Axial field rotary energy device having pcb stator and variable frequency drive
US-2024429765-A1 · Dec 26, 2024 · US
Hand-power tool
US10326399B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10326399-B2 |
| Application number | US-201214125556-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 26, 2012 |
| Priority date | Jun 14, 2011 |
| Publication date | Jun 18, 2019 |
| Grant date | Jun 18, 2019 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A hand-power tool includes at least one tool spindle and a drive unit configured to drive the tool spindle at a rotational speed greater than 10,000 min−1. The drive unit has a brushless electric motor.
First claim
Opening claim text (preview).
The invention claimed is: 1. A hand-held power tool, comprising: at least one tool spindle defining a first axis of rotation; and a drive unit connected in a gearless fashion to the at least one tool spindle and configured to drive the at least one tool spindle at a rotational speed higher than 10,000 rotations per minute, the drive unit including a brushless electric motor defining a second axis of rotation that is coaxial with the first axis of rotation. 2. The hand-held power tool as claimed in claim 1 , wherein, in at least one operating state, the drive unit takes up a direct voltage configured to supply the electric motor. 3. The hand-held power tool as claimed in claim 2 , wherein the drive unit has an electronic commutator configured to convert the direct voltage at least into one alternating voltage. 4. The hand-held power tool as claimed in claim 3 , wherein the commutator is configured to convert the direct voltage into an alternating voltage as a function of a rotational speed. 5. The hand-held power tool as claimed in claim 1 , wherein the electric motor has an internal rotor. 6. The hand-held power tool as claimed in claim 1 , wherein the drive unit is configured to brake a rotor of the electric motor. 7. The hand-held power tool as claimed in claim 1 , wherein the drive unit has a maximum power between 15 watts and 150 watts. 8. The hand-held power tool as claimed in claim 1 , further comprising a lithium-based accumulator configured to supply the drive unit with electrical energy. 9. The hand-held power tool as claimed in claim 1 , further comprising a hose coupling connecting the drive unit to the tool spindle, the hose coupling having a rubber-elastic structure.
Assignees
Inventors
Classifications
- H02P27/06Primary
using DC to AC converters or inverters (H02P27/05 takes precedence) · CPC title
with friction brakes · CPC title
Hand-held machine tool · CPC title
- B25F5/00Primary
Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for · CPC title
Drive circuits, e.g. power electronics (H02K11/38 takes precedence) · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US10326399B2 cover?
- A hand-power tool includes at least one tool spindle and a drive unit configured to drive the tool spindle at a rotational speed greater than 10,000 min−1. The drive unit has a brushless electric motor.
- Who is the assignee on this patent?
- Hirschburger Wolfgang, Bosch Gmbh Robert
- What technology area does this patent fall under?
- Primary CPC classification H02P27/06. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jun 18 2019 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).