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US 12,214,435 B2Granted
Bottoming tap and chaser and method of use
OwnerDevin Corbit, Damon Kuhninventors
Life of this patent
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Abstract
A tap and chaser are provided each having a cylindrical tool receiver connected to a threading section by a shaft. The receiver and shaft are of diameters sufficiently small to enter the bore hole and distribute any off axis load onto a number of internal threads of the bore hole to dissipate loading. The threaded section includes a group of longitudinal flutes. Each of the lands of the threaded section includes a novel cutting face, tooth angle and rake angle to advantageously allow for threading deep blind holes.
Claims17
A tap comprising:
- a receiver, with a first diameter, having a drive socket, a longitudinal axis and a radial axis;
- a shaft section, with a second diameter, connected to the receiver, coaxial with the longitudinal axis;
- a threading section, connected to the shaft section, coaxial with the longitudinal axis;
- the threading section further comprising a set of longitudinal flutes with each longitudinal flute of the set of longitudinal flutes, forming a helix angle with the radial axis;
- the threading section further comprising a set of threads having a crest diameter and a root diameter;
- wherein the root diameter is greater than the first diameter and the second diameter;
- and
- wherein the receiver has a first length, the shaft section has a second length and the threading section has a third length;
- wherein a ratio of the first length to the second length to the third length is between 1:2:1±10% and 1:0.5:1±10%.
6 more elements
Dependencies are inferred from the claim text.