F24D 3/10
Feed-line arrangements
Official title: Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks {; Hydraulic components of a central heating system}
F24D3/10 (Feed-line arrangements) appears on 303 US grants and 356 published applications in this corpus.
Search patents in F24D- Granted patents
- 303
- Published applications
- 356
- Assignees
- 205
- Inventors
- 614
- Latest grant
- 21 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 6 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 5 | 0 |
| 1989 | 5 | 0 |
| 1990 | 4 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 5 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 6 | 0 |
| 1999 | 8 | 0 |
| 2000 | 6 | 0 |
| 2001 | 3 | 0 |
| 2002 | 7 | 1 |
| 2003 | 6 | 5 |
| 2004 | 3 | 11 |
| 2005 | 1 | 9 |
| 2006 | 8 | 8 |
| 2007 | 7 | 11 |
| 2008 | 3 | 12 |
| 2009 | 4 | 10 |
| 2010 | 6 | 22 |
| 2011 | 0 | 16 |
| 2012 | 6 | 16 |
| 2013 | 8 | 11 |
| 2014 | 1 | 13 |
| 2015 | 7 | 20 |
| 2016 | 11 | 16 |
| 2017 | 13 | 28 |
| 2018 | 16 | 21 |
| 2019 | 23 | 12 |
| 2020 | 16 | 27 |
| 2021 | 16 | 18 |
| 2022 | 9 | 11 |
| 2023 | 12 | 18 |
| 2024 | 21 | 16 |
| 2025 | 9 | 15 |
| 2026 | 0 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Combined space and water heating systems21 Oct 2025US 12,449,139 B2Rheem Manufacturing Company
- Apparatus and method for regulation and balancing of a thermal system12 Aug 2025US 12,386,372 B2I.V.A.R. S.P.A.
- Hydronic expansion tank assembly10 Jun 2025US 12,326,264 B2NIBCO Inc.
- Pump device with a centrifugal pump and a mixing unit27 May 2025US 12,311,324 B2Grundfos Holding A/S
- Hydro-pneumatic pressure vessel and diaphragm assembly method27 May 2025US 12,313,090 B2Flexcon Industries
- Expansion tank capable of preventing internal leakage1 Oct 2026US 2026/0298482 A1
- Tempering circuit manifold and tempering system herewith27 Aug 2026US 2026/0251317 A1
- Connecting system for components for the temperature conditioning of a building9 Jul 2026US 2026/0194254 A1Envola GmbH
- Space heating system4 Jun 2026US 2026/0153246 A1Rinnai Corporation
- Expansion tank with monitoring system4 Jun 2026US 2026/0153247 A1
Most cited
By later US patents
- Plumbing and heating pipe system for water supply purposes, made either completely or mainly of plastic material, especially of polypropylene81US 5,286,001 AKarl Rafeld KG Spritzgusswerk, Elektronik und Formenbau · 1994
- Expansion tank diaphragm assembly50US 3,931,834 AThe Goodyear Tire & Rubber Company · 1976
- Process and apparatus for recycling water in a hot water supply system50US 6,588,377 B12003
- Hydrothermal stabilizer and expansion tank system43US 5,584,316 AACT Distribution, Inc. · 1996
- Expansion tank38US 5,386,925 AAmtrol Inc. · 1995