US 11,745,322 B2
Portable hand held power tool with interchangable head
John David Lefavour, Litchfield, NH (US); Thomas Romeo Faucher, Manchester, NH (US); Lawrence Brown, Allenstown, NH (US); Peter Matthew Wason, Manchester, NH (US); Bernard P. Vachon, Londonderry, NH (US); Sarah LaPerriere, Shelton, CT (US); and Mark A. Chiasson, Merrimack, NH (US)
Assigned to Hubbell Incorporated, Shelton, CT (US)
Filed by Hubbell Incorporated, Shelton, CT (US)
Filed on Jul. 19, 2022, as Appl. No. 17/867,809.
Application 17/867,809 is a continuation of application No. 16/201,551, filed on Nov. 27, 2018, granted, now 11,426,850.
Claims priority of provisional application 62/591,313, filed on Nov. 28, 2017.
Prior Publication US 2022/0347824 A1, Nov. 3, 2022
Int. Cl. B25B 27/14 (2006.01); H01R 43/042 (2006.01)
CPC B25B 27/146 (2013.01) [H01R 43/0427 (2013.01)] 5 Claims
OG exemplary drawing
 
1. Is amended as follows:
A hydraulic tool comprising:
a tool frame comprising a tool connecting portion; and
a tool head comprising a head connecting portion,
wherein engagement of the tool connecting portion with the head connecting portion removably connects the tool head with the tool frame, and
wherein the tool connecting portion comprises:
a cylinder;
a rotatable collar around the cylinder, wherein the collar comprises a plurality of slots on an inner surface of the collar angled with respect to an axis of rotation of the collar; and
one or more pins extending through a side of the cylinder, wherein the pins each comprise an extension extending from a surface of the pin, wherein the extensions slidably engage respective ones of the slots of the collar, wherein a rotation of the collar in a first direction causes the pins to move into an interior of the cylinder and a rotation in a second direction causes the pins to move out from the interior of the cylinder, and
wherein the head connecting portion comprises:
a shaft disposed at the proximal end of the tool head and sized to fit into the cylinder; and
one or more engagement surfaces on the outer surface of the shaft,
wherein when the pins are moved into the interior of the cylinder the pins engage with the one or more engagement surfaces,
further comprising a torsion spring connected with the collar and adapted to bias the collar in the first direction or the second direction,
wherein the one or more engagement surfaces comprises a plurality of holes on the outer surface of the shaft positioned to correspond to respective ones of the pins when the tool connecting portion with the head connecting portion are engaged.