US 12,258,717 B2
Rail anchoring spike
David M. Barry, Greenwood, MN (US); and Jeremy W. Soden, Rocky Ford, CO (US)
Assigned to Lewis Bolt & Nut Company, LaJunta, CO (US)
Filed by Lewis Bolt & Nut Company, Wayzata, MN (US)
Filed on Mar. 26, 2024, as Appl. No. 18/616,885.
Application 18/616,885 is a continuation of application No. 17/025,411, filed on Sep. 18, 2020, granted, now 12,006,638.
Claims priority of provisional application 62/902,008, filed on Sep. 18, 2019.
Prior Publication US 2024/0229366 A1, Jul. 11, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. E01B 9/06 (2006.01); E01B 9/10 (2006.01); E01B 13/02 (2006.01)
CPC E01B 9/06 (2013.01) [E01B 9/10 (2013.01); E01B 13/02 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A rail anchoring spike for fastening metal to a tie, the spike comprising:
a head; and
a shank extending axially from the head, the shank being adapted to engage the tie, the shank comprising:
a plurality of helical, generally parallel threads extending over a threaded portion of the shank and running from the head to a tapered tip; and
a plurality of barbs positioned in the threaded portion, each of the barbs: (i) having a starting point and a barb body extending along a length from the starting point to a barbed end that has a substantially triangular cross-sectional shape, and (ii) being positioned substantially centrally in a valley defined between a pair of threads,
wherein the length of the barb body is greater than a maximum width of the substantially triangular cross-sectional shape of the barbed end, and
wherein the length of the barb body extends generally parallel to the threads.