Crank pin configuration for butterfly valve

Patent metadata

Field	Value
Publication number	US-11067176-B2
Application number	US-201916722263-A
Country	US
Kind code	B2
Filing date	Dec 20, 2019
Priority date	Dec 20, 2019
Publication date	Jul 20, 2021
Grant date	Jul 20, 2021

Abstract

A torque transfer arrangement for a butterfly valve includes a crank having a tubular portion with an outer radial surface and an inner radial surface defining a cylindrical bore about a first axis. The tubular portion has two openings connecting the outer surface with the inner surface. A shaft is sized and configured to fit within the cylindrical bore and aligned with the first axis. A hole formed therethrough is substantially perpendicular to the first axis. A tapered pin is sized and configured to snuggly engage within the two openings and the hole. A butterfly valve and method are also disclosed.

First claim

The invention claimed is:

1. A torque transfer arrangement for a butterfly valve comprising:
a crank having a tubular portion with an outer radial surface and an inner radial surface defining a cylindrical bore about a first axis, the tubular portion having two openings connecting the outer surface with the inner surface;
a shaft sized and configured to fit within the cylindrical bore and aligned with the first axis, and having a hole formed therethrough that is substantially perpendicular to the first axis;
a tapered pin sized and configured to engage within the two openings and the hole; and
wherein there is a reduced diameter portion on a tapered pin outer surface intermediate first and second portions, said reduced diameter portion received within said hole.

2. The arrangement as set forth in claim 1 , wherein an outer diameter of said tapered pin decreasing at an angle between a first end and a second end.

3. The arrangement as set forth in claim 2 , wherein said tapered pin being in contact with an inner surface of said shaft defining said hole at a pair of areas on opposed sides of said reduced diameter portion.

4. The arrangement as set forth in claim 3 , wherein said tapered pin being in contact with an inner surface of each of said two openings.

5. The arrangement as set forth in claim 4 , wherein said tubular portion is a boss extending outwardly of a nominal surface of said crank.

6. The arrangement as set forth in claim 1 , wherein said tapered pin has a dry film lubricant on an outer surface.

7. The arrangement as set forth in claim 1 , wherein said tubular portion is a boss extending outwardly of a nominal surface of said crank.

8. The arrangement as set forth in claim 1 , wherein said tapered pin being in contact with an inner surface of said shaft defining said hole at a pair of areas on opposed sides of said reduced diameter portion.

9. The arrangement as set forth in claim 8 , wherein said tapered pin being in contact with an inner surface of each said two openings.

10. The arrangement as set forth in claim 1 , wherein a first of said two openings is larger than a second of said two openings.

11. The arrangement as set forth in claim 10 , wherein said tapered pin extends outwardly of said second of said two openings, and a nut is received on said tapered pin at a location outwardly of said second opening.

12. A butterfly valve assembly comprising:
a butterfly valve mounted on a shaft and within a conduit; and
a torque transfer arrangement for said butterfly valve including a crank having a tubular portion with an outer radial surface and an inner radial surface defining a cylindrical bore about a first axis, the tubular portion having two openings connecting the outer surface with the inner surface;
said shaft sized and configured to fit within the cylindrical bore and aligned with the first axis, and having a hole formed therethrough that is substantially perpendicular to the first axis;
a tapered pin sized and configured to engage within the two openings and the hole; and
wherein there is a reduced diameter portion on a tapered pin outer surface intermediate first and second portions, said reduced diameter portion received within said hole.

13. The butterfly valve assembly as set forth in claim 12 , wherein an outer diameter of said tapered pin decreasing at an angle between a first end and a second end.

14. The butterfly valve assembly as set forth in claim 13 , wherein said tapered pin being in contact with an inner surface of said shaft defining said hole at a pair of areas on opposed sides of said reduced diameter portion.

15. The butterfly valve assembly as set forth in claim 12 , wherein a first of said two openings is larger than a second of said two openings.

16. The butterfly valve assembly as set forth in claim 15 , wherein said tapered pin extends outwardly of said second of said two openings, and a nut is received on said tapered pin at a location outwardly of said second opening.

17. The butterfly valve assembly as set forth in claim 12 , wherein said tapered pin being in contact with an inner surface of said shaft defining said hole at a pair of areas on opposed sides of said reduced diameter portion.

Assignees

• Hamilton Sundstrand Corp

Inventors

• Defelice Robert
• Zawilinski David J

Classifications

• F16K31/528

  with pin and slot · CPC title

• F16K1/22 Primary

  with axis of rotation crossing the valve member, e.g. butterfly valves · CPC title

• F16K1/48

  Attaching valve members to screw-spindles · CPC title

• F16K31/60

  Handles {(form, features or function of taps or faucet handles for domestic plumbing installations E03C1/04)} · CPC title

• F16K1/221 Primary

  specially adapted operating means therefor (operating means per se F16K31/00) · CPC title