US 12,297,566 B2
Spring element for upper nipper of a combing machine
Bodo Lindinger, Zimmern (DE); and Ueli Stutz, Winterthur (CH)
Assigned to Maschinenfabrik Rieter AG, Winterthur (CH)
Filed by Maschinenfabrik Rieter AG, Winterthur (CH)
Filed on Mar. 31, 2022, as Appl. No. 17/709,643.
Claims priority of application No. 00661/21 (CH), filed on Jun. 7, 2021.
Prior Publication US 2022/0389625 A1, Dec. 8, 2022
Int. Cl. D01G 19/16 (2006.01); D01G 19/10 (2006.01)
CPC D01G 19/16 (2013.01) [D01G 19/10 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A spring element for an upper nipper of a combing machine, comprising:
a longitudinal axis;
a first element comprising a through opening arranged transversely to the longitudinal axis for fastening to an axle, the first element further comprising a bore running in the longitudinal axis;
a second element comprising an internal thread in along the longitudinal axis defined in an end side of the second element facing away from the first element, the second element further comprising a guide opening arranged in along the longitudinal axis adjacent to the internal thread with an opening width and a passage opening arranged in the longitudinal axis on a side of the guide opening facing away from the internal thread such that the guide opening is sandwiched along the longitudinal axis between the internal thread and the passage opening;
the passage opening having a width that is less than the opening width of the guide opening;
a compression spring arranged in the longitudinal axis between the first element and the second element;
a connecting element held stationary in the longitudinal axis in the bore of the first element and projecting through the passage opening of the second element into the guide opening of the second element, the connecting element having a larger diameter on a side of the second element opposite the first element than a diameter of the passage opening;
the first element comprising a tubular lug arranged in a longitudinal direction of the spring element and surrounding and partially overlapping the compression spring;
the second element comprising a sleeve surrounding and overlapping the compression spring and the lug of the first element; and
a seal between the sleeve and the lug, wherein the seal is held in a groove defined in the sleeve or the lug.