US3785164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Precharged receiver drier for automobile air conditioning systems
Assignee: VIRGINIA KMP Corp A CORP OF TX
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Filing: 1972-05-17
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Granted: 1974-01-15
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Expires: 1992-05-17
Abstract
Abstract A precharged receiver drier unit for automobile air conditioning systems, including a molecular seive and an axially reciprocable valve fitting for connection to the automobile refrigerant system. The valve fitting seals the refrigerant system in one attitude as the spent receiver drier is removed and opens the refrigerant system in another attitude, as the fresh receiver drier is threadedly attached to the valve fitting.
Inventors
- 👤 G Wrenn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:39
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: 9
Claim 1
Independent Claim
283 words
A precharged receiver drier of the type adapted for fitting in automobile air conditioning systems comprising: A. a receiver drier housing (10) embodying: i. a connector fitting port (14); ii. a seive (38) medially positioned within said housing; iii. an induction tube (15) extending co-axially through said connector fitting port and said seive, said tube at its bottom opening into said housing; iv. a bottom compression means (B) supported intermediate the bottom of said induction tube and said housing bottom; and v. a first sealing means (34) positioned upon said induction tube so as to seal said connector fitting port and a second sealing means (40) independently mounted in said housing, so as to seal the bottom of said induction tube. B. A valve connector (12) having an axial core and threadedly engaging said connector fitting port and further including: i. superposed inlet (19) and outlet (18) ports communicating with said axial core; ii. a plunger valve (16) positioned in said core, so as to be axially aligned with said induction tube, said plunger being axially reciprocable to open said ports with respect to said induction tube and said receiver drier housing and having an outlet seal encircling said plunger and engaging the interior wall of said core adjacent said outlet port and an inlet seal encircling said plunger and engaging the interior wall of said core adjacent said inlet port; iii. an axial float (23) reciprocably mounted within said plunger valve; and iv. a top compression means (A) intermediate said plunger top and the top of said connector. C. A refrigerant seive (45, 47) mounted in said housing above said second seal and said bottom compression means and including an associated screen.
Claim 2
Dependent Claim
283 words
A precharged receiver drier of the type adapted for fitting in automobile air conditioning systems comprising: A. a receiver drier housing (10) embodying: i. a connector fitting port (14); ii. a seive (38) medially positioned within said housing; iii. an induction tube (15) extending co-axially through said connector fitting port and said seive, said tube at its bottom opening into said housing; iv. a bottom compression means (B) supported intermediate the bottom of said induction tube and said housing bottom; and v. a first sealing means (34) positioned upon said induction tube so as to seal said connector fitting port and a second sealing means (40) independently mounted in said housing, so as to seal the bottom of said induction tube. B. A valve connector (12) having an axial core and threadedly engaging said connector fitting port and further including: i. superposed inlet (19) and outlet (18) ports communicating with said axial core; ii. a plunger valve (16) positioned in said core, so as to be axially aligned with said induction tube, said plunger being axially reciprocable to open said ports with respect to said induction tube and said receiver drier housing and having an outlet seal encircling said plunger and engaging the interior wall of said core adjacent said outlet port and an inlet seal encircling said plunger and engaging the interior wall of said core adjacent said inlet port; iii. an axial float (23) reciprocably mounted within said plunger valve; and iv. a top compression means (A) intermediate said plunger top and the top of said connector. C. A refrigerant seive (45, 47) mounted in said housing above said second seal and said bottom compression means and including an associated screen.
Claim 3
Dependent Claim
64 words
A precharged receiver drier of the type adapted for fitting in automobile air conditioning systems as in claim 1, said outlet seal including a pair of axially spaced O-rings positionable on either side of said outlet upon axial reciprocation of said plunger and said inlet seal including a pair of O-rings positionable on either side of said inlet upon axial reciprocation of said plunger.
Claim 4
Dependent Claim
41 words
A precharged receiver drier of the type adapted for fitting in automobile air conditioning systems as in claim 2, said plunger including an inner, axial core extending into said induction tube and having a lateral port registrable with said outlet port.
Claim 5
Dependent Claim
32 words
A precharged receiver drier of the type adapted for fitting in automobile air conditioning systems as in claim 3, said plunger having a reduced diameter lower portion registrable with said inlet port.
Claim 6
Dependent Claim
30 words
A precharged receiver drier of the type adapted for fitting in automobile air conditioning systems as in claim 4, said inlet and outlet ports extending laterally from said valve connector.
Claim 7
Dependent Claim
63 words
A precharged receiver drier of the type adapted for fitting in automobile air conditioning systems as in claim 5, said valve connector including swivel nut means engaging said valve connector port and said valve connector so as to compress said valve connector and said plunger valve with respect to said housing, while axially depressing said induction tube bottom end beneath said bottom seal.
Claim 8
Dependent Claim
45 words
A precharged receiver drier of the type adapted for fitting in automobile air conditioning systems as in claim 1, said valve connector including a transparent sight glass top and said float including a moisture indicating means at its top and visible through said sight glass.
Claim 9
Dependent Claim
40 words
A precharged receiver drier of the type adapted for fitting in automobile air conditioning systems as in claim 7, said plunger valve including at its bottom end a retainer supporting said float within said plunger and above said induction tube.
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) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |