Drive device and method of controlling the same
US-2024392530-A1 · Nov 28, 2024 · US
Hybrid-type construction machine
US8948944B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8948944-B2 |
| Application number | US-201013575378-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 29, 2010 |
| Priority date | Jan 29, 2010 |
| Publication date | Feb 3, 2015 |
| Grant date | Feb 3, 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 hybrid-type construction machine includes: an engine to drive a variable-volume-type hydraulic pump; a plurality of hydraulic actuators driven by a hydraulic pressure from the variable-volume-type hydraulic pump; and a motor generator driven by an electric power from an electric power accumulator to assist the engine. A maximum output of the variable-volume-type hydraulic pump is equal to or larger than a maximum output of the engine. When operating by setting an output of the variable-volume-type hydraulic pump larger than the maximum output of the engine, the engine is assisted by the motor generator.
First claim
Opening claim text (preview).
The invention claimed is: 1. A hybrid-type construction machine, comprising: an engine to drive a variable-volume-type hydraulic pump; a plurality of hydraulic actuators driven by a hydraulic pressure from the variable-volume-type hydraulic pump; and a motor generator driven by an electric power from an electric power accumulator to assist the engine, wherein a maximum output of said variable-volume-type hydraulic pump is equal to or larger than a maximum output of said engi…
Assignees
Inventors
Classifications
Mechanical Engineering · mapped topic
Operations & Transport · mapped topic
Fixed Constructions · mapped topic
Operations & Transport · mapped topic
Fixed Constructions · mapped topic
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 US8948944B2 cover?
- A hybrid-type construction machine includes: an engine to drive a variable-volume-type hydraulic pump; a plurality of hydraulic actuators driven by a hydraulic pressure from the variable-volume-type hydraulic pump; and a motor generator driven by an electric power from an electric power accumulator to assist the engine. A maximum output of the variable-volume-type hydraulic pump is equal to or …
- Who is the assignee on this patent?
- Kawashima Koji, Sumitomo Heavy Industries, Sumitomo Shi Constr Mach Co
- What technology area does this patent fall under?
- Primary CPC classification E02F9/22. Mapped technology areas include Fixed Constructions.
- When was this patent published?
- Publication date Tue Feb 03 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).