US 12,438,323 B2
Dual action hydraulic piston assembly
Cameron Michael-Daniel Torrey, Lancaster, NH (US); Robert Michael Poirier, Bedford, NH (US); Michael Anthony Guarrera, Amherst, NH (US); Luke John Desmarais, Milan, NH (US); and Thomas Romeo Faucher, Manchester, NH (US)
Assigned to HUBBELL INCORPORATED, Shelton, CT (US)
Filed by Hubbell Incorporated, Shelton, CT (US)
Filed on Jun. 26, 2023, as Appl. No. 18/341,291.
Application 18/341,291 is a division of application No. 16/428,252, filed on May 31, 2019, granted, now 11,728,608.
Claims priority of provisional application 62/692,983, filed on Jul. 2, 2018.
Prior Publication US 2023/0335963 A1, Oct. 19, 2023
Int. Cl. H01R 43/042 (2006.01); B23D 15/14 (2006.01); B25F 5/00 (2006.01); A01G 3/02 (2006.01); B23D 21/06 (2006.01); B66F 3/28 (2006.01)
CPC H01R 43/0421 (2013.01) [B23D 15/14 (2013.01); B25F 5/005 (2013.01); H01R 43/0427 (2013.01); A01G 2003/023 (2013.01); B23D 21/06 (2013.01); B66F 3/28 (2013.01); H01R 43/0428 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A dual action hydraulic piston assembly, comprising:
a cylinder having first and second inlet ports on a proximal end and an outlet port on a distal end;
a conduit connected to the first inlet port and extending into the cylinder;
an inner ram slidable along an outer surface of the conduit; and
an outer ram slidable between an outer surface of the inner ram and an inner surface of the cylinder,
a proximal fluid space around the conduit between the proximal end of the cylinder and proximal ends of the inner ram and the outer ram,
a distal fluid space between the distal end of the cylinder and distal ends of the inner ram and the outer ram, the distal fluid space being separate from the proximal fluid space,
wherein the inner ram and the outer ram are configured to move together toward the distal end of the cylinder, in response to a first fluid being displaced via the first inlet port into the conduit, to displace a second fluid in the distal fluid space through the outlet port at a first flow rate, and
wherein the outer ram is configured to move toward the distal end of the cylinder, in response to a third fluid being displaced via the second inlet port into the proximal fluid space, to displace the second fluid in the distal fluid space through the outlet port at a second flow rate.