Injection molding and casting of materials using a vertical injection molding system
US-9457399-B2 · Oct 4, 2016 · US
Replaceable piston ring for die casting machine plunger
US9962761B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9962761-B2 |
| Application number | US-201415035319-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 29, 2014 |
| Priority date | Nov 25, 2013 |
| Publication date | May 8, 2018 |
| Grant date | May 8, 2018 |
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- Title
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- Abstract
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- Assignees and inventors
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- First independent claim
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Abstract
Official abstract text for this publication.
A plunger assembly for a die casting machine shot sleeve includes a plunger body that has an outer diameter. The plunger includes a head that provides a wall. A piston ring is arranged on the plunger body adjacent to the wall. A nut is secured to the outer diameter and urges the piston ring toward the wall to retain the piston ring securely on the plunger body.
First claim
Opening claim text (preview).
What is claimed is: 1. A plunger assembly for a die casting machine shot sleeve, the plunger assembly comprising: a plunger body having an outer diameter, the plunger includes a head that provides a wall; a piston ring is arranged on the plunger body adjacent to the wall; a nut is secured to the outer diameter and urges the piston ring toward the wall to retain the piston ring securely on the plunger body; and a rod secured to the outer diameter, the rod includes an end that is axially spaced from the nut on a side of the nut opposite the head to provide an axial gap between the rod and the nut without transferring loads from the rod to the piston ring via the nut. 2. The plunger assembly according to claim 1 , wherein the plunger body extends along an axis, the wall is perpendicular to the axis, and the piston ring abuts the wall. 3. The plunger assembly according to claim 1 , wherein the piston ring includes an unthreaded inner diameter in an interference fit with the outer diameter. 4. The plunger assembly according to claim 1 , wherein the piston ring includes a threaded inner diameter in threaded engagement with the outer diameter. 5. The plunger assembly according to claim 1 , comprising a spring element provided axially between the piston ring and the nut. 6. The plunger assembly according to claim 5 , wherein the spring element includes at least one Belleville washer.
Assignees
Inventors
Classifications
Nozzles or shot sleeves · CPC title
- B22D17/203Primary
Injection pistons (B22D17/2053 takes precedence; for plastics B29C45/53) · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9962761B2 cover?
- A plunger assembly for a die casting machine shot sleeve includes a plunger body that has an outer diameter. The plunger includes a head that provides a wall. A piston ring is arranged on the plunger body adjacent to the wall. A nut is secured to the outer diameter and urges the piston ring toward the wall to retain the piston ring securely on the plunger body.
- Who is the assignee on this patent?
- United Technologies Corp, Pratt & Whitney Services Pte Ltd
- What technology area does this patent fall under?
- Primary CPC classification B22D17/203. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue May 08 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).