Brush roll speed indicator

• US 3,253,295 A
• Filed: 04/27/1964
• Issued: 05/31/1966
• Est. Priority Date: 04/27/1964
• Status: Expired due to Term

• Current Assignee: Robert S. Waters
• Original Assignee: Robert S. Waters
• Inventors: Waters, Robert S.
• Application Number:
  US04/362,734
• Time in Patent Office: 764 Days
• US Class Current: 15/339
• CPC Class Codes: A47L 9/04 with driven brushes or agitators
• CPC Class Codes: Y10S 116/42 Oil filter

Claims

1. A VACUUM CLEANER COMPRISING IN COMBINATION, A VACUUM NOZZLE, A ROTARY BRUSH MOUNTED IN SAID NOZZLE, MEANS TO ROTATE SAID BRUSH, MAGNETIC MEANS MOUNTED ON A PORTION OF SAID BRUSH FOR ROTATION THEREWITH TO GENERATE A VARYING MAGNETIC FIELD, A SPEED INDICATOR MOVABLY MOUNTED ON THE EXTERIOR OF SAID NOZZLE IN THE VICINITY OF SAID PORTION OF SAID BRUSH, AND MEANS ON SAID INDICATOR TO BE RESPONSIVE TO THE VARYING MAGNETIC FIELD OF SAID MAGNETIC MEANS ON SAID BRUSH TO CAUSE MOVEMENT OF SAID INDICATOR MEANS AS SAID BRUSH IS ROTATED.