Float level adjustment means

• US 4,574,832 A
• Filed: 07/30/1985
• Issued: 03/11/1986
• Est. Priority Date: 08/01/1984
• Status: Expired due to Term

• Current Assignee: FF Seeley Nominees Pty Ltd.
• Original Assignee: F F Seeley Nominees Pty., Ltd.
• Inventors: Wright, Peter S.
• Primary Examiner(s): Walton, G. L.
• Application Number:
  US06/760,702
• Time in Patent Office: 224 Days
• Field of Search: 137/426, 137/434, 137/442, 137/443, 137/444, 137/446, 137/448, 4/391, 4/395, 4/403, 73/322.5
• US Class Current: 137/426
• CPC Class Codes: F16K 31/18 actuated by a float floats F16K33/00; float-actuated valves in steam-traps F16T1/20, in boilers F22D5/08
• CPC Class Codes: F16K 33/00 Floats for actuation of valves or other apparatus float actuated valves F16K31/18
• CPC Class Codes: Y10T 137/7413 Level adjustment or selection means
• CPC Class Codes: Y10T 137/7439 Float arm operated valve

Abstract

Adjustment means for a valve float assembly comprising a float arm and a float, the float having a circular side wall with a flange outstanding from it and extending around it helically, the float arm end having flange engaging surfaces slidable over the flange so that rotation of the float raises or lowers it to provide the level adjustment means, and thereby water level height adjustment means.

Claims

1. Level adjustment means for a valve float assembly comprising a float and a float arm comprising:

a circular float side wall, a flange outstanding radially from, and extending helically at least partway around the side wall, axially extending support surfaces on the flange,

and a float arm having flange engaging surfaces at one end and valve engaging means at the other,

the flange engaging surfaces of the arm slidably engaging said flange support surfaces of the float so that, upon rotation of the float relative to the float arm, the float arm is adjustably positioned along the flange support surfaces and thereby moves the float in an axial direction with respect to the float arm to define different fluid levels.

2. Level adjustment means according to claim 1 wherein said flange has a T-shaped cross-section and said one end of the float arm comprises a C-section hook plate which engages over portion of the flange.

3. Level adjustment means according to claim 2 wherein said float comprises two identical mouldings adhered together by a cement join which bisects the T-section flange.

4. Level adjustment means according to claim 1 further comprising a plurality of ribs spaced from one another around the flange and projecting outwardly from a support surface thereof, the ribs being of such dimension as to restrain but not prevent said rotation of the float.

5. Level adjustment means according to claim 1 wherein said valve engaging means of the float arm comprise an apertured boss and actuating tabs outstanding therefrom.