Self cleaning irrigation valve with offset manual on actuator, body/bonnet alignment, and captured screws

• US 6,394,413 B2
• Filed: 07/23/2001
• Issued: 05/28/2002
• Est. Priority Date: 05/26/1999
• Status: Expired due to Term

• Current Assignee: Toro Company (Toro)
• Original Assignee: Toro Company (Toro)
• Inventors: Kent, John Larry, Dawn, Alan, Lohde, Dan
• Primary Examiner(s): Walton, George L.
• Application Number:
  US09/911,210
• Publication Number:
  US 20010040228A1
• Time in Patent Office: 309 Days
• Field of Search: 251/30.01,30.02,30.03,30.04,30.05,35,45,46,129.03 137/242
• US Class Current: 251/129.03
• CPC Class Codes: F16K 31/402 acting on a diaphragm
• CPC Class Codes: Y10T 137/4336 Cleaning member reciprocates in passage
• CPC Class Codes: Y10T 137/598 With repair, tapping, assembly, or disassembly means
• CPC Class Codes: Y10T 137/5987 Solenoid or electromagnetically operated valve
• CPC Class Codes: Y10T 29/53552 Valve applying or removing

Abstract

An irrigation valve comprises a valve housing made from a valve body joined to a valve bonnet by a plurality of attachment screws. The valve body and valve bonnet have an alignment rib received in an alignment notch when the body and bonnet are joined together such that the holes that receive the attachment screws are automatically aligned with one another. The attachment screws have a smooth portion adjacent a threaded portion such that the smooth portion when visible signals to the user that the attachment screws are clear of the valve body but are still captured in the valve bonnet. The valve includes a solenoid that may be remotely actuated to open the valve. An L-shaped actuator arm is also operatively connected to the solenoid for manually opening the valve with the upper portion of the actuator arm being closer to the user than in previous valves and thus easier to grip and turn. Finally, a metering pin in the valve has a flexible mounting which permits side-to-side motion in a metering hole in the valve member to allow the valve to be self cleaning.

Claims

1. An irrigation valve, which comprises:

(a) a valve housing having an inlet, an outlet, a flow passageway between the inlet and outlet, a valve seat in the flow passageway, and a valve member which closes the valve by moving into engagement with the valve seat for blocking flow between the inlet and outlet and which opens the valve by moving out of engagement with the valve seat for permitting flow between the inlet and outlet;

(b) a solenoid carried on the valve housing, wherein the solenoid opens the valve when an electrical actuating signal is received by the solenoid, and further including a fitting rotatably carried on the valve housing for holding the solenoid; and

(c) an actuator arm operatively coupled to the solenoid for manipulating the solenoid relative to the housing to manually open the valve when the actuator arm is moved by the user, the actuator arm having an offset configuration with a lower portion and an upper portion, wherein the lower portion of the actuator arm is connected to the rotatable solenoid fitting and manipulates the solenoid relative to the valve housing by rotating the solenoid fitting on the valve housing, and wherein the upper portion of the actuator arm is located vertically above a lower portion of the actuator arm and the actuator arm between the upper and lower portions thereof extends upwardly and outwardly along a portion of the solenoid such that the upper portion of the actuator arm is more easily accessible to the user to be more easily gripped by the user.

2. The valve of claim 1, wherein the upper portion of the actuator arm has a horizontal tab which the user may grip.