Hand sweeper for carpets

• US 4,099,284 A
• Filed: 02/22/1977
• Issued: 07/11/1978
• Est. Priority Date: 02/20/1976
• Status: Expired due to Term

• Current Assignee: Tanita Corporation (Tanita)
• Original Assignee: Tanita Corporation (Tanita)
• Inventors: Nagasawa, Kazuo, Shinozaki, Mamoru, Takahama, Yuichi, Mikami, Yasao, Tubaki, Hachiro
• Primary Examiner(s): Roberts, Edward L.
• Application Number:
  US05/770,768
• Time in Patent Office: 504 Days
• Field of Search: 15/42
• US Class Current: 15/42
• CPC Class Codes: A47L 11/33 having means for storing dirt
• CPC Class Codes: A47L 11/4013 Contaminants collecting devices, i.e. hoppers, tanks or the like
• CPC Class Codes: A47L 11/4038 Disk shaped surface treating tools
• CPC Class Codes: A47L 11/4041 Roll shaped surface treating tools
• CPC Class Codes: A47L 11/4069 Driving or transmission means for the cleaning tools
• CPC Class Codes: A47L 11/4072 Arrangement of castors or wheels

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.

Claims

1. 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.

2. 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.

3. 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.