US3759062A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Receiver drier housing for automobile air conditioning systems
Assignee: VIRGINIA KMP Corp A CORP OF TX
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Filing: 1972-08-14
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Granted: 1973-09-18
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Expires: 1992-08-14
Abstract
Abstract Air conditioning and refrigeration systems, particularly a precharged receiver drier housing, including a valve connector port at the top fittable with a conventional air conditioning or refrigeration system so as to charge the system with a refrigerant gas. The housing includes an axially depressible induction tube extending from the connector port beneath a molecular sieve positioned within the housing. The unit is activated or deactivated with respect to the air conditioning system by simply turning a valve in the connector port. This valve enables convenient and money-saving retention of the refrigeration charge in the air conditioning system, while the filter drier is being replaced and, therefore, has particular application in automobile air conditioning systems.
Inventors
- 👤 G Wrenn
- 👤 W Mann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:52
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/00507; B60H1/00585; F; F17; F17C; F17C5/00; F17C5/02; F25; F25B; F25B43/00; F25B43/003; F25B45/00; F17C2201/00; F17C2201/01; F17C2201/0104; F17C2201/0119; F17C2201/05; F17C2201/058; F17C2205/00; F17C2205/03; F17C2205/0302; F17C2205/0323; F17C2205/0341; F17C2250/00; F17C2250/04; F17C2250/0404; F17C2250/0408; F17C2270/00; F17C2270/01; F17C2270/0165; F17C2270/0168; F17C2270/0178; F25B41/00; F25B41/006
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
112 words
A receiver drier housing of the type adapted for fitting in air conditioning and refrigeration systems, comprising: A. a connector fitting port at one end of said housing and connectable with a closed system; B. a sieve medially positioned within said housing; C. an induction tube extending co-axially through said connector fitting port and said sieve, said tube at its bottom end opening into said housing; D. means of sealing said induction tube intermediate said connector fitting port and said sieve; and E. a bottom compression means supported intermediate a lower portion of said induction tube and said housing bottom, said induction tube being reciprocable within said housing against said compression means.
Claim 2
Dependent Claim
112 words
A receiver drier housing of the type adapted for fitting in air conditioning and refrigeration systems, comprising: A. a connector fitting port at one end of said housing and connectable with a closed system; B. a sieve medially positioned within said housing; C. an induction tube extending co-axially through said connector fitting port and said sieve, said tube at its bottom end opening into said housing; D. means of sealing said induction tube intermediate said connector fitting port and said sieve; and E. a bottom compression means supported intermediate a lower portion of said induction tube and said housing bottom, said induction tube being reciprocable within said housing against said compression means.
Claim 3
Dependent Claim
24 words
A precharged receiver drier housing as in claim 1, including a refrigerant gas contained within said housing and a desiccant supported adjacent said sieve.
Claim 4
Dependent Claim
32 words
A precharged receiver drier housing as in claim 1, including a top sealing means positioned around said induction tube within said connector fitting port, so as to seal said connector fitting port.
Claim 5
Dependent Claim
44 words
A precharged receiver drier housing in claim 1, said sieve being of the molecular type, including desiccant and being mounted in said housing above said bottom compression means and said means of sealing said induction tube and having an associated screen enclosing said desiccant.
Claim 6
Dependent Claim
25 words
A precharged receiver drier housing as in claim 4, said connector fitting port including exterior threads and swivel nut means engageable with a valve connector.
Claim 7
Dependent Claim
36 words
A precharged receiver drier housing as in claim 5, including a liquid level indicating means extending through the top of the housing axially toward said desiccant so as to indicate the liquid level within said housing.
Claim 8
Dependent Claim
36 words
A precharged receiver drier housing as in claim 1, including valve means intersecting said inlet and outlet ports, so as to valve said receiver drier with respect to an automobile refrigeration system communicating with said parts.
Claim 9
Dependent Claim
33 words
A precharged receiver drier housing as in claim 1, said means of sealing said induction tube further comprising a frangible diaphragm engageable with A puncturing probe positioned at the bottom of said housing.
Claim 10
Dependent Claim
39 words
A precharged receiver drier housing as in claim 1, in combination with: A. a valve connector piece having an axially aligned outlet port communicating with said induction tube and a parallel inlet port communicating with said connector fitting port.
Claim 11
Dependent Claim
36 words
A precharged receiver drier housing as in claim 9, including valve means intersecting said inlet and outlet ports, so as to valve said receiver drier with respect to an automobile refrigeration system communicating with said parts.
Claim 12
Dependent Claim
29 words
A precharged receiver drier housing as in claim 10, wherein said valve means intersect both said ports and is rotatable upon a horizontal axis from open to closed positions.
Claim 13
Dependent Claim
14 words
A precharged receiver drier housing as in claim 11, said ports having exterior threads.
Claim 14
Dependent Claim
68 words
A precharged receiver drier housing as in claim 12, said inlet port having an inner shoulder engageable with the top of said induction tube, so as to depress axially said induction tube within said housing as said valve connector is fitted onto said connector fitting port, and so as to remove said top sealing means from said connector fitting port, while urging said frangible diaphragm against said probe.
Claim 15
Dependent Claim
61 words
A precharged receiver drier as in claim 13, including a receiving sleeve positioned at the bottom of said housing, so as to receive said induction tube as it is depressed and said induction tube being plugged at its bottom registering holes in the side of said tube and said sleeve opening said tube to said housing, as said tube is depressed.
Claim 16
Dependent Claim
23 words
A precharged receiver drier as in claim 13, said means sealing said induction tube being mounted adjacent the top of said induction tube.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |