Angled shank blade

• US 7,082,686 B2
• Filed: 11/03/2004
• Issued: 08/01/2006
• Est. Priority Date: 11/26/2002
• Status: Expired due to Term

• Current Assignee: National Flooring Equipment Incorporated
• Original Assignee: National Carpet Equipment Incorporated
• Inventors: Anderson, Martin L.
• Primary Examiner(s): PAYER, HWEI SIU CHOU
• Application Number:
  US10/980,586
• Publication Number:
  US 20050060891A1
• Time in Patent Office: 636 Days
• Field of Search: 301/67, 301/68, 301/69, 301/70, 303/14, 303/15, 303/46, 303/48, 303/49, 303/52, 303/57, 299/36.1, 299/37.1
• US Class Current: 30/169
• CPC Class Codes: B26B 3/08 specially adapted for cutting cardboard, or wall, floor, or like covering materials
• CPC Class Codes: E04D 15/003 for removing roof material for floor coverings E04G23/006
• CPC Class Codes: E04G 2023/085 crowbars specially adapted for wrecking wooden buildings
• CPC Class Codes: E04G 23/006 Arrangements for removing of previously fixed floor coverings

Abstract

An angled shank blade for a carpet or tile stripping machine with a flat bottomed blade for engaging the surface of a floor. The leading edge of the blade having an angle of about 20 degrees, followed by a tapered top surface portion and a rear portion. An angled blade head attached to the rear portion and angled upward at about 20 degrees. A shank attached to the blade at an angle of about 20 degrees for receiving the weight of the floor stripping machine and keeping the blade parallel to the floor while lifting the flooring material over the leading edge, the tapered portion, the blade head and shank smoothly and efficiently without binding. The blade may have a carbide insert for long lasting skiving of material from the floor.

Claims

1. A floor stripping blade comprising:

a blade portion having a flat bottom surface,

a leading edge portion angled relative to the floor for skiving flooring material from a floor,

a rear portion having a flat top surface aft of the leading edge portion,

a blade head attached to the rear portion and angled approximately at the same angle relative to the floor as the leading edge portion,

a shank attached to the blade head for connecting the floor stripping blade to a floor stripping machine at an angle such that the weight of the floor stripping machine rests on the flat bottom surface of the blade portion resting on the floor in front of the floor stripping machine.

2. A floor stripping blade as in claim 1 wherein:

the blade portion has a tapered portion between the leading edge portion and the rear portion.

3. A floor stripping blade as in claim 1 wherein:

the leading edge portion angled approximately 20 degrees upward with respect to the floor.

4. A floor stripping blade as in claim 2 wherein:

the leading edge portion angled approximately 20 degrees upward with respect to the floor.

5. A floor stripping blade as in claim 1 wherein:

a carbide insert attached to the front of the leading edge portion of the floor stripping blade.

6. A floor stripping blade as in claim 2 wherein:

a carbide insert attached to the front of the leading edge portion of the floor stripping blade.

7. A floor stripping blade as in claim 5 wherein:

the carbide insert has a nose portion with an angle of approximately 45 degrees with respect to the surface of the floor for efficiently skiving material from the floor.

8. A floor stripping blade as in claim 6 wherein:

the carbide insert has a nose portion with an angle of approximately 45 degrees with respect to the surface of the floor for efficiently skiving material from the floor.

9. A floor stripping blade as in claim 1 wherein:

the shank has a top surface angled at approximately the same angle as the blade head.

10. A floor stripping blade as in claim 2 wherein:

the shank has a top surface angled at approximately the same angle as the blade head.

11. A floor stripping blade as in claim 1 wherein:

a nose portion for skiving flooring material from a floor attached at the front of the leading edge portion.

12. A floor stripping blade as in claim 2 wherein:

a nose portion having an angle of about 45 degrees with respect to the floor for skiving flooring material from a floor attached at the front of the leading edge portion.