US4653573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Connecting apparatus for a radiator
Assignee: Danfoss AS
•
Filing: 1985-10-24
•
Granted: 1987-03-31
•
Expires: 2005-10-24
Abstract
Abstract The invention relates to apparatus for connecting a radiator to a single or double tube type hot water central heating system. The connecting apparatus includes a conventional thermostatic valve and a conventional valve controlled bypass between the inlet and outlet connectors of the connecting apparatus. A constructural feature which results in lower manufacturing costs and a lower stock inventory for thermostats involves a return passage from the radiator outlets which has a setting valve that is actuatable independently of the bypass valve.
Inventors
- 👤 Knud A. Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:34
CPC Classifications
F; F24; F24D; F24D19/00; F24D19/0002; F24D19/0014; F24D19/0017; F24D19/0024; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/85954
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
132 words
A connection apparatus for connecting the inlet and outlet apertures of a radiator to single and double tube type hot water central heating installations, comprising, supply and return conduit means having respective supply and return connectors, said supply conduit means having a thermostatic valve and extending from said supply connected to said radiator inlet aperture, bypass passage means connecting said supply and return conduit means, an adjustable bypass valve for said bypass passage means, said return conduit means extending from said radiator outlet aperture to said return connector, and an adjustable setting valve for said return conduit means that is connected to the return conduit means between the connection of the bypass means to the return conduit means and the return connector, the setting valve being adjustable independent of said bypass valve.
Claim 2
Dependent Claim
132 words
A connection apparatus for connecting the inlet and outlet apertures of a radiator to single and double tube type hot water central heating installations, comprising, supply and return conduit means having respective supply and return connectors, said supply conduit means having a thermostatic valve and extending from said supply connected to said radiator inlet aperture, bypass passage means connecting said supply and return conduit means, an adjustable bypass valve for said bypass passage means, said return conduit means extending from said radiator outlet aperture to said return connector, and an adjustable setting valve for said return conduit means that is connected to the return conduit means between the connection of the bypass means to the return conduit means and the return connector, the setting valve being adjustable independent of said bypass valve.
Claim 3
Dependent Claim
47 words
Apparatus according to claim 1 characterized in that said thermostatic valve, said bypass passage means and said bypass valve, and said return conduit means and said setting valve are all arranged with parallel axes in a plane which is parallel to one side wall of said radiator.
Claim 4
Dependent Claim
76 words
Apparatus according to claim 2 wherein said radiator has two parallel plates that each has one of said outlet apertures, characterized in that said return conduit means includes a T tube having a transverse member connected to each of the parallel plate radiator outlet apertures and a longitudinal member connected to said return connector, said return conduit means having a valve seat, said setting valve having a screwthread adjustable throttle element cooperable with said valve seat.
Claim 5
Dependent Claim
24 words
Apparatus according to claim 3 characterized in that said throttle element of said setting valve has an externally exposed section engageable by a screwdriver.
References Cited (Backward Citations)
US348615A
Cited
US1825306A
Cited
US1816320A
Cited
FR850923A
Cited
US3001479A
Cited
DE1101725B
Cited
DE1163866B
Cited
FR1319184A
Cited
US3901438A
Cited
DE2311080A1
Cited
US3934609A
Cited
US4032068A
Cited
DE2520159A1
Cited
DE2708205A1
Cited
DE2936027A1
Cited
US4397418A
Cited
US4367785A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-03-30 | 1990-09-29 | 1991-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-30 | 1994-09-29 | 1995-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-30 | 1998-09-29 | 1999-03-31 | $7700.00 | Window Closed / Lapsed |