Crank

Patent metadata

Field	Value
Publication number	US-9057455-B2
Application number	US-201213354770-A
Country	US
Kind code	B2
Filing date	Jan 20, 2012
Priority date	Jan 20, 2012
Publication date	Jun 16, 2015
Grant date	Jun 16, 2015

Abstract

A crank for a valve linkage system includes a pin sleeve having a bore for receiving a connecting pin to connect the crank to a link; a shaft sleeve having a bore for receiving a shaft; an arm between the pin bore and shaft sleeve; and a first stiffening rib extending from the shaft sleeve toward the pin bore.

First claim

The invention claimed is:

1. A valve linkage system comprising:
a pin sleeve having a pin bore for receiving a connecting pin to connect a crank to a link in the valve linkage system, wherein a connection between the crank and the link consists of one side of the crank interfacing with one side of the link such that there is a single connection at the pin bore of the crank to the link;
an integral locking insert inside the pin bore;
a shaft sleeve having a bore for receiving a shaft;
an arm between the pin bore and shaft sleeve; and
a first stiffening rib extending from the shaft sleeve toward the pin bore.

2. The system of claim 1 , and further comprising:
a second stiffening rib extending from the shaft sleeve toward the pin bore.

3. The system of claim 1 , wherein the first stiffening rib is located above the arm and the second stiffening rib is located below the arm.

4. The system of claim 1 , wherein the first stiffening rib is located above the arm.

5. The system of claim 1 , wherein the integral locking insert comprises:
a helical insert to hold a bolt connecting the crank to the link.

6. A linkage system for connecting a pneumatic actuation system to an air valve having a valve body connected to a rotatable shaft, the linkage system comprising:
a clevis for connecting to the actuation system to be moved by the actuation system;
a crank with a pin sleeve having a pin bore for receiving a connecting pin, a shaft sleeve having a bore for receiving the rotatable shaft, an arm between the pin bore and shaft sleeve and a first stiffening rib extending from the shaft sleeve toward the pin bore; and
a link with a pin bore on one end for receiving the connecting pin and connecting to the clevis on an opposite end to move with the clevis and to move the crank,
wherein a connection between the link and the crank consists of one side of the crank interfacing with one side of the link such that there is a single connection at the pin bore of the crank to the link, and wherein the pin bore includes a helical locking insert.

7. The linkage system of claim 6 , wherein the connecting pin is a bolt and the connection includes a bushing.

8. The linkage system of claim 6 , wherein the crank further comprises a second stiffening rib.

9. The linkage system of claim 8 , wherein the first stiffening rib is located above the arm and the second stiffening rib is located below the arm.

10. The linkage system of claim 6 , wherein the first stiffening rib is located above the arm.

11. A pneumatic air valve comprising:
a pneumatic actuation system;
a rotatable shaft;
a rotatable valve body connected to the rotatable shaft; and
a linkage system connecting the actuation system to the valve body, wherein the linkage system comprises a clevis for connecting to the actuation system to be moved by the actuation system; a crank with a pin sleeve having a pin bore for receiving a connecting pin, a shaft sleeve having a bore for receiving the rotatable shaft, an arm between the pin bore and shaft sleeve and a first stiffening rib extending from the shaft sleeve toward the pin bore; and a link with a pin bore on one end for receiving the connecting pin and connecting to the clevis on an opposite end to move with the clevis and to move the crank,
wherein a connection between the link and the crank consists of one side of the crank interfacing with one side of the link such that there is a single connection at the pin bore of the crank to the link, and wherein the pin bore includes a helical locking insert.

12. The valve of claim 11 , wherein the connecting pin is a bolt.

13. The valve of claim 11 , wherein the crank further comprises a second stiffening rib.

14. The valve of claim 11 , wherein the first stiffening rib is located above the arm and the second stiffening rib is located below the arm.

15. The valve of claim 11 , wherein the first stiffening rib is located above the arm.

16. The valve of claim 11 , wherein the actuation system comprises a plurality of pistons in cylinders.

17. The valve of claim 11 , wherein the valve is a butterfly valve.

18. A method of installing a crank in a linkage system, the method comprising:
aligning the pin bores of one side of a crank and one side of a link, wherein the crank comprises a pin sleeve having a pin bore for receiving a connecting pin, a shaft sleeve having a bore for receiving the rotatable shaft, an arm between the pin bore and shaft sleeve and a first stiffening rib extending from the shaft sleeve toward the pin bore;
inserting bushing into the link pin bore;
inserting and torqueing a bolt into the pin bores to connect the crank to the link, wherein the pin bore includes a helical locking insert and wherein a connection between the crank and the link consists of the one side of the crank interfacing with the one side of the link such that there is a single connection at the pin bores of the crank to the link; and
sliding the bore of the crank shaft sleeve onto a rotatable shaft connected to a valve body.

Assignees

• Marocchini Francis P
• Hamilton Sundstrand Corp

Inventors

• Marocchini Francis P

Classifications

• F16K31/521 Primary

  comprising a pivoted disc or flap · CPC title

• Y10T74/18208

  Crank, pitman, and slide · CPC title

• Y10T29/49405

  Valve or choke making · CPC title

• Y10T74/2173

  Cranks and wrist pins · CPC title