# US 7,410,519 B1 · Sandwich filter block

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- Number: US 7,410,519 B1
- Document ID: US7410519B1
- Status: Granted
- Kind: B1
- Application number: 11/204,912
- Filed: 2005-08-16
- Granted: 2008-08-12
- Earliest claimed: 2005-08-16
- Inventors: Dieter H. Ewald
- Web page: https://patentgrep.com/patent/US7410519B1

## CPC

- F16K 27/003: {Housing formed from a plurality of the same valve elements}
- Y10T 137/794: With means for separating solid material from the fluid
- Y10T 137/87885: Sectional block structure
- F16K: VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING {(devices for emptying and evacuating the excess liquid in valves or conduits F16L55/07)}
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A sandwich filter device including a block body and an insert held in the block body. The insert and the block body each have a passage for gas flow through. Positioned across the insert passage is a filter for removing contaminants from a gas stream.

## Claims

### Claim 1

A passage block comprising:
a passage block body having an upper surface and a lower surface;
a first fluid pass through passage from the upper surface to the lower surface of the block body;
an insert retainer on the block body configured to have an upper surface substantially coplanar with the upper surface of the block body;
an insert held in the insert retainer configured to have a lower surface substantially coplanar with the lower surface of the block body;
a second fluid pass through passage on the insert and the insert retainer; and
a filter disposed between the insert retainer and the insert such that fluid passing through the second fluid pass through passage passes through the filter.

### Claim 2 (depends on 1)

The passage block of claim 1, wherein so the filter is a sintered nickel fiber filter.

### Claim 3 (depends on 1)

The device passage block of claim 1, wherein said the filter is a sintered stainless steel fiber filter.

### Claim 4 (depends on 1)

The passage block of claim 1, wherein the passage block has a height of one quarter inch or less.

### Claim 5

A passage block comprising:
a passage block body having a first fluid passage configured to allow fluid flow through the block body; and
an insert having a second fluid passage substantially parallel to the first fluid passage and configured to allow fluid flow through the insert, the insert further including:
an insert retainer configured to mount on the block body; and
a filter oriented substantially normal to a direction of flow of the second flow passage, the filter being disposed proximate to the second passage such that fluid passing through the second fluid passage passes through the filter.

### Claim 6 (depends on 5)

The passage block of claim 5, wherein the filter is a sintered nickel fiber filter.

### Claim 7 (depends on 5)

The passage block of claim 5, wherein the filter is a sintered stainless steel fiber filter.

### Claim 8 (depends on 5)

The passage block of claim 5, wherein the passage block has an overall height of one quarter inch or less.

### Claim 9

A gas supply device comprising:
a passage block configured to be disposed between a gas-supply base and
at least one fluid control device arranged to be mounted to the base, the passage block including:
a passage block body;
a first fluid passage formed through the block body;
an insert retainer configured to fit in the block body;
an insert configured to be held by the insert retainer;
a second fluid passage on the insert and the insert retainer, the second fluid passage being substantially parallel to the first fluid passage; and
a filter oriented substantially normal to a direction of the second fluid passage, the filter being disposed between the insert retainer and the insert such that fluid passing the second fluid passage passes through the filter.

### Claim 10 (depends on 9)

The gas supply device of claim 9, wherein the filter is a sintered nickel fiber filter.

### Claim 11 (depends on 9)

The gas supply device of claim 9, wherein the filter is a sintered stainless steel fiber filter.

### Claim 12 (depends on 9)

The gas supply device of claim 9, wherein the passage block has an overall height of one quarter inch or less.

### Claim 13

A gas supply device comprising:
a base having a plurality of gas passageways;
a plurality of fluid control devices; and
a passage block disposed between the base and at least one of the fluid control devices, the passage block including:
a passage block body having an upper surface and a lower surface;
a first fluid pass through passage from the upper surface to the lower surface of the block body;
an insert retainer on the block body configured to have an upper surface substantially coplanar with the upper surface of the block body;
an insert held in the insert retainer configured to have a lower surface substantially coplanar with the lower surface of the block body;
a second fluid pass through passage on the insert and the insert retainer; and
a filter disposed between the insert retainer and the insert such that fluid passing through the second fluid pass through passage passes through the filter.

### Claim 14 (depends on 13)

The gas supply device of claim 13, wherein the filter is a sintered nickel fiber filter.

### Claim 15 (depends on 13)

The gas supply device of claim 13, wherein the filter is a sintered stainless steel fiber filter.

### Claim 16 (depends on 13)

The gas supply device of claim 13, wherein the passage block has a height of one quarter inch or less.