Surface protective fastener tool

Details Surface protective fastener tool Surface protective fastener tool

B - Operations, Transporting

25

B

81/20

B25B 23/00 (2006.01)

Patent

CA 2024501

SURFACE PROTECTIVE FASTENER TOOL Abstract of the Disclosure A surface protective fastener tool for avoiding abrasion of an underlying surface as a threaded fastener is rotated by a tool. Several embodiments of the surface protective fastener tool (10, 50, 70, 100, 120, 160, 200, 240, 260, 280, 280', and 300) are disclosed, each including a sleeve that fits around the exterior of a tool used to rotate a threaded fastener. A resilient cushion or lip (38, 52, 82, 108, 128, 176, 214, 254, 270, 288, 288', 290, and 290') seats against the underlying surface (24), preventing the tool from contacting the surface as it is rotated. In one of the embodiments (70), the blade (74) of a screwdriver shaft (72) is enclosed in a sleeve (80) having an insert (86) formed around the blade and rotatable with it as the screwdriver is turned. The insert includes a cavity (88), sized to fit over the head of a threaded fastener, tending to lock the screwdriver blade in place so that it is less likely to slip from the fastener and mar an adjacent surface. Inaddition, the resilient cushion protects the adjacent surface in the event that the blade accidentally slips from the threaded fastener. The other embodiments are designed for use with a socket wrench (12, 102, 122, 162, 242, 264, and 282), fitting around its exterior and supporting it, so that it does not contact the underlying surface as the socket wrench is turned. Abrasion of the surface due to such contact is thereby avoided. A thermal insulating sheath (258) provided around the exterior surface of the sleeve of the surface protective fastener tool reduces heat transfer between the hand of an operator gripping the device and the fastener tool. 1/CARE-5225

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