Attachment hub, backup pad, and abrasive disc
Assignee3M Innovative Properties Company
InventorsPaul Larking, Andrew Robert Henry
Life of this patent
Estimating the term…
Abstract
The present invention relates to an attachment hub for attachment to a sander, comprising a quick-release attachment assembly configured for releasable and aligned engagement with a counterpart of a backup pad particularly for an abrasive disc. Furthermore, the invention relates to a backup pad having a disc-like shape and comprising a first major surface and a second major surface, the first major surface configured for direct or indirect attachment of an abrasive disc, and the second major surface configured for facing towards an attachment hub for attachment to a sander, and a mounting portion for aligned engagement with an attachment hub of a sander.
Claims13
An attachment hub for attachment to a sander, comprising a quick-release attachment assembly configured for releasable and aligned engagement with a counterpart of a backup pad particularly for an abrasive disc, wherein the quick-release attachment assembly comprises at least one spring member comprising an engagement portion configured for engagement with the counterpart, the at least one spring member extends in a radial direction from a radially inner portion to a radially outer portion and having the engagement portion arranged at the radially outer portion;
- wherein the at least one spring member comprises a straight section oriented radially within a space of a frame, the engagement portion being formed at the radially outer end section of the straight section, and the straight section being connected to one or more truss elements of the frame, wherein the straight section is connected to the frame by a plurality of biasing elements that bias the engagement portion towards an engaged position.
Dependencies are inferred from the claim text.