Patent US4574832A successfully refreshed from Google Patents.
US4574832A
Expired / Lapsed
US
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Float level adjustment means
Assignee: FF Seeley Nominees Pty Ltd
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Filing: 1985-07-30
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Granted: 1986-03-11
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Expires: 2005-07-30
Abstract
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.
Inventors
- 👤 Peter S. Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:22
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/18; F16K33/00; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7358; Y10T137/7413; Y10T137/7439
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
120 words
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.
Claim 2
Dependent Claim
120 words
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.
Claim 3
Dependent Claim
34 words
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.
Claim 4
Dependent Claim
25 words
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.
Claim 5
Dependent Claim
45 words
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.
Claim 6
Dependent Claim
25 words
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.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-03-10 | 1989-09-09 | 1990-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-10 | 1993-09-09 | 1994-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-10 | 1997-09-09 | 1998-03-11 | $7700.00 | Window Closed / Lapsed |