US3604335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for regulating the temperature of the infusion water in a machine for preparing coffee and similar infusions
Assignee: Individual
•
Filing: 1970-03-10
•
Granted: 1971-09-14
•
Expires: 1990-03-10
Abstract
Abstract Device for regulating the temperature of the infusion water in a machine for preparing coffee and similar infusions comprising a tubular body containing a cylinder in which a piston defines two chambers for alternative communication with an inlet and a discharge cold water pipe, the tubular body further comprising a cavity for holding hot infusion water kept in communication with a plunger tube partly interned in a boiler for providing hot water under pressure and with at least one duct made in the tubular body to emerge in the infuser piston cylinder.
Inventors
- 👤 Jacques-Daniel Lafitte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:07
CPC Classifications
A; A47; A47J; A47J31/00; A47J31/44; A47J31/54; A47J31/24
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
187 words
Device for regulating the temperature of infusion water in a machine for making coffee and similar infusions comprising an infuser body containing an infuser piston rigidly attached to a driving piston housed in a cylinder, said driving piston defining in said cylinder two variable volume chambers, a four-way cock to put into communication alternatively said two variable volume chambers respectively with an inlet pipe for cold water under pressure and with a discharge pipe, characterized in that it is formed by a tubular body provided with two connections, of which one is branched on to the cold water discharge pipe coming from the driving piston chambers and the other connected to an emptying pipe, said tubular body being fitted in the infuser body for traversing at least part a cavity provided for holding infusion water defined by the body, and being kept in communication, on the one hand, with a plunger tube partly interned in a boiler for providing hot water under pressure, and on the other hand, with at least one duct made in the infuser body to emerge in the cylinder of the infuser piston.
Claim 2
Dependent Claim
187 words
Device for regulating the temperature of infusion water in a machine for making coffee and similar infusions comprising an infuser body containing an infuser piston rigidly attached to a driving piston housed in a cylinder, said driving piston defining in said cylinder two variable volume chambers, a four-way cock to put into communication alternatively said two variable volume chambers respectively with an inlet pipe for cold water under pressure and with a discharge pipe, characterized in that it is formed by a tubular body provided with two connections, of which one is branched on to the cold water discharge pipe coming from the driving piston chambers and the other connected to an emptying pipe, said tubular body being fitted in the infuser body for traversing at least part a cavity provided for holding infusion water defined by the body, and being kept in communication, on the one hand, with a plunger tube partly interned in a boiler for providing hot water under pressure, and on the other hand, with at least one duct made in the infuser body to emerge in the cylinder of the infuser piston.
Claim 3
Dependent Claim
34 words
Device according to claim 1 in which the tubular body contains at least one disturber placed at least partly perpendicularly to the flow direction of the cold water coming from the driving cylinder chambers.
Claim 4
Dependent Claim
34 words
Device according to claim 2, characterized in that the disturber is provided with projections, wedges and other similar members whereby favorizing the disturbing of the cold water made to traverse the temperature regulating device.
Claim 5
Dependent Claim
25 words
Device according to one of the claim 2, characterized in that the disturber is placed inside the tubular body for creating a winding circulation path.
Claim 6
Dependent Claim
19 words
Device according to one of the claim 2, characterized in that the tubular body contains more than one disturber.
Claim 7
Dependent Claim
80 words
Device according to claim 1 in which the tubular body is of slight thickness made of a material with good heat exchange characteristics and contains a removable disturber made by at least one plate or strip whose width is approximately equal to the diameter of the tubular body and whose length is provided for arranging with the bottom of the tubular body a space appreciably equal to the penetrating height of said body in the cavity holding the infusion water.
Claim 8
Dependent Claim
48 words
Device according to claim 1, characterized in that the tubular body forms, at its top part normally placed outside the infuser body after fitting, two connections for linking up with the cold water evacuation pipe of the two chambers of the driving cylinder and with the emptying piping.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-13 | 1975-03-15 | 1975-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-13 | 1979-03-15 | 1979-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-13 | 1983-03-15 | 1983-09-14 | $7700.00 | Window Closed / Lapsed |