US 12,434,364 B2
Cylinder assembly for gas spring fastener driver
Edward Pomeroy, Piedmont, SC (US); Zachary Scott, Easley, SC (US); John Schnell, Anderson, SC (US); and Essan Namouz, Greenville, SC (US)
Assigned to Techtronic Power Tools Technology Limited, Tortola (VG)
Filed by Techtronic Power Tools Technology Limited, Tortola (VG)
Filed on May 16, 2023, as Appl. No. 18/318,083.
Application 18/318,083 is a continuation of application No. 16/824,131, filed on Mar. 19, 2020, granted, now 11,679,478.
Application 16/824,131 is a continuation of application No. 15/807,727, filed on Nov. 9, 2017, granted, now 10,632,600, issued on Apr. 28, 2020.
Claims priority of provisional application 62/419,801, filed on Nov. 9, 2016.
Prior Publication US 2023/0286123 A1, Sep. 14, 2023
Int. Cl. B25C 1/04 (2006.01); B25C 1/00 (2006.01); B25C 1/06 (2006.01)
CPC B25C 1/008 (2013.01) [B25C 1/04 (2013.01); B25C 1/047 (2013.01); B25C 1/06 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method of manufacturing a fastener driving device including a pressure vessel, the method comprising:
forming an outer cylinder including an annular wall;
positioning an inner cylinder within the outer cylinder; and
deforming the annular wall of the outer cylinder radially inward to engage a groove defined by the inner cylinder to retain the inner cylinder within the outer cylinder and form the pressure vessel.