IP Library Granted Patent US 12,234,887
Granted Patent B1
US 12,234,887 · App. 17/324,954 · Granted Feb 25, 2025

High fatigue life detachable connector

Inventors: Nina Sverdlova (Castrop Rauxel, DE); Till Stukenberg (Bochum, DE)
Assignee: The Crosby Group LLC
F16G15/04F16G15/12
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Quick Facts
Patent No.
US 12,234,887
App. No.
17/324,954
Granted
Feb 25, 2025
Kind
B1
Abstract

A high fatigue life detachable connector. The connector includes two J-shaped elements configured to be coupled to each other with a coupling element therebetween. Each of the J-shaped elements has a shorter leg and an opposed longer leg with the legs drawn together by a bow. Each bow has a top cross-section which transitions to a pair of opposed mid cross-sections 45 degrees from the top cross-section, and which thereafter transitions to a pair of opposed joiner cross-sections 90 degrees from the top cross-section, wherein the top cross-section has a substantially flat top exterior and an opposed radiused interior, resulting in optimized material utilization and structural integrity.

Claims (13)

1. An improved fatigue life detachable connector, which comprises:

two J-shaped elements configured to be coupled to each other with a coupling element therebetween;

each of said J-shaped elements having a shorter leg and an opposed longer leg, with said shorter and longer legs joined together by a bow extending one-hundred eighty degrees (180°); and

each said bow having a top cross-section, which transitions to a pair of opposed mid cross-sections forty-five degrees (45°) from said top cross-section, and which transitions to a pair of opposed joiner cross-sections ninety degrees (90°) from said top cross-section, wherein said top cross-section has a substantially flat top exterior and an opposed radiused interior;

wherein each said pair of opposed mid cross-sections of said bow is substantially in the shape of either:

an isosceles triangle with a flattened base at the interior and a rounded apex at the exterior, or

an isosceles trapezoid with a flattened long base at the interior and a rounded base at the exterior.

2. The improved fatigue life detachable connector as set forth in claim 1 wherein each said shorter leg includes external toothing.

3. The improved fatigue life detachable connector as set forth in claim 1 wherein said two J-shaped elements are substantially identical to each other.

4. The improved fatigue life detachable connector as set forth in claim 1 wherein each said longer leg includes internal toothing.

5. The improved fatigue life detachable connector as set forth in claim 1 wherein an inner side of each shorter leg includes a protrusion which mates with a recess on said coupling element.

6. The improved fatigue life detachable connector as set forth in claim 1 wherein an inner side of each longer leg includes a protrusion which mates with a recess on said coupling element.

7. The improved fatigue life detachable connector as set forth in claim 1 wherein said coupling element includes a transverse borehole which receives two locking pins and a threaded borehole perpendicular to said transverse borehole which receives a spreader element.

Assignments (3)
SECURITY INTEREST Recorded Feb 3, 2026
From: COLUMBUS MCKINNON CORPORATION; MAGNETEK, INC.; DORNER MFG. CORP.; HARRINGTON HOISTS, INC.; PEERLESS CHAIN COMPANY; THE CROSBY GROUP LLC
To: JPMORGAN CHASE BANK, N.A.
Reel/Frame 074622/0233 →
SECURITY INTEREST Recorded Feb 3, 2026
From: COLUMBUS MCKINNON CORPORATION; MAGNETEK, INC.; DORNER MFG. CORP.; HARRINGTON HOISTS, INC.; PEERLESS CHAIN COMPANY; THE CROSBY GROUP LLC
To: WILMINGTON TRUST, NATIONAL ASSOCIATION
Reel/Frame 074622/0922 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 19, 2021
From: SVERDLOVA, NINA; STUKENBERG, TILL
To: THE CROSBY GROUP LLC
Reel/Frame 056292/0410 →
Continuity (1)
Provisional Application 63027384 · May 20, 2020
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