Filter-degasser

• US 4,523,934 A
• Filed: 03/06/1984
• Issued: 06/18/1985
• Est. Priority Date: 03/06/1984
• Status: Expired due to Term

• Current Assignee: Henry Joshua
• Original Assignee: Henry Joshua
• Inventors: Joshua, Henry
• Primary Examiner(s): Hart, Charles
• Application Number:
  US06/586,664
• Time in Patent Office: 469 Days
• Field of Search: 55/38, 55/55, 55/159, 55/189, 55/307, 210/406, 210/416, 210/455, 210/474, 422/101-104, 435/311, 435/803
• US Class Current: 96/193
• CPC Class Codes: B01D 36/00 Filter circuits or combinations of filters with other separating devices

Abstract

An all-TEFLON filter-degasser for removing solids and gases from a solvent. The filter-degasser has a filtering portion, a vacuum application portion downstream of the filtering portion, and a solvent bottle connecting portion. The vacuum application portion includes an externally tapered male member, and the solvent bottle connecting portion includes an internally identically tapered female member. The male member can be inserted into and withdrawn from the female member without requiring any relative rotation therebetween, so that the filter-degasser can be connected hermetically airtight to the solvent bottle likewise without any rotation being required therebetween. This abstract is not to be taken either as a complete exposition or as a limitation of the present invention, however, the full nature and extent of the invention being discernible only by reference to and from the entire disclosure.

Claims

1. A solvent filter-degasser adapted to be connected to a solvent bottle and having a filtering portion and a vacuum application portion, with said filtering portion including a filter holder having intake and discharge ports and a filter membrane intersecting the path of flow of solvent between said ports;

wherein the improvement comprises that;

(a) said vacuum application portion comprises a generally tubular member having a first bore extending therethrough and open at both ends, said first bore having

(i) an upper section profiled to define interlocking means for tightly securing said member to said discharge port of said filter holder,

(ii) an intermediate section with a smooth wall surface, and

(iii) a lower section the width of which is greater than the diameter of said intermediate section,

and a tube extending through said first bore and having an outer diameter substantially equal to said diameter of said intermediate section of said first bore, said tube being frictionally and tightly received and retained in said intermediate section of said first bore and having its upper end in direct communication with said discharge port of said filter holder for receiving solvent exiting therefrom, said member further having a second bore therein extending from the outside surface of said member to and communicating with said lower section of said first bore for connecting the region of said lower section of said second bore surrounding said tube to a source of vacuum, and at least the lower part of said member having an outside surface which tapers from a maximum diameter to a minimum diameter at the lower end of said member,

(b) whereby said lower part of said member can be inserted into and withdrawn from the neck of said solvent bottle or an adjunct thereof, and be received therein with a smooth tight fit, without requiring relative rotation between said member and said solvent bottle or adjunct thereof.

2. A filter-degasser according to claim 1, wherein said tube is sufficiently long to dispose the lower end thereof at a level somewhat lower than that of the juncture between said second bore and said lower section of said first bore in said member.

3. A filter-degasser according to claim 2, wherein said tube is sufficiently long to dispose said lower end thereof at a level below said lower end of said member.

4. A solvent filter-degasser having a filtering portion, a vacuum application portion and a solvent bottle connecting portion, with said filtering portion including a filter holder having intake and discharge ports and a filter membrane intersecting the path of flow of solvent between said ports;

wherein the improvement comprises that;

(a) said solvent bottle connecting portion comprises a first generally tubular member having a first bore extending therethrough and open at both ends, said first bore having

(i) a lower section profiled to define first interlocking means for tightly securing said first member to the neck of said solvent bottle and

(ii) an upper section with a smooth wall surface which tapers from a maximum diameter at the upper end of said first member to a minimum diameter intermediate said upper end of said first member and said lower bore section; and

(b) said vacuum application portion comprises a second generally tubular member having a second bore extending therethrough and open at both ends, said second bore having

(i) an upper section profiled to define second interlocking means for tightly securing said second member to said discharge port of said filter holder,

(ii) an intermediate section with a smooth wall surface, and

(iii) a lower section the width of which is greater than the diameter of said intermediate section,

and a tube extending through said second bore and having an outer diameter substantially equal to said diameter of said intermediate section of said second bore, said tube being frictionally and tightly received and retained in said intermediate section of said second bore and having its upper end in direct communication with said discharge port of said filter holder for receiving solvent exiting therefrom, said second member further having a third bore therein extending from the outside surface of said second member to and communicating with said lower section of said second bore for connecting the region of said lower section of said second bore surrounding said tube to a source of vacuum, and at least the lower part of said second member having an outside surface which tapers from a maximum diameter to a minimum diameter at the lower end of said second member at a rate identical with that of the taper of said upper section of said first bore in said first member,

(c) whereby after said first member has been connected to the neck of said solvent bottle with the aid of said first interlocking means, said lower part of said second member can be inserted into and withdrawn from said upper section of said first bore in said first member, and be received therein with a smooth tight fit, without requiring relative rotation between said first and second members and hence between the filter-degasser and the solvent bottle.

5. A filter-degasser according to claim 4, wherein said tube is sufficiently long to dispose the lower end thereof at a level somewhat lower than that of the juncture between said third bore and said lower section of said second bore in said second member.

6. A filter-degasser according to claim 5, wherein said tube is sufficiently long to dispose said lower end thereof at a level below said lower end of said second member.

7. A filter-degasser according to claim 4, wherein said discharge port of said filter holder has an interior bore the diameter of which is substantially equal to said outer diameter of said tube, and the upper end region of said tube is frictionally and tightly received in said interior bore of said discharge port.

8. A filter-degasser according to claim 7, wherein said tube is sufficiently long to dispose the lower end thereof at a level somewhat lower than that of the juncture between said third bore and said lower section of said second bore in said second member.

9. A filter-degasser according to claim 8, wherein said tube is sufficiently long to dispose said lower end thereof at a level below said lower end of said second member.

10. A solvent filter-degasser adapted to be connected to a solvent bottle and having a filtering portion and a vacuum application portion, with said filtering portion including a filter holder having a filter membrane intersecting the path of flow of solvent through said filter holder;

wherein the improvement comprises that;

(a) said vacuum application portion comprises a generally tubular member secured to a portion of said filter holder and having a first bore extending therethrough and open at both ends, said first bore having

(i) an upper section and

(ii) a lower section the width of which is greater than the diameter of said upper section,

and a tube extending through said first bore and having an outer diameter substantially equal to said diameter of said upper section of said first bore, said tube being frictionally and tightly received and retained in said upper section of said first bore and having its upper end in direct communication with the interior of said filter holder for receiving solvent exiting therefrom, said member further having a second bore therein extending from the outside surface of said member to and communicating with said lower section of said first bore for connecting the region of said lower section of said second bore surrounding said tube to a source of vacuum, and at least the lower part of said member having an outside surface which tapers from a maximum diameter to a minimum diameter at the lower end of said member,

(b) whereby said lower part of said member can be inserted into and withdrawn from the neck of said solvent bottle or an adjunct thereof, and be received therein with a smooth tight fit, without requiring relative rotation between said member and said solvent bottle or adjunct thereof.

11. A filter-degasser according to claim 10, wherein said tube is sufficiently long to dispose the lower end thereof at a level somewhat lower than that of the juncture between said second bore and said lower section of said first bore in said member.

12. A filter-degasser according to claim 11, wherein said tube is sufficiently long to dispose said lower end thereof at a level below said lower end of said member.

13. A solvent filter-degasser having a filtering portion, a vacuum application portion and a solvent bottle connecting portion, with said filtering portion including a filter holder having a filter membrane intersecting the path of flow of solvent through said filter holder;

wherein the improvement comprises that;

(a) said solvent bottle connecting portion comprises a first generally tubular member having a first bore extending therethrough and open at both ends, said first bore having

(i) a lower section profiled to define interlocking means for tightly securing said first member to the neck of said solvent bottle and

(ii) an upper section with a smooth wall surface which tapers from a maximum diameter at the upper end of said first member to a minimum diameter intermediate said upper end of said first member and said lower bore section, and

(b) said vacuum application portion comprises a second generally tubular member having a second bore extending therethrough and open at both ends, said second bore having

(i) an upper section and

(ii) a lower section the width of which is greater than the diameter of said upper section,

and a tube extending through said second bore and having an outer diameter substantially equal to said diameter of said upper section of said second bore, said tube being frictionally and tightly received and retained in said upper section of said second bore and having its upper end in direct communication with the interior of said filter holder for receiving solvent exiting therefrom, said second member further having a third bore therein extending from the outside surface of said second member to and communicating with said lower section of said second bore for connecting the region of said lower section of said second bore surrounding said tube to a source of vacuum, and at least the lower part of said second member having an outside surface which tapers from a maximum diameter to a minimum diameter at the lower end of said second member at a rate identical with that of the taper of said upper section of said first bore in said first member,

(c) whereby after said first member has been connected to the neck of said solvent bottle with the aid of said interlocking means, said lower part of said second member can be inserted into and withdrawn from said upper section of said first bore in said first member, and be received therein with a smooth tight fit, without requiring relative rotation between said first and second members and hence between the filter-degasser and the solvent bottle.

14. A filter-degasser according to claim 13, wherein said tube is sufficiently long to dispose the lower end thereof at a level somewhat lower than that of the juncture between said third bore and said lower section of said second bore in said second member.

15. A filter-degasser according to claim 14, wherein said tube is sufficiently long to dispose said lower end thereof at a level below said lower end of said second member.