US 11,633,773 B2 · Bodymaker and double action domer assembly with staged piston

Abstract

A domer station having a domer assembly, a housing assembly, and a stacked piston assembly is provided. The domer assembly is movably disposed within a domer body passage located in the housing assembly and structured to move between a forward, first position and a retracted, second position. The stacked piston assembly includes a plurality of pistons, preferably three pistons, disposed in series and a pressure supply. The pistons are disposed behind the domer in pressure chambers. The pistons have a constant pressure applied thereto and are biased towards the domer. The pistons are, however, each restrained by a stop and do not contact, or operatively engage, the domer when the domer is in the domer first position.

Claims20

Dependent claims

A method of forming a dome in a bottom of a cup-like member, said method comprising:

positioning said cup-like member into engagement with a domer body of a domer station, said domer station including a domer stacked piston assembly with a plurality of domer pistons;
and
incrementally applying pressure to a rearward side of said domer body by applying fluid pressure to the plurality of pistons of the domer stacked piston assembly, thereby biasing said domer body toward the cup-like member, whereby the bottom of said cup-like member is deformed.

Dependencies are inferred from the claim text.

Facts

Application

17/470,045Filed 9 Sep 2021 · continuation

Priority

21 Sep 2012

Published

US 2021/0402453 A130 Dec 2021

Granted

25 Apr 2023

Term ends

Not estimatedThe source records don’t support an estimate.

Classification6 codes

B21D 22/30
Deep-drawing: to finish articles formed by deep-drawing
B21D 22/22
Deep-drawing: with devices for holding the edge of the blanks
B21D 22/24
Deep-drawing: involving two drawing operations having effects in opposite directions with respect to the blank
B21D 22/26
Deep-drawing: for making peculiarly, e.g. irregularly, shaped articles

Family

Application13/623,894Parent of this continuation-in-part · filed 21 Sep 2012

Application15/412,426Parent of this continuation · filed 23 Jan 2017

US 9,550,222 B2Parent of this continuation-in-part · filed 24 Jan 2017

Application16/200,909Parent of this continuation · filed 27 Nov 2018

US 10,160,022 B2Parent of this continuation · filed 25 Dec 2018

US 2021/0402453 A1Pre-grant publication · published 30 Dec 2021

US 11,141,771 B2Parent of this continuation

Application15/412,426Parent of this continuation-in-part

US 2014/0083156 A1Published application

US 2017/0128999 A1Published application

US 2019/0091750 A1Published application

US 11,633,773 B2This patent

From the US filing history. Foreign family members aren’t listed.

Bodymaker and double action domer assembly with staged piston

Life of this patent

Bodymaker and double action domer assembly with staged piston

Life of this patent

Abstract

Claims20