Drive device

a technology of driving device and drive shaft, which is applied in the direction of dynamo-electric machines, electric/electrostrictive devices, electric apparatus, etc., can solve problems such as restricting the application field, and achieve the effect of large stroke and large for
US20010020788A1Inactive Publication Date: 2001-09-13FESTO AG & CO KG
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
FESTO AG & CO KG
Publication Date
2001-09-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

A drive device comprising at least one drive unit having two mutually spaced apart pressing bodies. On the pressing bodies mutual facing pressing faces are provided diverging in a drive direction and having between them a stroke unit engaging the pressing faces of both pressing bodies. Furthermore drive means are present by means of which a drawing together of the pressing bodies may be caused and, as a result of this a displacement of the stroke unit in the drive direction along the pressing faces for the purpose of producing a drive movement able to be externally employed.
Need to check novelty before this filing date? Find Prior Art

Description

[0001] The invention relates to a drive device or transmission, which may for example be employed in the pneumatic equipment sector as a valve drive.THE PRIOR ART

[0002] In connection with valves serving for the control of fluid flows in the pneumatic equipment sector so far as a rule valve drives have been utilized, which are constituted by electromagnets or piezoelectric transducers. While being suitable for the transmission of large forces such drives generally only perform a drive movement with relatively small force strokes. Furthermore, there are design limitations as regards presetting the force-stroke characteristic, this restricting the field of application.SHORT SUMMARY OF THE INVENTION

[0003] One object of the invention is to create a drive device whose characteristics are able to be varied using comparatively simple means and which in case of need renders possible performing drive movements with a large force and simultaneously a large stroke.

[0004] In order to achieve the...

Claims

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