Patent ID: 11904375
Assignee: nan
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. An elongated fastener device for enabling the securement of a first thin plate (12) and a second thicker plate (14) together, the elongated device consisting of three portions of generally equal length, an upper portion (A), a middle portion (B) and a lower portion (C);
wherein the upper portion (A) of the elongated fastener device consists of a smooth conical side surface, which is tapered at an angle (T) of between 7° to 14° with respect to a longitudinal axis (L) of the elongated fastener device, the smooth conical surface having a lower end ending at a first transition perimeter (212) of a first strain relief channel (214);
wherein the middle portion (B) of the elongated fastener device consists of the first strain relief channel (214), a second transition perimeter (216) of a smaller diameter than the first transition perimeter (212), the middle portion extending a length along the longitudinal axis is cylindrically shaped and has a diameter equal to the diameter of the second transition perimeter (216) of the first strain relief channel (214), and the second transition perimeter (216) extends from a juncture (J) defined by an abutting arrangement of the first thin plate and the second thicker plate and into a bore (42) of a second thicker plate (14), the middle portion (B) of the elongated fastener device distally ending at a first transition perimeter (238) of a second strain relief channel (232); and
wherein the lower portion (C) of the elongated fastener device consists of a second strain relief channel (232) defined by an uppermost first transition perimeter (238) and a lowermost second transition perimeter (236) with a threaded section (220) extending from the lowermost second perimeter to a distalmost end (240) of the elongated fastener device; and
wherein a tool receiving bore (142) extends into the threaded section of the lower third portion (C) of the elongated fastener device, and a tool receiving bore (222) extends into the first upper portion (A) of the elongated fastener device, the enable a tool driven rotational engagement with the first thin plate (12) and the second thicker plate (14).