Method for remanufacturing fluid end block
US-10677240-B2 · Jun 9, 2020 · US
Insert and method for manufacturing fluid pump
US12492687B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12492687-B2 |
| Application number | US-202318454596-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 23, 2023 |
| Priority date | Aug 23, 2023 |
| Publication date | Dec 9, 2025 |
| Grant date | Dec 9, 2025 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A cylinder block for a fluid pump includes a cylindrical body having a hub bore and a plurality of cylinder bores arranged about the hub bore, a hub insert disposed in the hub bore, and an anti-rotation body configured to prevent rotation of the hub insert relative to the cylindrical body. The cylindrical body and the hub insert together define a channel in which the anti-rotation body is inserted.
First claim
Opening claim text (preview).
What is claimed is: 1 . A cylinder block for a fluid pump, the cylinder block comprising: a cylindrical body having a hub bore and a plurality of cylinder bores arranged about the hub bore; a hub insert disposed in the hub bore, the hub insert comprising a shaft bore having internal splines; and an anti-rotation body configured to prevent rotation of the hub insert relative to the cylindrical body, wherein the cylindrical body and the hub insert together define a channel in which the anti-rotation body is inserted. 2 . The cylinder block of claim 1 , wherein the anti-rotation body comprises a pin extending parallel to the hub bore, and wherein the channel comprises a circular bore for receiving the pin, the circular bore having a first partial channel defined in the cylindrical body and a second partial channel defined in the hub insert. 3 . The cylinder block of claim 1 , wherein the hub insert comprises a generally cylindrical hub body. 4 . The cylinder block of claim 1 , wherein the hub bore defines a shoulder within the cylindrical body, and wherein the hub insert engages the shoulder to axially locate the hub insert in the hub bore. 5 . The cylinder block of claim 1 , wherein the hub insert forms an interference fit with the hub bore. 6 . The cylinder block of claim 1 , where in the channel comprises a counterbore extending into a proximal end of the cylindrical body and a proximal end of the hub insert. 7 . The cylinder block of claim 1 , wherein the anti-rotation body is located substantially equidistant between two cylinder bores as measured along a circumference of the hub bore. 8 . The cylinder block of claim 1 , wherein the channel is one of a plurality of channels equally spaced along the hub insert; and wherein the anti-rotation body is one of a plurality of anti-rotation bodies respectively inserted into the plurality of channels. 9 . The cylinder block of claim 1 , wherein the hub insert comprises at least one recess extending into a proximal end of the hub insert. 10 . The cylinder block of claim 1 , wherein a proximal end of the hub insert extends beyond a proximal end of the cylindrical body. 11 . A cylinder block for a fluid pump, the cylinder block comprising: a cylindrical body having a hub bore and a plurality of cylinder bores arranged about the hub bore; a hub insert disposed in the hub bore and configured to receive a shaft; and an anti-rotation body configured to prevent rotation of the hub insert relative to the cylindrical body, wherein the cylindrical body and the hub insert together define a channel between a radially outer surface of the hub insert and a radially inner surface of the cylindrical body in which the anti-rotation body is inserted. 12 . The cylinder block of claim 11 , wherein the hub bore defines a shoulder within the cylindrical body, and wherein the hub insert engages the shoulder to axially locate the hub insert in the hub bore. 13 . The cylinder block of claim 11 , wherein the hub insert forms an interference fit with the hub bore. 14 . The cylinder block of claim 11 , wherein the channel comprises a counterbore extending into a proximal end of the cylindrical body and a proximal end of the hub insert. 15 . The cylinder block of claim 11 , wherein the channel is one of a plurality of channels equally spaced along the hub insert; and wherein the anti-rotation body is one of a plurality of anti-rotation bodies respectively inserted into the plurality of channels.
Assignees
Inventors
Classifications
Cylinder barrel · CPC title
having rotary cylinder block · CPC title
Pistons or cylinders · CPC title
- F04B1/2035Primary
Cylinder barrels · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US12492687B2 cover?
- A cylinder block for a fluid pump includes a cylindrical body having a hub bore and a plurality of cylinder bores arranged about the hub bore, a hub insert disposed in the hub bore, and an anti-rotation body configured to prevent rotation of the hub insert relative to the cylindrical body. The cylindrical body and the hub insert together define a channel in which the anti-rotation body is inser…
- Who is the assignee on this patent?
- Caterpillar Inc
- What technology area does this patent fall under?
- Primary CPC classification F04B1/2035. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Dec 09 2025 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).