Polishing or grinding pad assembly
AssigneeDiamond Tool Supply, Inc.
InventorTchavdar V. Tchakarov
Life of this patent
Estimating the term…
Abstract
A floor polishing or grinding pad assembly is provided. In one aspect, a polishing or grinding pad assembly employs a flexible pad, a reinforcement layer or ring, and multiple floor-contacting tools such as abrasive disks. In another aspect, the reinforcement layer includes a wavy or undulating internal edge shape. A further aspect includes an inner ring edge having radially extending slots between pairs of radially enlarged tool mounting peaks. Still another aspect includes an insulator or spacer between a head of an abrasive tool and a reinforcement ring.
Claims62
A pad assembly comprising:
- a pad including an upper surface, a floor-facing surface and a peripheral surface;
- and
- a reinforcement layer attached to the floor-facing surface of the pad, and the reinforcement layer including an internal edge defining a hole therethrough;
- wherein the internal edge has a repeating undulating shape including radially oriented peaks with valleys located in between adjacent pairs of the peaks.
A pad assembly comprising:
- a fibrous pad including an upper surface, a floor-facing surface and a peripheral surface;
- and
- a reinforcement layer attached to the floor-facing surface of the pad, and the reinforcement layer including an internal edge defining a hole therethrough;
- wherein the internal edge has a repeating undulating shape including at least four radially oriented peaks with valleys located in between adjacent pairs of the peaks.
A pad assembly comprising:
- a flexible and rotatable pad including an upper surface, a floor-facing surface and a peripheral surface;
- a flexible reinforcement ring attached to the floor-facing surface of the pad, and the reinforcement ring including a circular external edge and an internal edge defining a hole therethrough;
- the internal edge including alternating radially extending slots and radially enlarged peaks, defining an opening through which a portion of the pad is exposed;
- and
- floor-contacting abrasive tools attached to the reinforcement ring.
A pad assembly comprising:
- a flexible pad including an upper surface, a floor-facing lower surface and a peripheral surface;
- a flexible reinforcement layer attached to a bottom surface of the pad;
- abrasive tools attached to a floor-facing surface of the reinforcement layer;
- and
- an insulator located between a section of each of the tools and the reinforcement layer;
- wherein the insulator includes a circular peripheral edge and a central hole.
The pad assembly comprising:
- a flexible and rotatable pad including a circular peripheral surface;
- a metallic reinforcement ring with a substantially circular peripheral surface;
- workpiece-abrading tools coupled to the reinforcement ring;
- spacers located between the tools and the reinforcement ring, the spacers including a polymeric or fiberglass material;
- the spacers being spaced apart from each other and aligned with the tools;
- and
- an integrally formed post extending from a backside of each of the tools, the integrally formed post extending through a hole in an aligned one of the insulators.
A method of making an abrasive pad assembly, the method comprising:
- (a) attaching a metallic and flexible reinforcement layer adjacent to a periphery of a thicker, flexible and rotatable pad on a workpiece-facing surface of the pad;
- (b) locating insulators against a workpiece-facing side of the reinforcement layer;
- (c) attaching workpiece abrading tools to the reinforcement layer or insulators such that the insulators are sandwiched between at least a lateral enlarged section of each of the tools and the reinforcement layer;
- (d) inserting a post extending from a backside of each of the tools through a central hole in an associated one of the insulators;
- and
- (e) securing the post to a top surface of the reinforcement layer.
A pad assembly comprising:
- a flexible pad including an upper surface, a floor-facing lower surface and a peripheral surface;
- a flexible reinforcement layer attached to a bottom surface of the pad;
- abrasive tools attached to a floor-facing surface of the reinforcement layer;
- an insulator located between a section of each of the tools and the reinforcement layer;
- and
- a fastener extending from a backside of at least one of the tools, the fastener extending through a hole in the insulator.
Dependencies are inferred from the claim text.