Motorized floor stripper machine

• US 10,640,997 B2
• Filed: 04/24/2019
• Issued: 05/05/2020
• Est. Priority Date: 06/30/2015
• Status: Active Grant

• Current Assignee: Crain Cutter Co Inc.
• Original Assignee: Crain Cutter Co Inc.
• Inventors: Chambers, Gregory Joseph, Nguyen, Tan Dinh, Crain, Lance
• Primary Examiner(s): Bagnell, David J
• Assistant Examiner(s): Goodwin, Michael A
• Application Number:
  US16/393,843
• Publication Number:
  US 20190249453A1
• Time in Patent Office: 377 Days
• Field of Search: 299 371, 299 372, 299 381
• CPC Class Codes: E04G 23/006 Arrangements for removing of previously fixed floor coverings

Abstract

A motorized floor stripper machine includes a motor, a frame, and a blade carrier. The blade carrier is capable of holding blades of different sizes, which can be installed on the blade carrier. The blade carrier is mounted to the frame on shock absorbers. A cam on the frame is connected to the blade carrier by a linkage that includes a bearing block, a pivot plate, a pivot pin, and a support plate. The blade carrier includes ball bearings that fit within linear channels mounted to the frame, so that when the cam is driven in an orbital motion, the blade carrier moves in a generally linear forward-backward motion. The blade carrier is relieved and includes multiple sets of holes for securing blades of different sizes.

Claims

1. A motorized floor stripper machine comprising:

a frame having a bottom surface;

a motor attached to the frame;

a cam coupled to the motor to produce an orbital motion that defines a plane of orbital motion;

one or more blade carrier guides enclosing a vertical opening in a vertical direction orthogonal to the plane of orbital motion, the blade carrier guides mounted to the bottom surface of the frame;

a blade carrier having one or more blade carrier guide inserts fastenable to the blade carrier and extending from the blade carrier in the vertical direction, the blade carrier guide inserts insertable within the one or more blade carrier guides in the vertical direction within the vertical opening of the blade carrier guides to constrain the blade carrier to move in a linear motion in a cutting direction, where the one or more blade carrier guide inserts are moveable in the vertical direction within the vertical opening of the one or more blade carrier guides; and

a linkage coupling the cam to the blade carrier to impart a motion from the cam to the blade carrier.

2. The motorized floor stripper machine of claim 1, wherein the linkage comprises:

a pivot plate connected to the cam; and

a pivot pin connecting the pivot plate to the blade carrier.

3. The motorized floor stripper machine of claim 1, further comprising:

one or more shock absorbers coupling the blade carrier to the bottom surface of the frame.

4. The motorized floor stripper machine of claim 1, wherein the blade carrier has a top surface that includes an interface for releasably mounting a blade, the top surface including relieved portions.

5. The motorized floor stripper machine of claim 4, wherein the interface for releasably mounting a blade comprises a plurality of pairs of blade fastener holes set apart by different widths to accommodate a plurality of differently sized blades.

6. A motorized floor stripper machine comprising:

a frame having a bottom surface;

a motor attached to the frame;

a cam coupled to the motor to produce an orbital motion that defines a plane of orbital motion;

one or more blade carrier guides mounted to the bottom surface of the frame; and

a blade carrier linearly coupled to the cam by a linkage and constrained to move in a linear motion in a cutting direction by one or more blade carrier guide inserts fastenable to the blade carrier and extending from the blade carrier in a vertical direction orthogonal to the plane of orbital motion, the blade carrier guide inserts insertable within the one or more blade carrier guides in the vertical direction within a vertical opening of the blade carrier guides, where the blade carrier is moveable in a direction orthogonal to the plane of the orbital motion;

wherein when the motor drives the cam to produce an orbital motion, the blade carrier is moved by the linkage in a linear motion.

7. The motorized floor stripper machine of claim 6, wherein the blade carrier is coupled to the cam by a pivot plate connected to the cam and a pivot pin connecting the pivot plate to the blade carrier.

8. The motorized floor stripper machine of claim 6, further comprising:

one or more shock absorbers coupling the blade carrier to the bottom surface of the frame.

9. The motorized floor stripper machine of claim 6, wherein the blade carrier has a top surface that includes an interface for releasably mounting a blade, the top surface including relieved portions.

10. The motorized floor stripper machine of claim 9, wherein the interface for releasably mounting a blade comprises a plurality of pairs of blade fastener holes set apart by different widths to accommodate a plurality of differently sized blades.