Patent US4304272A successfully refreshed from Google Patents.
US4304272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Washing and filling machines for containers
Assignee: Sankey Holding Ltd
•
Filing: 1980-05-07
•
Granted: 1981-12-08
•
Expires: 2000-05-07
Abstract
Abstract In a machine for washing or filling a beer keg via a head having a movable probe to open the valve of the keg closure unit, a complementary magnetic carried by the probe and the head for indicating when the probe is in a fully extended position within the head to open the valve and to seal with the closure unit.
Inventors
- 👤 Cyril G. Golding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:12
CPC Classifications
B; B67; B67C; B67C3/00; B67C3/30; B08; B08B; B08B9/00; B08B9/08; B08B9/0804; F; F16; F16L; F16L37/00; F16L37/28; F16L37/38; F16L37/56; F16L37/58; F16L37/62; Y; Y10; Y10S; Y10S141/00; Y10S141/01
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
123 words
In a machine for washing and/or filling with liquid containers having spring-loaded valved closure units, the washing and/or filling being carried out via a head which seals with the container to be washed or filled and which carries a probe movable relative to the head to open the closure unit of the container against the spring loading and to seal with the closure unit; means for sensing that the probe and the head are in a predetermined relative position, the sensing means comprising means on the head or probe to generate a magnetic field and means on the probe or head capable of providing a signal in response to said magnetic field when the head and probe are in said predetermined relative position.
Claim 2
Dependent Claim
123 words
In a machine for washing and/or filling with liquid containers having spring-loaded valved closure units, the washing and/or filling being carried out via a head which seals with the container to be washed or filled and which carries a probe movable relative to the head to open the closure unit of the container against the spring loading and to seal with the closure unit; means for sensing that the probe and the head are in a predetermined relative position, the sensing means comprising means on the head or probe to generate a magnetic field and means on the probe or head capable of providing a signal in response to said magnetic field when the head and probe are in said predetermined relative position.
Claim 3
Dependent Claim
20 words
A machine according to claim 1 including a magnet on the probe and a magnetically-sensitive reed switch on the head.
Claim 4
Dependent Claim
46 words
A machine according to claim 2 wherein the probe carries a piston slidable within a cylinder forming part of the head, the piston being movable in the cylinder by fluid pressure and the piston carrying said magnet, the reed switch being mounted externally of the cylinder.
Claim 5
Dependent Claim
18 words
A machine according to claim 3 wherein said magnet comprises a magnetic collar forming part of the piston.
References Cited (Backward Citations)
US2402723A
Cited
US3074670A
Cited
US3299417A
Cited
US3509515A
Cited
US3747054A
Cited
US3738687A
Cited
US4006761A
Cited
US4195673A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-12-07 | 1985-06-08 | 1985-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-07 | 1989-06-08 | 1989-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-07 | 1993-06-08 | 1993-12-08 | $7700.00 | Window Closed / Lapsed |