US4099284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hand sweeper for carpets
Assignee: Tanita Corp
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Filing: 1977-02-22
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Granted: 1978-07-11
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Expires: 1997-02-22
Abstract
Abstract Driving wheels for auxiliary rotary wheels are provided at the forward corners of a sweeper in a spaced relationship from driving wheels for a main rotary brush to provide a long wheel base.
Inventors
- 👤 Mamoru Shinozaki
- 👤 Yuichi Takahama
- 👤 Hachiro Tubaki
- 👤 Kazuo Nagasawa
- 👤 Yasao Mikami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:48
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4072; A47L11/32; A47L11/33; A47L11/4013; A47L11/4036; A47L11/4038; A47L11/4041; A47L11/4063; A47L11/4069
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
202 words
A hand sweeper comprising a body having a handle pivotably connected thereto, a base removably connected to said body, said base having a front end and a rear end and forming a dust box, a main rotary brush extending across said dust box, driving wheels on said base adjacent said rear end for rotating said main rotary brush to sweep dust into said dust box, auxiliary rotary brushes rotatably mounted on said base at its forward corners, each of said auxiliary rotary brushes including a horizontal shaft fixedly supported on the base and extending forwardly and outwardly from the base and at an oblique angle with respect to said main rotary brush, a boss rotatably mounted on said shaft, auxiliary driving wheels rotatably supported on said base adjacent said rear end in spaced relationship to said driving wheels for said main rotary brush, and means for transmitting rotation of said auxiliary driving wheels to said auxiliary rotary brushes to rotate them around said horizontal axes, said transmitting means including a bevel gear formed integrally with said boss, and a bevel gear formed on each of said two auxiliary driving wheels and respectively meshing with said bevel gear on said auxiliary rotary brush.
Claim 2
Dependent Claim
202 words
A hand sweeper comprising a body having a handle pivotably connected thereto, a base removably connected to said body, said base having a front end and a rear end and forming a dust box, a main rotary brush extending across said dust box, driving wheels on said base adjacent said rear end for rotating said main rotary brush to sweep dust into said dust box, auxiliary rotary brushes rotatably mounted on said base at its forward corners, each of said auxiliary rotary brushes including a horizontal shaft fixedly supported on the base and extending forwardly and outwardly from the base and at an oblique angle with respect to said main rotary brush, a boss rotatably mounted on said shaft, auxiliary driving wheels rotatably supported on said base adjacent said rear end in spaced relationship to said driving wheels for said main rotary brush, and means for transmitting rotation of said auxiliary driving wheels to said auxiliary rotary brushes to rotate them around said horizontal axes, said transmitting means including a bevel gear formed integrally with said boss, and a bevel gear formed on each of said two auxiliary driving wheels and respectively meshing with said bevel gear on said auxiliary rotary brush.
Claim 3
Dependent Claim
90 words
A hand sweeper according to claim 1, wherein said boss has an extension formed integrally therewith and a pair of diametrically opposed projections, and each of said brushes including a brush head with a cup-like brush and removably connected to said boss, said brush head having an integral cylindrical portion with a pair of diametrically opposed slots, each of said slots having arcuate recesses for receiving said projection to removably connect said brush head to said boss when said brush head has been fitted onto said extension of said boss.
Claim 4
Dependent Claim
36 words
A hand sweeper according to claim 2 wherein said cup-like brush is formed by holding bristles thereof provided on said brush head in an annular form, by means of a holder connected to said brush head.
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) | 1981-07-10 | 1982-01-09 | 1982-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-10 | 1986-01-09 | 1986-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-10 | 1990-01-09 | 1990-07-11 | $7700.00 | Window Closed / Lapsed |