SURFACE TREATING APPARATUS

• US 3,742,546 A
• Filed: 05/10/1971
• Issued: 07/03/1973
• Est. Priority Date: 04/10/1968
• Status: Expired due to Term

• Current Assignee: Bengt Olof Crener, Erik Arne Blaeldh, Stig Carl-Oskar Ernolf
• Original Assignee: Bengt Olof Crener, Erik Arne Blaeldh, Stig Carl-Oskar Ernolf
• Inventors: Crener, Bengt Olof, Blaeldh, Erik Arne, Ernolf, Stig Carl-Oskar
• Primary Examiner(s): Roberts, Edward L.
• Assistant Examiner(s): Moore, C. K.
• Application Number:
  US05/141,832
• Time in Patent Office: 785 Days
• Field of Search: 15/49R,5R,320 401/136,137,138,140 222/453
• US Class Current: 15/50.1
• CPC Class Codes: A47L 11/20 combined with vacuum cleaning devices
• CPC Class Codes: A47L 11/201 with supply of cleaning agents
• CPC Class Codes: A47L 11/4038 Disk shaped surface treating tools
• CPC Class Codes: A47L 11/4044 Vacuuming or pick-up tools; Squeegees
• CPC Class Codes: A47L 11/4055 for lifting the tools to a non-working position
• CPC Class Codes: A47L 11/4069 Driving or transmission means for the cleaning tools
• CPC Class Codes: A47L 11/4075 Handles; levers
• CPC Class Codes: A47L 11/408 Means for supplying cleaning or surface treating agents

Abstract

In surface treating apparatus having rotatable treating members movable over a surface, a container for liquid wax which is positioned in a compartment and has an outlet at its bottom normally closed by a valve having a vertically movable stem. A quantity of liquid wax is dispensed from the container each time the valve is moved upward from its closed position and returned thereto. The container is prevented from moving upward in its compartment when the valve is moved from its closed position by an upward force applied to the valve stem.

Claims

1. In surface treating apparatus of the class described comprising a. rotatable surface treating means movable over a surface to be treated, b. means including an electric motor for driving said rotatable surface treating means, c. a housing having a compartment, d. a container for holding a body of liquid wax, said container being disposed in said compartment and having an outlet at the bottom thereof, e. first mechanism including a vertically movable valve stem and a valve mounted thereon for dispensing a quantity of liquid wax from the outlet of said container each time the valve stem is moved upward from a valve closed position and returned thereto, f. said first mechanism further including means for imparting upward movement to said valve stem, g. second mechanism acting on said container to prevent the latter from moving upward in said compartment when upward movement is imparted to said valve stem by said movement impartment means, and h. a control member movable between first and second positions, such that when said control member is in its first position, said second mechanism is inoperable to prevent said container from moving upward in said compartment, and when said control member is in its second position, it functions to render said second mechanism operable to prevent said container from moving upward in said compartment.

2. Apparatus as set forth in claim 1 in which said first mechanism comprises structure defining a chamber and means whereby a measured quantity of liquid wax is introduced into said chamber each time said valve stem is returned to a valve closed position and such measured quantity of liquid wax is discharged from said chamber through the outlet of said container each time the valve stem is moved upward from a valve closed position, said structure being so constructed and arranged that said chamber is in communication with the atmosphere only through said outlet after liquid wax has been discharged therefrom whereby a body of air is trapped in said chamber above liquid introduced therein when said valve stem is returned to a valve closed position, such body of air functioning to effect discharge of liquid wax from said chamber through said outlet when said valve is moved upward from a valve closed position.

3. Apparatus as set forth in claim 1 in which said first mechanism comprises structure defining a chamber having an inlet through which liquid wax is adapted to flow from said container and means whereby a measured quantity of liquid wax is introduced into said chamber from said container each time said valve stem is returned to a valve closed positiOn and such measured quantity of liquid wax is discharged from said chamber through the outlet of said container each time the valve stem is moved upward from a valve closed position, said last-mentioned means including a disc mounted on said valve stem which is movable to and from a closed position at the inlet, said disc moving to a closed position at the inlet each time the valve stem is moved upward from a valve closed position and moving downward to a disc open position each time the valve stem returns to its valve closed position, and said structure being so constructed and arranged that said chamber is in communication with the atmosphere only at said outlet after liquid wax has been discharged therefrom whereby a body of air is trapped in said chamber above liquid wax introduced therein when said valve stem moves downward to a disc open position and returns to its valve closed position, such body of air functioning to effect discharge of liquid wax from said chamber when said disc moves to its closed position and said valve moves upward from its valve closed position.

4. Apparatus as set forth in claim 3 which includes resilient means for urging said valve stem downward to a valve closed position and disc open position.

5. Apparatus as set forth in claim 3 in which said container is open at the bottom and is provided with a cap which is apertured and defines the outlet, and means whereby said cap is removably connected to said container at the open bottom thereof, said first mechanism forming a unitary part of said cap and removable therewith when said cap is removed from said container.

6. In surface treating apparatus of the class described comprising a. rotatable surface treating means movable over a surface to be treated, b. means including an electric motor for driving said rotatable surface treating means, c. a housing having a compartment, d. a container for holding a body of liquid wax, said container being disposed in said compartment and having an outlet at the bottom thereof, e. first mechanism including a vertically movable valve stem and a valve mounted thereon for dispensing a quantity of liquid wax from the outlet of said container each time the valve stem is moved upward from a valve closed position and returned thereto, f. said first mechanism further including means for imparting upward movement to said valve stem, g. second mechanism acting on said container to prevent the latter from moving upward in said compartment when upward movement is imparted to said valve stem by said movement impartment means, h. said first mechanism comprising structure defining a chamber having an inlet through which liquid wax is adapted to flow from said container and means whereby a measured quantity of liquid wax is introduced into said chamber from said container each time said valve stem is returned to a valve closed position and such measured quantity of liquid wax is discharged from said chamber through the outlet of said container each time the valve stem is moved upward from a valve closed position, i. said last-mentioned means including a disc mounted on said valve stem which is movable to and from a closed position at the inlet, said disc moving to a closed position at the inlet each time the valve stem is moved upward from a valve closed position and moving downward to a disc open position each time the valve stem returns to its closed position, j. said container being open at the bottom and provided with a cap which is apertured and defines the outlet, k. means whereby said cap is removably connected to said container at the open bottom thereof, l. said first mechanism forming a unitary part of said cap and removable therewith when said cap is removed from said container, m. said first mechanism including an inverted U-shaped part of annular form having spaced inner and outer walls, n. said inner wall having a first length and forming a passageway which terminates at an openinG defining the inlet against which said disc seats in its closed position, o. said outer wall being longer than said inner wall and extending below the latter to said cap, p. said chamber being defined by said outer and inner walls and said cap.

7. Apparatus as set forth in claim 8 in which the upper ends of said inner and outer walls are joined to one another, and helical spring means between said inner and outer walls which extends lengthwise of the valve stem between the closed end of said walls and said disc and functions to urge said valve stem downward to a valve closed position and disc open position.