US 12,109,763 B2
Laser welding plastic segments
Joel C. Johnson, Franklin, VA (US); Takeshi Mochida, Newport News, VA (US); and Terry Speed, Toano, VA (US)
Assigned to Canon Virginia, Inc., Newport News, VA (US)
Appl. No. 17/632,041
Filed by CANON VIRGINIA, INC., Newport News, VA (US)
PCT Filed Jul. 27, 2020, PCT No. PCT/US2020/043757
§ 371(c)(1), (2) Date Feb. 1, 2022,
PCT Pub. No. WO2021/025889, PCT Pub. Date Feb. 11, 2021.
Claims priority of provisional application 62/882,264, filed on Aug. 2, 2019.
Prior Publication US 2022/0274344 A1, Sep. 1, 2022
Int. Cl. B29C 65/16 (2006.01); B29C 33/00 (2006.01); B29C 33/38 (2006.01); B29C 65/00 (2006.01); B29K 25/00 (2006.01); B29L 31/00 (2006.01)
CPC B29C 65/1632 (2013.01) [B29C 33/0016 (2013.01); B29C 33/3807 (2013.01); B29C 33/3842 (2013.01); B29C 65/1603 (2013.01); B29C 65/1612 (2013.01); B29C 65/1616 (2013.01); B29C 65/1648 (2013.01); B29C 65/1661 (2013.01); B29C 66/1142 (2013.01); B29C 66/32 (2013.01); B29C 66/326 (2013.01); B29C 66/328 (2013.01); B29C 66/739 (2013.01); B29C 66/7392 (2013.01); B29C 66/73921 (2013.01); B29K 2025/06 (2013.01); B29K 2825/06 (2013.01); B29K 2995/0094 (2013.01); B29L 2031/757 (2013.01)] 13 Claims
OG exemplary drawing
 
1. At least two resin parts to be assembled by a laser welding process for creating a resin mold for a lost-wax casting process, the at least two resin parts comprising:
a first resin part including:
a top surface;
a side surface; and
an edge portion between the top surface and the side surface, wherein the edge portion includes a protruding portion protruding outwardly from the top surface, and
a second resin part including:
a top surface;
a side surface to be mated with the side surface of the first resin part; and
an edge portion, between the top surface of the second resin part and the side surface of the second resin part, wherein the edge portion of the second resin part includes a protruding portion protruding outwardly from the top surface of the second resin part, wherein the protruding portion of the second resin part is mated with the protruding portion of the first resin part to form a single bump with a seam line on a continuous surface of the single bump, and wherein the single bump protrudes outwardly from the top surface of the first resin part and the top surface of the second resin part,
wherein a dimension of a weld seam between the first resin part and the second resin part is defined by at least a weld angle with a range of 15 to 75 degrees.