Male anti-false thread fastener member
AssigneeMathread Inc.
InventorMichael Garver
Life of this patent
Estimating the term…
Abstract
A male anti-false thread fastener member having features, including: a shank that has a lead end and a tool engagement end; a head formed at the tool engagement end of the shank; at least one male fastening thread formed on the exterior of the shank as a plurality of thread windings adapted to mate with a corresponding female fastening thread formed in an interior of a female fastener member; at least one male lead thread formed on the exterior of the shank at the lead end that is at least a half winding around the shank and comprises curved profile defined by an arc having a radius approximately equal to a radius of an arc that is tangent to both flanks of a thread profile of the at least one male fastening thread and below the pitch line of the at least one male fastener thread.
Claims36
A male anti-false thread fastener member comprising:
- a shank that has a lead end and a tool engagement end;
- a head formed at the tool engagement end of the shank;
- at least one male fastening thread formed on the exterior of the shank as a plurality of thread windings adapted to mate with a corresponding female fastening thread formed in an interior of a female fastener member;
- at least one male lead thread formed on the exterior of the shank at the lead end that is at least a half winding around the shank and comprises curved profile defined by an arc having a radius approximately equal to a radius of an arc that is tangent to both flanks of a thread profile of the at least one male fastening thread and below the pitch line of the at least one male fastener thread.
A male anti-false thread fastener member comprising:
- a shank that has a lead end and a tool engagement end;
- a head formed at the tool engagement end of the shank;
- at least one male fastening thread formed on the exterior of the shank as a plurality of thread windings adapted to mate with a corresponding fastening thread formed in an interior of a female fastener member;
- at least one male lead thread formed on the exterior of the shank at the lead end that is at least a half winding around the shank and is shortest at a beginning end of the male lead thread winding and tallest at the other end of the male lead thread winding, wherein the at least one male lead thread comprises a crest that has a height that changes at a substantially constant rate between the ends of the male lead thread winding, and wherein the male lead thread comprises a male lead thread flank that is anchored to the root of an adjacent thread winding along the entire length of the male lead thread.
A male anti-false thread fastener member comprising:
- a shank that has a lead end and a tool engagement end;
- a head formed at the tool engagement end of the shank;
- at least one male fastening thread formed on the exterior of the shank as a plurality of thread windings adapted to mate with a female fastening thread formed in an interior of a female fastener member;
- at least one male lead thread formed on the exterior of the shank at the lead end that is at least a half winding around the shank, wherein the at least one male lead thread is shortest at a beginning end of the male lead thread winding and tallest at the other end of the male lead thread winding, wherein the male lead thread comprises a profile that has a height and shape adapted to resist false threading into a groove at the crest of a female lead thread in the interior of a female fastener member.
Dependencies are inferred from the claim text.