤 Giichi Iida
- 👤 Shunsuke Nakadate
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:34
CPC Classifications
A; A47; A47L; A47L5/00; A47L5/12; A47L5/22; A47L5/36
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
105 words
A back power blower apparatus comprising: a frame for carrying an engine, a blower and associated parts, said frame including a front portion to be carried on the back of an operator; sound insulating means for reducing noises produced by the engine and the blower, said sound insulating means having a flexible sheet including opposite side portions extending rearwardly from said front portion of the frame, and a rear portion extending between said opposite side portions whereby said sound insulating means surrounds a machine body, including the engine and the blower, at least at the opposite sides and the rear side of the machine body.
Claim 2
Dependent Claim
105 words
A back power blower apparatus comprising: a frame for carrying an engine, a blower and associated parts, said frame including a front portion to be carried on the back of an operator; sound insulating means for reducing noises produced by the engine and the blower, said sound insulating means having a flexible sheet including opposite side portions extending rearwardly from said front portion of the frame, and a rear portion extending between said opposite side portions whereby said sound insulating means surrounds a machine body, including the engine and the blower, at least at the opposite sides and the rear side of the machine body.
Claim 3
Dependent Claim
28 words
A backpack power blower apparatus as recited in claim 1 wherein said sound insulating means comprises openings to allow parts of the machine body to protrude there through.
Claim 4
Dependent Claim
58 words
A backpack power blower apparatus as recited in claim 1, wherein said sound insulating means further comprises a solid plate member having said flexible sheet lining over said solid plate member, said solid plate member including opposite side portions extending rearwardly from said front portion of the frame, and a rear portion extending between said opposite side portions.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-03-22 | 1996-09-21 | 1997-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-03-22 | 2000-09-21 | 2001-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-03-22 | 2004-09-21 | 2005-03-23 | $7700.00 | Window Closed / Lapsed |