For a refrigerant service line coupling device

• US 5,450,875 A
• Filed: 07/28/1993
• Issued: 09/19/1995
• Est. Priority Date: 07/28/1993
• Status: Expired due to Fees

• Current Assignee: Parker Hannifin Customer Support, Inc.
• Original Assignee: White Industries
• Inventors: Knowles, Steven M., Chichester, Dennis B.
• Primary Examiner(s): Schwadron, Martin P.
• Assistant Examiner(s): Lee, Kevin L.
• Application Number:
  US08/098,192
• Time in Patent Office: 783 Days
• Field of Search: 137/614, 137/614.06, 137/614.04, 137/614.03, 137/614.05, 251/149.1, 251/149.9, 251/149.6, 62/292, 62/50.7
• US Class Current: 137/614.05
• CPC Class Codes: F16L 37/413 the lift valve being of the sleeve type, i.e. a sleeve being telescoped over an inner cylindrical wall
• CPC Class Codes: F25B 45/00 Arrangements for charging or discharging refrigerant
• CPC Class Codes: Y10T 137/87965 Valve- or closure-operated by coupling motion

Abstract

A coupling member is provided for coupling a refrigerant line to a refrigerant port of a refrigeration system. The coupling member includes a generally cylindrical body member having a proximal end portion, a distal end portion, a radially inwardly facing surface defining an axially extending interior passageway, and a radially outwardly facing surface. The radially inwardly facing surface includes a circumferential fluid passageway portion. A radially extending fluid inlet passageway extends between the circumferential fluid passageway and the radially outwardly facing surface. An inner sleeve member is disposed in the axially extending interior passageway for axial movement therein. The inner sleeve member includes a wall having a radially inwardly facing surface defining an interior of the inner sleeve member, and a radially outwardly facing surface defining a boundary of the circumferential fluid passageway. A pin depressor member is disposed at least partially in the interior of the inner sleeve. A control cap member is adjustably positioned with respect to the body. A member is also provided for coupling the control cap member and the inner sleeve member so that adjustment of the axial position of the control cap member imparts axial movement to the inner sleeve member and the pin depressor member.

Claims

1. A coupling member for coupling a refrigerant line to a refrigerant port, the coupling member comprising:

(a) an outer body member having a proximal end portion, a distal end portion, a radially inwardly facing surface defining an axially extending interior passageway, and a radially outwardly facing surface having a threaded distal end portion, the radially inwardly facing surface including a circumferential fluid passageway portion,

(b) a radially extending fluid inlet passageway extending between the circumferential fluid passageway and the radially outwardly facing surface,

(c) an inner body member disposed in the axially extending interior passageway for axial movement therein, the inner body member including a wall having a radially inwardly facing surface defining an interior of the inner body member, and a radially outwardly facing surface defining at least a partial boundary of the circumferential fluid passageway,

(d) a pin depressor member disposed at least partially in the interior of the inner body member,

(e) a control cap member adjustably positionable with respect to the outer body, the control cap member including a generally sheet-like radially extending portion having a perimeter and an axially extending flange portion disposed generally adjacent to the perimeter of the radially extending portion, the axially extending flange portion including threads for engaging the threaded distal end portion of the radially outwardly facing surface of the outer body portion and

(f) a means for coupling the control cap member and inner body member so that adjustment of the axial position of the control cap member permits axial movement of the inner body member and pin depressor member.

2. The invention of claim 1 further comprising a first gasket means disposed on the radially inwardly facing surface of the outer body and positioned in a distal direction from the circumferential fluid passageway, and a second gasket means disposed on the radially inwardly facing surface of the outer body, and positioned in a proximal direction from the circumferential fluid passageway.

3. The invention of claim 1 further comprising a radially extending fluid conduit port coupled to the radially extending fluid passageway, the radially extending fluid conduct port including a relatively reduced diameter portion disposed adjacent to the radially outwardly facing surface of the outer body member, and a relatively enlarge diameter portion disposed in a spaced relation to the outwardly facing surface of the outer body member.

4. The invention of claim 3 wherein the threaded distal end portion of the outer body member, the axially extending flange portion of the control cap member, the reduced diameter portion of the fluid conduit port and the enlarged diameter portion of the fluid conduit port are sized and positioned for receiving at least a portion of the axially extending flange portion of the control cap member in the space between the outer body member and the enlarged diameter portion of the fluid conduit port.

5. The invention of claim 1 wherein the inner body member includes an axially opening aperture defining a valve seat.

6. The invention of claim 5 wherein the pin depressor member includes (a) an axially extending distal stem portion, (b) a valve portion for selectively engaging the valve seat in a sealing relation, and (c) a pin depressing stem extending axially from the valve portion.

7. The invention of claim 1 wherein the plug member includes means for engaging the inner body member.

8. The invention of claim 1 further comprising an engagement means disposed at the proximal end of the outer body member for engaging a refrigerant port, the engagement means including at least two radial apertures disposed in the proximal portion of the outer body member, and locking elements placeable in the radial apertures and moveable between an engaged portion a disengaged position.

9. The invention of claim 8 wherein the engagement means includes:

(a) an outer sleeve means having a radially inwardly facing surface, the radially inwardly facing surface having a reduced diameter portion and an enlarged diameter portion, the outer sleeve means being moveable axially between an engaged position wherein the reduced diameter portion engages the locking members to move the locking members into their engaged position to engage the refrigerant port to fixedly couple the refrigerant port to the coupling member, and a disengaged position wherein the enlarged diameter portion permits the locking members to move radially outwardly in the at least two radial apertures to their disengaged position so that the refrigerant port can be disconnected from the coupling member, and

(b) a biasing means for normally biasing the outer sleeve into its engaged position.

10. A coupling member for coupling a refrigerant line to a refrigerant port, the coupling member comprising:

(a) an outer body member having a proximal end portion, a distal end portion a radially inwardly facing surface defining an axially extending interior passageway, and a radially outwardly facing surface the radially inwardly facing surface including a circumferential fluid passageway portion,

(b) a radially extending fluid inlet passageway extending between the circumferential fluid passageway and the radially outwardly facing surface,

(c) an inner body member disposed in the axially extending interior passageway for axial movement therein, the inner body member including a wall having a radially inwardly facing surface defining an interior of the inner body member, and a radially outwardly facing surface defining at least a partial boundary of the circumferential fluid passageway,

(d) a pin depressor member disposed at least partially in the interior of the inner body member,

e) a control cap member adjustably positionable with respect to the outer body member, and

(f) a means for coupling the control cap member and inner body member so that adjustment of the axial position of the control cap member facilitates axial movement of the inner body member and pin depressor member,

wherein the control cap member includes a radially extending portion, and an aperture formed in the radially extending portion, and the means for coupling the control cap member and inner body member comprises a plug member insertable through the aperture and coupled to the inner body member.

11. The invention of claim 10 wherein the plug member includes a head disposed distally of the radially extending portion of the control cap member, and a probe portion extending through the aperture in the radially extending portion of the control cap member, the probe portion including a threaded surface for threadedly engaging the inner body member to fixedly couple the control cap member, plug member and inner body member.

12. The invention of claim 10 wherein the distal portion of the radially outer surface of the outer body member includes threads, and the control cap member includes a flange portion having a threaded radially inner surface engageable with the threads of the radially outer surface of the outer body member, wherein rotation of the control cap member in its threaded engagement with the outer body member permits axial movement of the inner body member.

13. A coupling member for coupling a refrigerant line to a refrigerant port, the coupling member comprising:

an outer body member having a proximal end portion a distal end portion, a radially inwardly facing surface defining an axially extending interior passageway, and a radially outwardly facing surface, the radially inwardly facing surface including a circumferential fluid passageway portion,

(b) a radially extending fluid inlet passageway extending between the circumferential fluid passageway and the radially outwardly facing surface,

(c) an inner body member disposed in the axially extending interior passageway for axial movement therein, the inner body member including a wall having a radially inwardly facing surface defining an interior of the inner body member, and a radially outwardly facing surface defining at least a partial boundary of the circumferential fluid passageway,

(d) a pin depressor member disposed at least partially in the interior of the inner body member, the pin depressor member including an axially extending distal stem portion, a valve portion, and a pin depressing stem extending axially from the valve portion,

(e) a control cap member adjustably positionable with respect to the outer body member, and

(f) a means for coupling the control cap member and inner body member so that adjustment of the axial position of the control cap member permits axial movement of the inner body member and pin depressor member.

14. The invention of claim 13 wherein the inner body member includes an axially extending aperture defining a valve seat, and

the pin depressor member includes a gasket means for selectively engaging the valve seat, and a biasing means for biasing the gasket means into engagement with the valve seat, and for permitting the gasket means to move out of engagement with the valve seat when the pin depressing stem is engaged with a refrigerant port.

15. The invention of claim 14 wherein the means for coupling the control cap member to the inner body member comprises a plug member having a probe portion for limiting the amount of axial movement of the pin depressor member.

16. The invention of claim 13 wherein the means for coupling the control cap member to the inner body member comprises a plug member, the plug member including a head disposed exteriorly of the radially extending portion, and a probe portion extending interiorly of the control cap member and operatively coupled to the inner body member.

17. The invention of claim 16 wherein the inner body member includes an axially extending opening aperture defining a valve seat, and the pin depressor includes a gasket means for selectively engaging the valve seat, and a biasing means for biasing the gasket into engagement with the valve seat and for permitting the pin depressor member to move axially to allow the gasket means to move out of engagement with the valve seat to allow fluid to flow out of the interior of the inner body member, the probe portion of the plug member being positioned to limit the axial movement of the pin depressor member.

18. The invention of claim 17 wherein the control cap member includes a radially extending portion having an aperture, and a flange portion having a threaded radially inner surface,

the radially outer surface of the distal portion of the outer body member is threaded for engaging the threaded radially inner surface of the flange portion of the control cap member, and

the probe portion of the plug member extends through the aperture of the radially extending portion.

19. A coupling member for coupling a refrigerant line to a refrigerant port, the coupling member comprising;

(a) an outer body member having a proximal end portion a distal end portion, a radially inwardly facing surface defining an axially extending interior passageway, and a radially outwardly facing surface the radially inwardly facing surface including a circumferential fluid passageway portion,

(b) a radially extending fluid inlet passageway extending between the circumferential fluid passageway and the radially outwardly facing surface,

(c) an inner body member disposed in the axially extending interior passageway for axial movement therein the inner body member including a wall having a radially inwardly facing surface defining an interior of the inner body member, and a radially outwardly facing surface defining at least a partial boundary of the circumferential fluid passageway,

(d) a pin depressor member disposed at least partially in the interior of the inner body member,

(e) a control cap member adjustably positionable with respect to the outer body member, and

(f) means for coupling the control cap member ad inner body member so that adjustment of the axial position of the control cap member permit axial movement of the inner body member and pin depressor member, the means for coupling the control cap and inner body member includes a plug member operatively coupled to each of the control cap member and inner body member.

20. The invention of claim 19 wherein the control cap member includes an aperture, and the plug member includes a head disposed distally of the control cap member, and a probe portion extending through the aperture in the radially extending portion, the probe portion including a threaded surface for threadedly engaging the inner body member.

21. A coupling member for coupling a refrigerant line to a refrigerant port, the coupling member comprising

(a) a generally cylindrical outer body member having a proximal end portion, a distal end portion, a radially inwardly facing surface defining an axially extending interior passageway, and a radially outwardly facing surface, the radially inwardly facing surface having a plurality of segments of different diameter, including a relatively enlarged diameter circumferential fluid passageway portion, a first gasket means positioned in a distal direction from the circumferential fluid passageway portion, and a second gasket means positioned in a proximal direction from the circumferential fluid passageway portion,

(b) a radially extending fluid inlet passageway extending between the circumferential fluid passageway and the radially outwardly facing surface,

(c) a fluid conduit port coupled to the radially extending fluid inlet passageway for coupling the refrigerant line to the coupling member,

(d) an inner body member disposed in the axially extending interior passageway for axial movement therein, the inner body member having a threaded distal end, a proximal end, and a wall extending between the proximal end and the distal end, the wall including a radially inwardly facing surface defining an interior, a radially outwardly facing surface defining a boundary of the circumferential fluid passageway, and at least one aperture extending through the wall between the radially inwardly facing surface and the radially outwardly facing surface to permit fluid flow between the circumferential passageway and the interior of the inner body member, the proximal end of the inner body member including an axially opening aperture defining a valve seat,

(e) a pin depressor member disposed at least partially in the interior of the inner body member, the pin depressor member including

(1) an axially extending distal stem portion,

(2) a valve portion for selectively engaging the valve seat in a sealing relation,

(3) a pin depressing stem extending axially from the valve portion,

(f) a biasing means for biasing the valve portion into engagement with the valve seat,

(g) a control cap member threadedly engaged to the radially outwardly facing surface of the outer body member, the control cap member including a control cap aperture,

(h) a plug member including a head portion disposed distally of the control cap member, and a probe portion extending through the control cap aperture, the probe portion being threadedly engaged to the inner body member to fixedly couple the control cap member, plug member, and inner body member so that rotation of the control cap member in its threaded engagement with the body imparts axial movement to the plug member, inner body member and pin depressor member, and

(i) an engagement means disposed at the proximal end of the outer body member for engaging the refrigerant port.

22. The invention of claim 21 wherein the engagement means includes

(a) at least two radial apertures disposed in the proximal portion of the body,

locking elements placeable in the radial apertures and moveable between an engaged position and a disengaged position,

(c) an outer sleeve means having a radially inwardly facing surface, the radially inwardly facing surface having a reduced diameter portion and an enlarged diameter portion, the outer sleeve means being moveable axially between an engaged position wherein the reduced diameter portion engages the locking members to move the locking members into their engaged position to engage the refrigerant port to fixedly couple the refrigerant port to the coupling member, and a disengaged position wherein the enlarged diameter portion permits the locking members to move radially outwardly in the at least two radial apertures to their disengaged position, wherein the refrigerant port can be disconnected from the coupling member, and

(d) a biasing means for normally biasing the outer sleeve into its engaged position.

23. A coupling member for coupling a refrigerant line to a refrigerant port, the coupling member comprising:

(a) an outer body member having a proximal end portion, a distal end portion, a radially inwardly facing surface defining an axially extending interior passageway, and a radially outwardly facing surface having a threaded distal end portion, the radially inwardly facing surface including a circumferential fluid passageway portion,

(b) a radially extending fluid inlet passageway extending between the circumferential fluid passageway and the radially outwardly facing surface,

(c) a radially extending fluid conduit port including a relatively enlarged diameter portion disposed in a spaced relation to the outwardly facing surface of the outer body member, and a relatively reduced diameter portion at least partially disposed between the relatively enlarged diameter portion of the fluid conduit port and the outwardly facing surface of the outer body member, the relatively enlarged diameter portion of the radially extending fluid conduit and the outwardly facing surface of the outer body member defining a space therebetween,

(d) an inner body member disposed in the axially extending interior passageway for axial movement therein, the inner body member including a wall having a radially inwardly facing surface defining an interior of the inner body member, and a radially outwardly facing surface,

(e) a pin depressor member disposed at least partially in the interior of the inner body member,

(f) a control cap member adjustably positionable with respect to the outer body, the control cap member including an axially extending flange portion sized and positioned for being at least partially received in the space between the relatively enlarged diameter portion of the fluid conduit and the radially outwardly facing surface of the outer body member, and

(g) a means for coupling the control cap member and inner body member so that adjustment of the axial position of the control cap member permits axial movement of the inner body member and pin depressor member.

24. The invention of claim 23 wherein axially extending flange portion of the control cap member is threaded for engaging the threaded distal end portion of the radially outwardly facing surface, and

the outer body member, reduced diameter portion of fluid conduit port, and the enlarged diameter portion of the fluid conduit port are sized and positioned for receiving at least a portion of the axially extending flange portion of the control cap member in the space between the outer body member and the enlarged diameter portion of the fluid conduit.

25. The invention of claim 23 wherein the control cap member includes a generally sheet-like radially extending portion and an axially extending flange portion disposed generally adjacent to the perimeter of the radially extending portion, the axially extending flange portion including threads for engaging the threaded distal end portion of the radially outwardly facing surface of the outer body portion.