Patent ID: 9151316
Filing Date: 2015-10-06
Classification: F16B,Y10T

Abstract:
1. A method for securing a fastener to an object and subsequently removing said fastener, comprising: a. providing a fastener, including, b. providing a lock washer, including, c. inserting said threaded shaft of said fastener through said central passage of said look washer, with said lock washer being oriented so that said outer surface of said lock washer faces said thrust surface of said head; d. threading said threaded shaft of said fastener into said object and tightening said fastener so that said thrust surface forces said lock washer against said object, thereby propelling said at least one spike into said object and arresting rotation of said lock washer with respect to said object; e. said saw tooth array and said at least one spring to engaging so that said at feast one spring tab allows said fastener to rotate in a direction that further compresses said lock washer against said object, but wherein said spring tab prevents rotations of said fastener in a direction opposite to said first direction; f. providing an extraction tool including a forward surface and three blades configured to slidably fit within said three slots in said receiver, thereby engaging said fastener head, g. engaging said extraction tool said fastener head; h. pressing said extraction tool toward said threaded shaft so that said forward surface of said extraction tool deflects said at least one spring tab away from said saw tooth array, thereby disengaging said at least one spring tab from said saw tooth array; and i. using said extraction tool to turn said fastener in said direction opposite to first direction.