Height adjustment means for a cylindrical brush in a carpet sweeper

• US 4,489,457 A
• Filed: 11/29/1983
• Issued: 12/25/1984
• Est. Priority Date: 03/21/1983
• Status: Expired due to Fees

• Current Assignee: Leifheit AG Leifheitstrasse
• Original Assignee: ITT Industries (ITT, Inc.)
• Inventors: Schulein, Rolf G., Deimel, Helmut
• Primary Examiner(s): ROBERTS JR, EDWARD
• Application Number:
  US06/555,914
• Time in Patent Office: 392 Days
• Field of Search: 15/41-48
• US Class Current: 15/41.1
• CPC Class Codes: A47L 11/33 having means for storing dirt
• CPC Class Codes: A47L 11/40 Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
• CPC Class Codes: A47L 11/4058 for adjusting the height of the tool

Abstract

Height adjustment means for a cylindrical brush in a carpet sweeper with a U-shaped adjusting yoke which loads the cylindrical brush and is mounted in the housing by angled parts molded on the free ends of its members and is loaded at the summit part by a spring connected to an adjusting slide and riding up on ramp surfaces.

Claims

1. In a carpet sweeper of the type including a housing, means for supporting said housing for movement on a surface to be cleaned and means for moving said housing, the combination comprising:

cylindrical brush means; and

means for mounting said brush means on the housing for adjustment of the spacing thereof from the surface to be cleaned including

an adjusting member having two free ends and holding said cylindrical brush means in said housing for rotation about an axis,

supporting parts each extending from one of said ends of said member at an angle relative thereto and being pivotally mounted in said housing,

an adjusting element slidably mounted on said housing,

means for pivoting said adjusting member about said supporting parts, said means having two ends, each of which is slidably mounted on said member, and a section between said ends which is connected to said adjusting element,

inclined portions on the interior surface of said housing for guiding said ends of said pivoting means during movement along said adjusting member.

2. The carpet sweeper as claimed in claim 1 wherein said adjusting member is substantially U-shaped having two lateral sections and a transverse section joining said lateral sections, and wherein said brush means is mounted on said lateral sections and said ends of said pivoting means are mounted on said transverse section.

3. The carpet sweeper as claimed in claim 2 wherein said section of said pivoting means is a spring and said ends of said pivoting means are projections each of which at least partially surround said transverse section of said adjusting member.

4. The carpet sweeper as claimed in claim 3 wherein said projections are of U-shaped construction and include guide surfaces which engage with said transverse section of said adjusting member.

5. The carpet sweeper as claimed in claim 1 wherein said housing has one removable part which has said mounting means attached thereto.