Control plate

Patent metadata

Field	Value
Publication number	US-9835246-B2
Application number	US-201314392044-A
Country	US
Kind code	B2
Filing date	Dec 2, 2013
Priority date	Nov 30, 2012
Publication date	Dec 5, 2017
Grant date	Dec 5, 2017

Abstract

The present invention relates to a control plate as it is for instance used in pneumatic or hydraulic controls. An example of such a control plate is a transmission control plate with which automatic transmissions are controlled hydraulically.

First claim

The invention claimed is:

1. A transmission control plate, comprising:
a single metallic layer with a first side and an opposite second side;
a first pattern of a polymer-based coating on said first side and a second, different pattern of said polymer-based coating on said second side, wherein each of said coatings is only a single layer each with their own uniform material construction;
wherein each polymer-based coating increases in a radial direction with increasing distance from a passage opening for a fastener element in said single metallic layer;
wherein said first pattern overlaps said second pattern on some plate areas but the two patterns do not overlap in other plate areas.

2. The transmission control plate of claim 1 , wherein the coating in two different areas on said single metallic layer shows an identical or an almost identical width.

3. The transmission control plate of claim 1 , wherein a thicknesses of the coating at the two different areas is different by at the most 10% of a width of the broader coating area or of a width of both coating areas.

4. The transmission control plate of claim 1 , wherein the metallic layer apart from the polymer-based coating applied to the surface of the metallic layer as a seal comprises no further seal including neither embossed beads nor profilings formed into the metallic layer.

5. The transmission control plate of claim 1 , wherein a continuous variation of a thickness of the polymer-based coating between two areas of different thickness within a continuously coated region is provided.

6. The transmission control plate of claim 1 , wherein a thickness is the height of the coating along a section through a central area of a continuously coated region, said central area having a distance of at least ≧30% of a minimum width of the polymer-based coating or of at least 0.8 mm towards adjacent edges of the polymer-based coating.

7. The transmission control plate of claim 1 , wherein a continuously coated region shows a variation of the thickness of the polymer-based coating by ≧12 μm on a distance of ≦20 mm.

8. The transmission control plate of claim 1 , wherein a continuously coated region shows a variation of the thickness of the polymer-based coating by ≧15 μm on a distance of ≦50 mm.

9. The transmission control plate of claim 1 , wherein a continuously coated region comprises a first partial region adjacent to the passage opening and a second partial region with a larger distance to the passage opening, where the second partial region shows no passage openings for fastening elements, where the polymer-based coating in the non-compressed state in the first partial region shows a thickness that is smaller than a thickness of the coating in the second partial region.

10. The transmission control plate of claim 9 , wherein the second partial region is distanced from any passage opening for a fastener element by at least one diameter of the respective passage opening.

11. The transmission control plate of claim 9 , wherein the polymer-based coating in the non-compressed state in the first partial region shows a thickness that is smaller by at least 50% than the thickness of the coating in the second partial region.

12. The transmission control plate of claim 1 , wherein the at least one surface of the metallic layer which surface extends parallel to the plane of the layer and is coated with the polymer-based coating is completely flat and shows neither local protrusions nor local depressions.

13. The transmission control plate of claim 1 , wherein the metallic layer has a sheet thickness of at least 0.5 mm and at the most 1.2 mm.

14. The transmission control plate of claim 1 , wherein the metallic layer is partially or completely coated on both of its surfaces, wherein the two coatings in a projection in a common plane coincide only in sections.

15. The transmission control plate of claim 1 , wherein the polymer-based coating is only a single layer coating.

16. The transmission control plate of claim 1 , wherein the polymer-based coating is a single layer of ≧10 μm thickness.

Assignees

• Reinz Dichtungs Gmbh

Inventors

• Blersch Robert
• Egloff Georg
• Claus Oliver
• Hibert Viktor
• Waldvogel Hans

Classifications

• F16H61/0009 Primary

  Hydraulic control units for transmission control, e.g. assembly of valve plates or valve units · CPC title

• Y10T74/20024

  Fluid actuator · CPC title

• F16J15/02

  between relatively-stationary surfaces (F16J15/46, F16J15/48 take precedence) · CPC title