Ergonomic sanding block

• US 8,870,629 B2
• Filed: 04/20/2012
• Issued: 10/28/2014
• Est. Priority Date: 04/20/2011
• Status: Expired due to Fees

• Current Assignee: L.A.D. Global Enterprises, Inc.
• Original Assignee: L.A.D. Global Enterprises, Inc.
• Inventors: Comstock, Matthew S., Davis, Kyle, Hsien, Weng Po
• Primary Examiner(s): Wilson, Lee D
• Assistant Examiner(s): HALL JR, TYRONE VINCENT
• Application Number:
  US13/451,680
• Publication Number:
  US 20120270482A1
• Time in Patent Office: 921 Days
• Field of Search: 451/523, 451/524, 451/525
• US Class Current: 451/525
• CPC Class Codes: B24D 15/023 using in exchangeable arrangement a layer of flexible material

Abstract

A two-piece sanding block presents base and handle/grip components. The base presents a flat surface for extension of a strip of sandpaper or other abrasive material therealong. Prongs extending from the base pierce the ends of the strip. The prongs seat within the handle and cooperate with a post which seats in the base for precluding slippage between the base and handle during the sanding process. Upon placing the handle atop the base the strip is further held in place. The top surface of the handle presents a particularly configured arch-like surface for complementing the fingers and palm of the user in an ergonomic fit therebetween.

Claims

1. A tool adapted to hold abrasive material comprising:

a base having a top surface and a planar bottom surface for extension of a strip of abrasive material therealong;

a pair of opposed end walls normal to said bottom surface of said base;

a pair of sidewalls extending between said base end walls;

a plurality of prongs extending from said top surface of said base, said prongs adapted to extend through the ends of the strip of abrasive material overlapping said base end walls and extending along said bottom surface of said base;

a releasable handle having a top surface and a bottom surface extending between a pair of opposed end walls;

a pair of opposed handle sidewalls extending between said handle end walls, one handle sidewall having a greater height than an opposed handle sidewall above said base, said bottom surface of said handle having a configuration complementary to said top surface of said base to present a contiguous fit therebetween;

means for receiving said prongs of said base within said handle with the abrasive material ends in a contiguous fit between said handle bottom surface and said base top surface;

said handle top surface comprising a contoured surface, said contoured surface presented by an arch-like surface longitudinally extending between said opposed end walls of said handle, said arch-like surface presenting a first laterally extending portion increasing in height, relative to said base, as said top surface laterally extends from one handle sidewall to said opposed handle sidewall to a region on said handle top surface displaced from said one handle sidewall, said arch-like surface then presenting a second laterally extending portion successively decreasing in height relative to said base, as said arch-like surface laterally extends from said region to said opposed handle sidewall, said first laterally extending portion of said arch-like surface at a greater height, relative to said base, adjacent said one handle sidewall than the height of said second laterally extending portion of said arch-like surface adjacent said opposed handle sidewall, said greater height of said first laterally extending portion adjacent said one handle sidewall adapted to be contiguously positioned underneath the index finger and adjacent fingers of a user with said height of said second laterally extending portion adjacent said opposed sidewall adapted to be contiguously positioned underneath the ring finger and adjacent fingers of a user grasping said handle.

2. The tool as claimed in claim 1 wherein said prong receiving means comprises a plurality of apertures in said handle bottom surface, said prongs projecting into said apertures with the abrasive material between said handle bottom surface and base top surface.

3. The tool as claimed in claim 2 further comprising:

at least one post extending from said bottom surface of said handle;

a post aperture in said top surface of said base, a reception of said at least one post in said post aperture precluding slippage between said handle and said base.

4. A tool adapted to hold abrasive material comprising:

a base having a top surface and a bottom surface for extension of a strip of abrasive material having a pair of opposed ends therealong;

a pair of opposed end walls extending from said bottom surface of said base;

a pair of sidewalls longitudinally extending between said opposed end walls;

a releasable handle having a top surface for grasping by a user and a bottom surface extending between a pair of opposed end walls;

a pair of sidewalls longitudinally extending between said handle end walls, said bottom surface of said handle having a configuration complementary to said top surface of said base to present a fit therebetween with the pair of opposed ends of the abrasive material therebetween, said top surface of said handle presenting an arch-like configuration longitudinally extending between said handle end walls, said arch-like configuration of said handle top surface having a greater height, relative to said base, adjacent one sidewall of said pair of handle sidewalls than a height relative to said base, of said arch-like configuration adjacent the other sidewall of said pair of handle sidewalls, whereby said top surface of said handle presents a fit complementary to the hand of a user grasping said handle.

5. The tool as claimed in claim 4 further comprising a plurality of prongs extending from said top surface of said base, said prongs adapted to extend through ends of the strip of abrasive material positioned between said base top surface and said bottom surface of said handle.

6. The tool as claimed in claim 5 further comprising means for receiving said prongs within said handle with a portion of abrasive material in a contiguous fit between said handle and said base.

7. The tool as claimed in claim 6 further comprising means for precluding slippage between said handle and said base upon a grasping of said handle by a user.

8. The tool as claimed in claim 5 wherein said prong receiving means comprises a plurality of apertures in said handle bottom surface, said prongs projecting into said apertures with the abrasive material between said handle bottom surface and base top surface.

9. The tool as claimed in claim 7 wherein said slippage precluding means comprises:

at least one post extending from said bottom surface of said handle;

at least one post aperture in said top surface of said base, a reception of said at least one post in a corresponding said at least one post aperture precluding slippage between said handle and said base.

10. A tool adapted to hold abrasive material comprising:

a base having a top surface and a bottom surface for extension of a strip of abrasive material therealong;

a pair of opposed end walls extending from said bottom surface of said base;

a pair of sidewalls extending between said end walls;

a handle having a top surface for grasping by a user and a bottom surface, said top and bottom surfaces of said handle longitudinally extending between a pair of opposed end walls;

first and second opposed sidewalls extending between said handle end walls, said bottom surface of said handle having a configuration complementary to said top surface of said base to present a fit therebetween;

said handle top surface comprising an arch-like surface longitudinally extending between said opposed end walls of said handle, said arch-like surface presenting a higher portion of said handle top surface, relative to said base bottom surface, at a first region adjacent said first handle sidewall than a height of a second lower portion at a second region adjacent said second handle sidewall, said higher portion adapted to bear against at least the index finger and adjacent finger of the user grasping said handle.

11. The tool as claimed in claim 10 further comprising:

a plurality of prongs extending from said top surface of said base for extension through ends of the strip of abrasive material extending along said bottom surface of said base;

a plurality of apertures in said handle for receiving said prongs therein with the abrasive material ends between said handle and said base.

12. The tool as claimed in claim 10 further comprising:

at least one post extending from said bottom surface of said handle;

at least one aperture in said top surface of said base, a reception of said at least one post in said at least one corresponding aperture precluding slippage between said handle and said base.

13. The tool as claimed in claim 10 wherein said higher portion of said top surface successively increases in height from said first handle sidewall to a distance approximate one-third a distance between said first and second handle sidewalls.

14. The tool as claimed in claim 10 wherein said arch-like surface successively increases in height in a lateral extension from said first handle sidewall and then successively decreases in height in a lateral extension towards said second handle sidewall whereby to present said higher portion of said arch-like top surface at said first region adjacent said first handle sidewalls and said lower portion of said arch-like top surface at said second region adjacent said second handle sidewall.

15. The tool as claimed in claim 10 wherein said higher portion at said first region of said handle top surface is adapted to bear against a palm of a user grasping said top surface.

16. The tool as claimed in claim 10 wherein said lower second portion at said second region of said handle top surface is adapted to bear against at least a little finger of a user grasping said handle top surface.

17. The tool as claimed in claim 14 handle wherein said higher portion at said first region of said handle top surface is adapted to bear against a palm of a user grasping said top surface.

18. The tool as claimed in claim 14 wherein said lower second portion at said second region of said handle top surface is adapted to bear against at least a little finger of a user grasping said top surface.

19. The tool as claimed in claim 10 wherein a maximum height of said arch-like surface is positioned midway between said pair of opposed handle end walls.

20. The tool as claimed in claim 10 wherein a maximum height of said arch-like surface is positioned approximately one-third a distance between said opposed sidewalls of said handle.