Invention Grant
- Patent Title: Additively manufactured elliptical bifurcating torsion spring
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Application No.: US17017218Application Date: 2020-09-10
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Publication No.: US11852211B2Publication Date: 2023-12-26
- Inventor: Benjamin K. Campbell , Robert Chadbourne , Ryan Dippel , Michael J. Shaw
- Applicant: BAE SYSTEMS Information and Electronic Systems Integration Inc.
- Applicant Address: US NH Nashua
- Assignee: BAE Systems Information and Electronic Systems Integration Inc.
- Current Assignee: BAE Systems Information and Electronic Systems Integration Inc.
- Current Assignee Address: US NH Nashua
- Agency: Maine Cernota & Curran
- Agent Gary McFaline; Scott J. Asmus
- Main IPC: F16F1/10
- IPC: F16F1/10 ; F16F1/04 ; F16F1/02 ; B33Y80/00

Abstract:
A 3D printed additively manufactured (AM) elliptical bifurcating torsion flexure assembly system includes a base section; elliptical bifurcating torsion springs, each including a bifurcated legs section supported by the base; a bifurcated elliptical torsion spring section contiguous with the bifurcated legs section; and a single upper section contiguous with the elliptical torsion spring section. The single upper section includes a connection component, and the device material includes Hot Isostatic Pressing (HIP) heat-treated Ti6Al4V. The elliptical bifurcating torsion flexure assembly is printed as one part by a 3D additive manufacturing process, and the bifurcation maintains consistent balance while being torqued. The stiffness-spring rate of the device is at least partly controlled by varying cross-sectional shape and diameters by the 3D additive manufacturing printing.
Public/Granted literature
- US20220074458A1 ADDITIVELY MANUFACTURED ELLIPTICAL BIFURCATING TORSION SPRING Public/Granted day:2022-03-10
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