Power shovel hoist machinery with auxiliary weight box
US-2015308266-A1 · Oct 29, 2015 · US
Hydraulic cylinder with guide bushing for a sliding dipper handle of a power shovel
US8992157B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8992157-B2 |
| Application number | US-200913318599-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 28, 2009 |
| Priority date | May 28, 2009 |
| Publication date | Mar 31, 2015 |
| Grant date | Mar 31, 2015 |
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 crowd assembly ( 30 ) for a power shovel ( 10 ) includes a saddle block ( 34 ) adapted for pivotal connection to the shovel boom ( 24 ). A tubular dipper handle ( 32 ) is slideably supported by the saddle block. A hydraulic actuator ( 50 ) has a cylinder ( 52 ) and a piston rod ( 54 ) that is outwardly extendable from one end of the cylinder. One of the cylinder or the piston rod is fixed to the dipper handle and the other one is attached to the saddle block. The cylinder and the piston rod are within the tubular dipper handle which is able to slide longitudinally over the cylinder. A guide bushing ( 70 ) extends around the one end of the cylinder and engages an interior surface of the dipper handle. The guide bushing thereby supports that end of the cylinder and inhibits hydraulic actuator from deflecting within the dipper handle when the piston rod is extended from the cylinder.
First claim
Opening claim text (preview).
The invention claimed is: 1. A crowd assembly for a power shovel that has a boom, the crowd assembly comprising: a saddle block adapted for pivotal connection to the boom; a tubular dipper handle supported by and slideable relative to the saddle block; a hydraulic actuator having a cylinder and a piston rod that is extendable from one end of the cylinder, one of the cylinder and the piston rod is fixed to the dipper handle and the other of the cylinder and the piston rod is st…
Assignees
Inventors
Classifications
Patent family
Related publications grouped by family.
External sources
Next steps
Free tools are coming soon. Tell us what you want to track and we'll notify you.
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US8992157B2 cover?
- A crowd assembly ( 30 ) for a power shovel ( 10 ) includes a saddle block ( 34 ) adapted for pivotal connection to the shovel boom ( 24 ). A tubular dipper handle ( 32 ) is slideably supported by the saddle block. A hydraulic actuator ( 50 ) has a cylinder ( 52 ) and a piston rod ( 54 ) that is outwardly extendable from one end of the cylinder. One of the cylinder or the piston rod is fixed to …
- Who is the assignee on this patent?
- Gilmore Carl D, Caterpillar Global Mining Llc
- What technology area does this patent fall under?
- Primary CPC classification E02F3/304. Mapped technology areas include Fixed Constructions.
- When was this patent published?
- Publication date Tue Mar 31 2015 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).