# US 11,028,939 B2 · Rising stem valve

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- Number: US 11,028,939 B2
- Document ID: US11028939B2
- Status: Granted
- Kind: B2
- Application number: 16/581,014
- Filed: 2019-09-24
- Published: 2020-04-02
- Granted: 2021-06-08
- Earliest claimed: 2018-09-27
- Assignees: Dixon Valve and Coupling Company
- Applicants: Dixon Valve & Coupling Company, LLC
- Inventors: Austen Hinton
- Web page: https://patentgrep.com/patent/US11028939B2

## CPC

- F16K 31/52441: {with a pivoted disc or flap}
- B60P 3/2245: {Adaptations for loading or unloading}
- F16K 31/60: Handles {(form, features or function of taps or faucet handles for domestic plumbing installations E03C1/04)}
- F16K 35/00: Means to prevent accidental or unauthorised actuation
- F16K: VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING {(devices for emptying and evacuating the excess liquid in valves or conduits F16L55/07)}
- B60P: VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS (vehicles with special provisions for transporting patients or disabled persons, or their personal conveyances A61G3/00)

## Abstract

A rising stem valve comprises a hollow valve body having a pair of ports defining a flow path through the valve body, a flange base through which one of the ports extends and a valve bonnet opposite the flange base. The valve includes a plunger/seal assembly able to be extended within the valve body to a first position for sealing the port in the flange base and to a second position for unsealing the port in the flange base. The valve also includes a locking mechanism for securing the plunger/seal assembly in the first position. The locking mechanism includes at least one cam lever attached to the valve body and a corresponding groove in a valve stem of the plunger/seal assembly.

## Claims

### Claim 1

A rising stem valve, comprising:
a hollow valve body having a pair of ports defining a flow path through the valve body, a flange base through which one of the ports extends, and a valve bonnet opposite the flange base;
a plunger/seal assembly extendable within the valve body to a first position in which the port in the flange base is sealed and to a second position for unsealing the port in the flange base, the plunger/seal assembly including a valve stem;
a locking mechanism for securing the plunger/seal assembly in the first position, the locking mechanism including at least one cam lever attached to the valve body and a corresponding groove in the valve stem
the valve stem has a plunger at one end thereof for engaging the flange base to seal the port in the flange base when the plunger/seal assembly is extended to said first position;
an opposite end of the valve stem extends through a hub in the valve bonnet and has a handle fixed thereto at a location spaced from the valve bonnet and exterior of the valve body;
the groove is a circumferential groove on the valve stem at a location exterior of the valve body and between the handle and hub of the valve bonnet; and
the at least one cam lever is secured to the hub of the valve bonnet with a cam lever pin about which the cam lever is able to be pivoted to lock the plunger/seal assembly in the first position and to unlock the plunger/seal assembly from the first position.

### Claim 2 (depends on 1)

The rising stem valve according to claim 1, wherein the at least one cam lever includes a locking portion which protrudes into the groove when the valve stem is pivoted in a first direction to drive the plunger/seal assembly into sealing engagement with the flange base to seal the port in the flange base and to lock the plunger/seal assembly in the first position.

### Claim 3 (depends on 2)

The rising stem valve according to claim 2, wherein, when the cam lever is pivoted in a reverse direction about the pin, the locking portion of the cam lever is positioned outside of the groove of the valve stem so that the sealing engagement of the plunger/seal assembly with the flange base is unlocked to unseal the port in the flange base.

### Claim 4 (depends on 3)

The rising stem valve according to claim 3, wherein the at least one cam lever includes a pair of opposed cam levers connected to the hub of the valve bonnet with pins about which the cam levers are adapted to be pivoted.

### Claim 5 (depends on 4)

The rising stem valve according to claim 4, wherein the plunger includes an elastomeric O-ring seal for being compressed against the flange base when the plunger/seal assembly is extended into the valve body to the first position.

### Claim 6 (depends on 5)

The rising stem valve according to claim 5, wherein the other of the ports of the valve body is located in a sidewall of the valve body.

### Claim 7 (depends on 6)

The rising stem valve according to claim 6, wherein the valve body is substantially cylindrical and the valve stem extends longitudinally and centrically within the valve body.

### Claim 8 (depends on 7)

The rising stem valve according to claim 7, wherein the flange base is an ANSI class 150# flange.

### Claim 9 (depends on 7)

The rising stem valve according to claim 7, wherein the minimum spacing between the handle and bonnet is sufficiently large to accommodate a width of a user's fingers.