Motorized floor stripper machine

• US 10,316,529 B2
• Filed: 06/30/2015
• Issued: 06/11/2019
• 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 Darrell
• Primary Examiner(s): Bagnell, David J
• Assistant Examiner(s): Goodwin, Michael A
• Application Number:
  US14/788,036
• Publication Number:
  US 20170002576A1
• Time in Patent Office: 1,442 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;

one or more blade carrier guides enclosing a vertical opening mounted to the bottom surface of the frame;

a blade carrier having one or more blade carrier guide inserts insertable within the one or more 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 a vertical direction within the vertical opening of the one or more blade carrier guides, where the vertical direction is orthogonal to the plane of the orbital motion; and

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

wherein the one or more blade carrier guides are one or more channels, and wherein the one or more blade carrier guide inserts of the blade carrier comprise one or more rotatable ball bearings fastened to the blade carrier, the one or more rotatable ball bearings insertable within one of the one or more channels.

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. 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;

one or more blade carrier guides enclosing a vertical opening mounted to the bottom surface of the frame;

a blade carrier having one or more blade carrier guide inserts insertable within the one or more 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 a vertical direction within the vertical opening of the one or more blade carrier guides, where the vertical direction is orthogonal to the plane of the orbital motion; and

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

wherein the blade carrier has a top surface that includes an interface for releasably mounting a blade, where 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, and where a first pair of the plurality of blade fastener holes for mounting a blade of a first width are positioned between a second pair of the plurality of blade fastener holes for mounting a blade of a second wider width, and where a portion of the blade carrier outside the first pair of blade fastener holes and inside the second pair of blade fastener holes is relieved from an area inside the first pair of blade fastener holes.

5. 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;

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

a blade carrier coupled to the cam and linearly coupled to the one or more 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 cam imparts a linear motion to the blade carrier, and

wherein the one or more blade carrier guides are one or more channels, and wherein the blade carrier is linearly coupled to the one or more channels by one or more rotatable ball bearings fastened to the blade carrier and insertable within the one or more channels.

6. The motorized floor stripper machine of claim 5, 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.

7. The motorized floor stripper machine of claim 5, further comprising:

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

8. 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;

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

a blade carrier coupled to the cam and linearly coupled to the one or more 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 cam imparts a linear motion to the blade carrier, and

wherein the blade carrier has a top surface that includes an interface for releasably mounting a blade, where 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, and where a first pair of the plurality of blade fastener holes for mounting a blade of a first width are positioned between a second pair of the plurality of blade fastener holes for mounting a blade of a second wider width, and where a portion of the blade carrier outside the first pair of blade fastener holes and inside the second pair of blade fastener holes is relieved from an area inside the first pair of blade fastener holes.

9. A blade carrier assembly for a motorized floor stripper machine, the blade carrier assembly comprising:

a blade carrier having a front top surface for mounting a blade, the blade carrier including a plurality of blade fastener holes; and

a blade clamp fastenable to the blade carrier front top surface, the blade clamp including a plurality of blade fastener holes;

wherein a first pair of the plurality of blade fastener holes for mounting a blade of a first width are positioned between a second pair of the plurality of blade fastener holes for mounting a blade of a second width that is wider than the first width; and

where a portion of the blade carrier outside the first pair of blade fastener holes and inside the second pair of blade fastener holes is relieved from an area inside the first pair of blade fastener holes.