A quick disconnect latching device for use in a liquid conduit coupling has two halves: a pin half and a release half. The pin half includes a casing sleeve into which a latch pin is slidably retained. The latch pin is spring biased into a retracted position within the sleeve. Latch pin dogs are lo
A quick disconnect latching device for use in a liquid conduit coupling has two halves: a pin half and a release half. The pin half includes a casing sleeve into which a latch pin is slidably retained. The latch pin is spring biased into a retracted position within the sleeve. Latch pin dogs are located at the ends of arms extending from the latch pin to interact with a catch within the release half. A hollow nose casing is tapered to cam the arms inward when a sufficient separating axial force is applied to one or both of the pin half and the release half, so that the latch pin dogs release the catch. The amount of force required to separate the latch halves can be adjusted by varying the spring bias using an adjustment screw.
대표청구항▼
What is claimed is: 1. A quick-disconnect latch for a fluid conduit connector, the latch comprising: a pin half comprising: a casing sleeve having a sleeve base and a first spring flange; a latch pin slidably disposed at least partially within the casing sleeve and having a latch pin base and at le
What is claimed is: 1. A quick-disconnect latch for a fluid conduit connector, the latch comprising: a pin half comprising: a casing sleeve having a sleeve base and a first spring flange; a latch pin slidably disposed at least partially within the casing sleeve and having a latch pin base and at least two latch arms extending from the base, each latch arm having a latch pin dog extending radially away from an axial centerline; a bias spring disposed around the casing sleeve, the spring having a proximal end and a distal end, wherein the distal end abuts the first spring flange to bias the latch pin toward the sleeve base; a screw extending axially through the sleeve base, the screw having a head end for retaining a second spring flange and a threaded end for mating with a threaded bore formed in the latch pin base, wherein the second spring flange abuts the proximal end of the spring; a pin casing assembly comprising a nose casing having a tapered cavity formed therein and a cylindrical base with a distal extension extending into the tapered cavity, the cylindrical base and distal extension each having channels formed therein for slidably receiving the at least two latch arms, wherein the at least two latch arms extend at least partially into the tapered cavity, and wherein the pin casing assembly is attached to the casing sleeve so that the latch pin is adapted to slide axially relative to the pin casing assembly; and a release half for mating with the pin half, the release half comprising a release housing with a release catch for cooperating with the latch pin dogs to engage the release half and the pin half; wherein adjustment of the screw controls compression of the bias spring to adjust bias force applied by the spring to establish a pre-determined axial break force and wherein the pin half is separable from the release half by applying axially separating forces that exceed the pre-determined axial break force. 2. The quick-disconnect latch of claim 1, wherein the release half further comprises a manual release assembly comprising: a release trigger disposed within the release housing and comprising a first camming surface; a release slide slidably disposed within the release housing having a second camming surface for interacting with the first camming surface, wherein activation of the release trigger causes the release slide to move toward the pin half, forcing the latch arms radially inward until the latch pin dogs lose contact with the release catch, releasing the pin half from the release half. 3. The quick-disconnect latch of claim 2, wherein the release trigger comprises a spring-biased push button extending through a wall of the release housing and a wedge disposed within the release housing. 4. The quick-disconnect latch of claim 1, further comprising a resilient washer disposed between the latch pin base and the sleeve base. 5. The quick-disconnect latch of claim 1, wherein the at least two latch arms are biased radially outward. 6. The quick-disconnect latch of claim 1, wherein spring flange has a plurality of grooves formed in its outer surface for cooperating with fasteners for attaching the pin half within a fluid conduit connector housing. 7. The quick-disconnect latch of claim 1, wherein the release catch has an outer surface with a plurality of grooves formed therein for cooperating with fasteners for attaching the release half within a fluid conduit connector housing. 8. A quick-disconnect latch for use in a liquid conduit connector, the latch comprising a pin half and a release half, wherein the pin half comprises: a casing sleeve having a sleeve base and a first flange; a screw extending axially through the sleeve base, the screw having a head end with a second flange; a latch pin slidably disposed at least partially within the casing sleeve and having a latch pin base with a threaded bore for receiving the threaded end of the screw and a plurality of latch arms extending from the base, each latch arm having a latch pin dog extending radially away from an axial centerline; a bias spring disposed around the casing sleeve and retained between the first flange and the second flange for biasing the latch pin toward the sleeve base; a pin casing assembly attached to the casing sleeve, the pin casing assembly comprising a nose casing having a tapered cavity formed therein and a cylindrical base adapted to slidably fit between the latch arms so that the at least two latch arms extend at least partially into the tapered cavity, wherein the latch pin is adapted to slide axially relative to the pin casing assembly; wherein adjustment of the screw controls compression of the bias spring to adjust bias force applied by the spring to establish a pre-determined axial break force and wherein the pin half is separable from the release half by applying axially separating forces that exceed the pre-determined axial break force; and wherein the release half comprises: a release housing with a release catch for cooperating with the latch pin dogs; a release trigger disposed within the release housing and comprising a first camming surface; and a release slide slidably disposed within the release housing having a second camming surface for interacting with the first camming surface, wherein activation of the release trigger causes the release slide to move toward the pin half, forcing the latch arms radially inward until the latch pin dogs lose contact with the release catch, releasing the pin half from the release half. 9. The quick-disconnect latch of claim 8, wherein the release trigger comprises a spring-biased push button extending through a wall of the release housing and a wedge disposed within the release housing. 10. The quick-disconnect latch of claim 8, further comprising a resilient washer disposed between the latch pin base and the sleeve base. 11. The quick-disconnect latch of claim 8, wherein the at least two latch arms are biased radially outward. 12. The quick-disconnect latch of claim 8, wherein first flange has a plurality of grooves formed in its outer surface for cooperating with fasteners for attaching the pin half within a fluid conduit connector housing. 13. The quick-disconnect latch of claim 1, wherein the release catch has an outer surface with a plurality of grooves formed therein for cooperating with fasteners for attaching the release half within a fluid conduit connector housing. 14. A quick-disconnect latch having a pin half and a release half for use in a liquid conduit connector, the latch comprising: a latch pin having a plurality of latch arms, each latch arm having a latch pin dog at a distal end for interacting with a release catch in the release half; a casing sleeve for slidably retaining the latch pin, the casing sleeve having a first flange; a spring disposed over the casing sleeve with a first spring end abutting the first flange; an adjustment screw having a second flange and a threaded end mated with the latch pin, wherein a second spring end of the spring abuts the second flange to bias the second flange away from the first flange and the latch pin into the casing sleeve; and a nose casing having a base portion slidably disposed between the latch arms and attached to a distal end of the casing sleeve, the nose casing having a hollow nose with a tapered cavity for contacting the latch pin dogs to cam the arms inward when a pre-determined separating axial force is applied to one or both of the pin half and the release half so that the latch pin dogs release the release catch; wherein the pre-determined separating axial force is adjusted by turning the adjustment screw. 15. The quick-disconnect latch of claim 1, wherein the release half further comprises a manual release assembly comprising: a release trigger disposed within release housing and comprising a first camming surface; a release slide slidably disposed within the release housing having a second camming surface for interacting with the first camming surface, wherein activation of the release trigger causes the release slide to move toward the pin half, forcing the latch arms radially inward until the latch pin dogs lose contact with the release catch, releasing the pin half from the release half. 16. The quick-disconnect latch of claim 15, wherein the release trigger comprises a spring-biased push button extending through a wall of the release housing and a wedge disposed within the release housing. 17. The quick-disconnect latch of claim 14, further comprising a resilient washer disposed between a base of the latch pin and a base of the casing sleeve. 18. The quick-disconnect latch of claim 14, wherein the latch arms are biased radially outward. 19. The quick-disconnect latch of claim 14, wherein the first flange has a plurality of grooves formed in its outer surface for cooperating with fasteners for attaching the pin half within a fluid conduit connector housing. 20. The quick-disconnect latch of claim 14, wherein the release catch has an outer surface with a plurality of grooves formed therein for cooperating with fasteners for attaching the release half within a fluid conduit connector housing.
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