US 12,011,893 B2
Composite ball screw
William Pollitt, Kenilworth (GB); and Konrad Wilder, Rock Hill, SC (US)
Assigned to CROMPTON TECHNOLOGY GROUP LIMITED, Solihull (GB)
Filed by Crompton Technology Group Limited, Solihull (GB)
Filed on May 21, 2021, as Appl. No. 17/326,562.
Application 17/326,562 is a division of application No. 16/034,437, filed on Jul. 13, 2018, granted, now 11,041,552.
Claims priority of application No. 17275109 (EP), filed on Jul. 14, 2017.
Prior Publication US 2021/0270352 A1, Sep. 2, 2021
Int. Cl. B29D 1/00 (2006.01); B29C 53/58 (2006.01); B32B 1/00 (2006.01); B32B 3/30 (2006.01); B32B 5/02 (2006.01); B32B 5/26 (2006.01); B32B 37/24 (2006.01); F16C 3/02 (2006.01); F16H 25/22 (2006.01); F16H 25/24 (2006.01)
CPC B29D 1/005 (2013.01) [B29C 53/586 (2013.01); B32B 1/00 (2013.01); B32B 3/30 (2013.01); B32B 5/02 (2013.01); B32B 5/26 (2013.01); B32B 37/24 (2013.01); F16C 3/026 (2013.01); F16H 25/2204 (2013.01); F16H 25/24 (2013.01); B32B 2305/10 (2013.01); B32B 2307/54 (2013.01); B32B 2605/18 (2013.01); F16C 2220/28 (2013.01); F16H 2025/249 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A method of forming a threaded ball screw shaft comprising:
winding fibres onto an outer surface of a mandrel so as to form a base layer of fibre reinforced polymer material onto an outer surface of a mandrel;
winding a plurality of helical fibres around the base layer in the same rotational sense and in a group so as to form a helical ridge on the base layer; and
winding fibres around the helical ridge and base layer so as to form an outer layer of fibre-reinforced polymer material.