Check valve hinge pin

Patent metadata

Field	Value
Publication number	US-2016018012-A1
Application number	US-201414331975-A
Country	US
Kind code	A1
Filing date	Jul 15, 2014
Priority date	Jul 15, 2014
Publication date	Jan 21, 2016
Grant date	—

Abstract

One embodiment includes a hinge pin with a first end, a second end, and an interference portion located at or near the second end. A ratio of a length of the interference portion to an outer diameter of the interference portion ranges between approximately 0.3019 and 0.3341.

First claim

1 . A hinge pin comprising:
a first end; a second end; and an interference portion located at or near the second end, wherein a ratio of a length of the interface portion to an outer diameter of the interface portion ranges between approximately 0.3019 and 0.3341.

2 . The hinge pin of claim 1 , wherein the length of the interface portion ranges between approximately 0.095 inch (0.241 cm) and 0.105 inch (0.267 cm) and the outer diameter of the interface portion ranges between approximately 0.3143 inch (0.7983 cm) and 0.3147 inch (0.7993 cm).

3 . The hinge pin of claim 2 , wherein the length of the interface portion is approximately 0.100 inch (0.254 cm) and the outer diameter of the interface portion is approximately 0.3145 inch ( 0 . 7988 cm).

4 . The hinge pin of claim 1 , wherein an outer diameter of the hinge pin from the first end to a beginning of the interference portion ranges between approximately 0.3115 inch (0.7912 cm) and 0.3125 inch (0.7938 cm).

5 . The hinge pin of claim 4 , wherein the outer diameter of the hinge pin from the first end to the beginning of the interference portion is approximately 0.3120 inch (0.7925 cm).

6 . The hinge pin of claim 1 , wherein the hinge pin is configured to be placed in a housing of a valve, and wherein a length of the hinge pin configured to be located within the housing of the valve ranges between approximately 3.70 inch (9.40 cm) and 3.71 inch (9.42 cm).

7 . The hinge pin of claim 6 , wherein the length of the hinge pin configured to be located within the housing of the valve is approximately 3.705 inch (9.411 cm).

8 . The hinge pin of claim 1 , further comprising a retention groove at or near the first end of the hinge pin.

9 . A method for installing a hinge pin in a valve, the method comprising:
inserting a first end of the hinge pin into a first end of a housing of the valve; sliding the hinge pin into the housing until an interference portion at or near a second end of the hinge pin contacts the housing; and press fitting the interference portion of the hinge pin into the housing to create a clearance between an outer diameter of the hinge pin and a flapper coupling ranging between approximately 0.007 inch (0.018 cm) and 0.009 inch (0.023 cm).

10 . The method of claim 9 , wherein sliding the hinge pin into the housing comprises sliding the hinge pin through each flapper coupling.

11 . The method of claim 9 , further comprising:
creating a clearance between an outer diameter of the hinge pin and each flapper coupling ranging between approximately 0.007 inch (0.018 cm) and 0.009 inch (0.023 cm).

12 . The method of claim 9 , further comprising:
positioning the first end of the hinge pin to protrude out from a second end of the housing of the valve.

13 . The method of claim 12 , further comprising:
attaching a snap ring to a retention groove on the first end of the hinge pin.

14 . The method of claim 9 , further comprising:
cooling the hinge pin such that hinge pin shrinks and is insertable into the first end of the housing of the valve.

15 . The method of claim 9 , further comprising:
heating the housing of the valve such that the housing expands for inserting the hinge pin into the first end of the housing.

Assignees

• Hamilton Sundstrand Corp

Inventors

• Kamp Josh
• Feng Feng

Classifications

• E05D5/128 Primary

  the pin having a recess or through-hole engaged by a securing member · CPC title

• F16K15/038

  having a common hinge · CPC title

• E05D2005/102

  Pins · CPC title

• F16K15/035 Primary

  with a plurality of valve members · CPC title

• E05D5/10

  Pins, sockets or sleeves; Removable pins (E05D15/522 takes precedence) · CPC title