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US 11,028,870 B2Granted
Hybrid three-point drive fastener
AssigneeMacLean-Fogg Company
InventorsSteven J. Tomaszewski, Duncan A. MacLean, Larry J. Wilson
Life of this patent
Estimating the term…
Abstract
Fasteners are disclosed for use with multiple standard torque delivery tools. The fasteners include several different torque bearing portions for use with different torque delivery tools, as well as non-torque bearing portions disposed between torque bearing portions.
Claims18
A fastener comprising:
- a threaded portion;
- a first bearing portion to receive torque from a first tool and transmit torque to the threaded portion, wherein the first bearing portion comprises exactly three pairs of first bearing surfaces, wherein each pair of first bearing surfaces is equally spaced apart from each other pair of first bearing surfaces;
- a second bearing portion to receive torque from a second tool and transmit torque to the threaded portion, wherein the second bearing portion comprises exactly six concave bearing surfaces;
- wherein each pair of the first bearings surfaces is disposed between two of the concave bearing surfaces;
- and
- a non-bearing portion, wherein the non-bearing portion comprises three convex non-bearing surfaces, wherein each convex non-bearing surface separates two of the concave bearing surfaces,
- wherein each concave bearing surface smoothly transitions to an adjacent non-bearing surface,
- wherein one of the first bearing surfaces of each of the three pairs of first bearing surfaces is parallel to one other first bearing surface of one other of the three pairs of first bearing surfaces.
5 more elements
A fastener comprising:
- a threaded portion;
- a first bearing portion to receive torque from a first socket tool and transmit torque to the threaded portion, wherein the first bearing portion comprises exactly three pairs of first bearing surfaces;
- a second bearing portion to receive torque from a second socket tool and transmit torque to the threaded portion, wherein the second bearing portion comprises concave bearing surfaces;
- wherein each pair of the first bearings surfaces is disposed between two of the concave bearing surfaces;
- and
- three convex non-bearing surfaces wherein each convex non-bearing surface is disposed between two of the pairs of first bearing surfaces and between two of the concave bearing surfaces,
- wherein each concave bearing surface smoothly transitions to one adjacent non-bearing surface,
- wherein one of the first bearing surfaces of each of the three pairs of first bearing surfaces is parallel to one other first bearing surface of one other of the three pairs of first bearing surfaces.
5 more elements
A fastener comprising:
- a threaded portion;
- a fastener head having exactly three fastener points, each fastener point comprising;
- a first bearing portion to receive torque from a first tool and transmit torque to the threaded portion;
- and
- a second bearing portion defining a concave bearing surface to receive torque from a second tool and transmit torque to the threaded portion;
- and
- three convex non-bearing surfaces, wherein one of the non-bearing surfaces is disposed between each of the fastener points, each fastener point projecting beyond a periphery of the non-bearing surfaces, wherein each convex non-bearing surface separates two of the concave bearing surfaces,
- wherein each concave bearing surface smoothly transitions to an adjacent non-bearing surface,
- wherein the first bearing portion of each fastener point is parallel to one other bearing portion of one other fastener point.
6 more elements
Dependencies are inferred from the claim text.