Multiple-armed nut
Patent 5575602 Issued on November 19, 1996. Estimated Expiration Date: 
August 17, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
August 17, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 1397876 3379231 3492841 3760659 InventorsApplicationNo. 516339 filed on 08/17/1995US Classes:411/405, Opposed open ended plural slots, e.g., spanner, etc.81/176.15, Having means to engage work axially81/461, Inserted portion having plural, separate, work-engaging projections411/919SCREW HAVING DRIVING CONTACTSExaminersPrimary: Meyers, Steven N.Assistant: Santos, Robert G. International ClassesF16B 039/282B25B 023/08 AbstractA nut device and corresponding tool of such shape to aid in the ease of removal from a threaded bolt, stud, or the like. The principal intended use of this invention is for fastening the wheels of a vehicle to the vehicle's axle, but could easily be applied to any threaded fastening system. The nut and subsequent tool fit together in such a manner that prevents slippage or dislodging of the tool from the nut while in operation. This problem is common for conventional hexagonal-type threaded fastener and tool systems that are typically used on wheels of vehicles.Other References
Field of SearchOpposed open ended plural slots, e.g., spanner, etc.Having driver retaining means Plural diverse driving structures SCREW HAVING DRIVING CONTACTS Spanner Having means to engage work axially And means to engage peripheral face of work Inserted portion having plural, noncollinear blades (e.g., Phillips) Inserted portion having plural, separate, work-engaging projections | |
