Patent US4148198A successfully refreshed from Google Patents.
US4148198A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigeration charging and sealing device
Assignee: Individual
•
Filing: 1976-10-07
•
Granted: 1979-04-10
•
Expires: 1996-10-07
Abstract
Abstract A capillary tube of long length insertable into a distal end of a process tube from a compressor of a refrigeration unit has a Schraeder fitting attached to a distal end of the capillary tube to charge the compressor, after charging the compressor the proximal tip of the capillary tube can be cut from the capillary tube and fitting and the capillary tube tip can be inserted into a swage block which forms a capillary sealing anvil and a handle with a threaded shaft and capillary tip sealing tip can be threaded into a perpendicular shaftway to seal the capillary, thus reducing the number of fittings that a refrigeration unit compressor charger must carry from refrigeration unit to refrigeration unit.
Inventors
- 👤 Robert S. Kregoski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:33
CPC Classifications
F; F25; F25B; F25B45/00; F25B2345/00; F25B2345/001; F25B2345/006
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
52 words
A refrigeration charging and sealing device, comprising: a process tube of a refrigeration unit, a capillary tube insertable in a distal end of the process tube, means of sealing the capillary tube into the process tube, and means of connecting a distal end of the capillary tube to a compressor charging device.
Claim 2
Dependent Claim
52 words
A refrigeration charging and sealing device, comprising: a process tube of a refrigeration unit, a capillary tube insertable in a distal end of the process tube, means of sealing the capillary tube into the process tube, and means of connecting a distal end of the capillary tube to a compressor charging device.
Claim 3
Dependent Claim
20 words
The device of claim 1, wherein the means of sealing the capillary tube to the process tube is silver brazing.
Claim 4
Dependent Claim
34 words
The device of claim 2, wherein the means of connecting the distal end of the capillary tube to the charging device comprises a Schraeder fitting attached to the distal end of the capillary tube.
Claim 5
Dependent Claim
52 words
The device of claim 3, further comprising: a swage block forming a shaftway mountable over a proximal tip of the capillary tube after the proximal tip of the capillary tube has been severed from the capillary tube, and means of sealing the proximal end of the capillary tube within the swage block.
Claim 6
Dependent Claim
124 words
The device of claim 4, wherein the means of sealing the capillary tube within the swage block comprises: the swage block forming a perpendicular threaded shaftway, a shaft forming a threaded lower portion engageable with the threaded shaftway and forming a tube sealing tip engageable with the capillary tube tip, a portion of the capillary tube receiving shaftway under the threaded shaftway forming a capillary tube sealing anvil, and a handle attached to an upper end of the shaft, whereby the threaded portion of the shaft may be forceably engaged with the threaded shaftway driving the capillary tube sealing tip into engagement with the capillary tube tip and driving the capillary tube tip into engagement with the anvil to seal the capillary tube tip.
References Cited (Backward Citations)
US2181854A
Cited
US2273213A
Cited
US2430995A
Cited
US3145465A
Cited
US3842652A
Cited
US3795262A
Cited
US3813893A
Cited
US3976110A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-04-09 | 1982-10-09 | 1983-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-09 | 1986-10-09 | 1987-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-09 | 1990-10-09 | 1991-04-10 | $7700.00 | Window Closed / Lapsed |