Patent ID: 8573094
Filing Date: 2013-11-05
Classification: B25B

Abstract:
1. In a swivel grip oil filter wrench including: (a) a lever arm handle assembly having a handle grip end section and an opposite pivot connection end, said pivot connection end including a first and a second pivot connections, said first pivot connection spaced from the second pivot connection, each pivot connection having a pivot axis, said axes generally parallel to each other; (b) an elongate, flexible, steel alloy metal band having a planar inside surface, an elongate dimension extending between a first end and a second end of said band, said band having a generally uniform width band section with generally parallel first and second lateral side edges extending along at least a portion of the elongate dimension, said first pivot connection of the handle pivotally attached to a first pivot connection of said band and said second pivot connection of said handle attached to a second pivot connection of said handle, said first and second pivot connections of the band longitudinally spaced whereby the handle is rotatable about the pivot axes to alter the circumferential dimension of the band, the improvement comprising (c) an alloy coating of grit particles, metallurgically bonded to at least about 4% to about 20% of the inside surface of said band section, said alloy coating forming an abrasive grit surface pattern on the inside surface of said band section, said surface pattern comprising at least two separate, generally uniformly sized and shaped, generally rectangular alloy sections of generally uniform thickness, each said rectangular alloy section having a side positioned along one of said first and second lateral side edges of the band section, each separate alloy section covering only a portion of said inside surface of said band section between said first and second lateral side edges, said alloy sections separated from each other in the elongate dimension direction of said band, and at least one side of said alloy sections aligned along said first lateral side edge of said band section and at least one side of another of said alloy sections aligned along said second lateral side edge of said band section.