Conformable hand sanding pad

• US 4,202,139 A
• Filed: 04/06/1978
• Issued: 05/13/1980
• Est. Priority Date: 04/06/1978
• Status: Expired due to Term

• Current Assignee: Minnesota Mining and Manufacturing Co (3M Company)
• Original Assignee: Minnesota Mining and Manufacturing Co (3M Company)
• Inventors: Roelofs, Glenn E., Hong, In S.
• Primary Examiner(s): Whitehead, Harold D.
• Assistant Examiner(s): Adolphson, K. Bradford
• Application Number:
  US05/893,989
• Time in Patent Office: 768 Days
• Field of Search: 51/391, 51/392, 51/393, 51/401, 51/405, 51/406, 51/407, 15/227, 2/DIG. 6, 16/126, 24/204
• US Class Current: 451/524
• CPC Class Codes: B24D 15/045 Glove-shaped abrasive devices
• CPC Class Codes: Y10T 24/2708 Combined with diverse fastener
• CPC Class Codes: Y10T 24/44034 Dissociable gripping members
• CPC Class Codes: Y10T 24/44641 having gripping member formed from, biased by, or mounted on resilient member
• CPC Class Codes: Y10T 428/14 Layer or component removable to expose adhesive
• CPC Class Codes: Y10T 428/24017 Hook or barb

Abstract

A flexible, hand-held sanding pad comprises a conformable, self-supporting pad having one major surface capable of providing temporary adhesive attachment for a sheet of pressure-sensitive adhesive-coated abrasive material and a handle means for maintaining the pad in contact with the hand of the user during use.

Claims

1. A hand-held sanding pad comprising

(1) a conformable, self-supporting pad at least about 1/32 inch thick having one major surface and an opposite major surface, said one major surface being capable of providing adhesive attachment for a sheet or pressure-sensitive adhesive-coated abrasive material during use yet permitting clean removal of said sheet after use, said pad being formed of a material which has a flexural rigidity of at least 500 mg. cm. and a Shore A durometer hardness value of less than 40;

(2) attached to said opposite major surface of said pad, handle means to maintain the pad in contact with the hand of the user during use, said handle means being provided by at least three segments of hook- and loop-type fastening material, with one segment of said fastening material being permanently attached to said opposite major surface and the other segments being temporarily engaged adjacent their ends to form a ring structure capable of accommodating at least one finger of the user and having on its outer surface a segment of material which is temporarily engaged with said attached segment to provide an attachable-detachable structure.

2. The sanding pad of claim 1 wherein said conformable, self-supporting pad is formed of a sponge rubber-fabric laminate wherein the fabric provides said one major surface capable of providing temporary adhesive attachment for a sheet of pressure-sensitive adhesive-coated abrasive material.

3. The sanding pad of claim 1 wherein said one major surface is embossed with a pattern to prevent permanent adhesion of said pressure-sensitive adhesive-coated abrasive material.

4. The sanding pad of claim 1 wherein said attached segment is provided by a strip of loop fastening material which is permanently attached to said opposite major surface and has temporarily engaged therewith a set consisting of at least one strip of loop fastening material and one strip of hook fastening material temporarily engaged adjacent their ends to provide said ring structure capable of accommodating at least one finger of the user and having an exposed segment of hook material on its outer surface for temporary engagement with the permanently attached loop material.

5. A hand-held sanding pad comprising

(1) a highly conformable, self-supporting, resilient sheet of foam material at least 1/16 inch thick and having one major surface capable of providing temporary adhesive attachment for a sheet or peressure-sensitive adhesive-coated abrasive material;

and

6. (2) permanently adhesively bonded to the opposite major surface of said sheet of foam material, a strip of loop material of the type employed in hook-and-loop fastening devices and, temporarily engaged therewith, a set consisting of at least one strip of loop material and one strip of hook material temporarily engaged adjacent their ends to provide a ring capable of accommodating at least one finger of the user and having an exposed segment of hook material on its outer surface to provide temporary engagement with the permanently attached loop material.