US3877248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerant expansion device
Assignee: Carrier Corp
•
Filing: 1974-03-01
•
Granted: 1975-04-15
•
Expires: 1994-03-01
Abstract
Abstract A refrigerant expansion device comprising a body portion having an expansion conduit extending therethrough, the entrance to the device being planar and generally perpendicular to the direction of refrigerant flow, and the length of the device being relatively small.
Inventors
- 👤 Jr Fred V Honnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:13
CPC Classifications
F; F25; F25B; F25B41/00; F25B41/30; F25B2500/00; F25B2500/01
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
93 words
In a compression refrigeration system including a compressor, a condenser and an evaporator connected in a refrigeration circuit, a refrigerant expansion device for expanding refrigerant flowing from the condenser to the evaporator, said refrigerant expansion device comprising: an elongate body portion having a planar surface generally perpendicular to the direction of refrigerant flow; and an expansion conduit commencing at said planar surface and extending through said body portion said conduit having a cylindrical bore of uniform diameter; the length of said conduit being from 5 to 12 times the diameter of said conduit.
Claim 2
Dependent Claim
93 words
In a compression refrigeration system including a compressor, a condenser and an evaporator connected in a refrigeration circuit, a refrigerant expansion device for expanding refrigerant flowing from the condenser to the evaporator, said refrigerant expansion device comprising: an elongate body portion having a planar surface generally perpendicular to the direction of refrigerant flow; and an expansion conduit commencing at said planar surface and extending through said body portion said conduit having a cylindrical bore of uniform diameter; the length of said conduit being from 5 to 12 times the diameter of said conduit.
Claim 3
Dependent Claim
35 words
The invention according to claim 1 wherein said body portion comprises a portion of a unitary coupling member for connecting a refrigerant line leading from the condenser to a refrigerant line leading to the evaporator.
Claim 4
Dependent Claim
17 words
The invention according to claim 1 wherein the length of said conduit is less than one inch.
Claim 5
Dependent Claim
15 words
The invention according to claim 3 wherein the length of said conduit is 0.5 inch.
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) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |