US 12,257,653 B2
Internal clamping and welding device
Guy Bellanger, Boulogne-Billancourt (FR)
Assigned to SERIMAX HOLDINGS, Roissy en France (FR)
Appl. No. 17/281,486
Filed by SERIMAX HOLDINGS, Roissy en France (FR)
PCT Filed Oct. 1, 2019, PCT No. PCT/FR2019/052320
§ 371(c)(1), (2) Date Mar. 30, 2021,
PCT Pub. No. WO2020/070436, PCT Pub. Date Apr. 9, 2020.
Claims priority of application No. 1859132 (FR), filed on Oct. 2, 2018.
Prior Publication US 2021/0402526 A1, Dec. 30, 2021
Int. Cl. B23K 37/02 (2006.01); B23K 9/028 (2006.01); B23K 37/053 (2006.01); B23K 37/0531 (2025.01); B23K 101/10 (2006.01)
CPC B23K 37/0282 (2013.01) [B23K 9/0284 (2013.01); B23K 9/0286 (2013.01); B23K 37/0217 (2013.01); B23K 37/0276 (2013.01); B23K 37/0531 (2013.01); B23K 2101/10 (2018.08)] 17 Claims
OG exemplary drawing
 
1. An internal clamping and welding device for joining tubes by their distal ends, the device comprising:
a support including a first clamping means to cooperate with the inner surface of a first tube, and a second clamping means to cooperate with the inner surface of a second tube;
a welding head mounted to rotate about the support, so as to allow welding on at least a portion of the internal circumference of a junction area formed between the first tube and the second tube; and
a pivot such that the welding head is tiltable relative to the longitudinal axis of the device,
wherein the pivot is such that the welding head is rotated in a plane which is tiltable relative to a clamping plane of the first clamping means,
wherein the pivot is obtained by the cooperation between a female ball joint and a male ball joint of the support, the female ball joint being connected to a crown of the welding head,
wherein the female ball joint being in the shape of an open ring and the male ball joint in the shape of a closed ring, and
wherein the female ball joint is configured to rotate annularly about the male ball joint.