US2832204A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquefied petroleum gas heat exchanger and pressure regulator
Assignee: Individual
•
Filing: 1953-08-17
•
Granted: 1958-04-29
•
Expires: 1973-08-17
Abstract
No abstract record available.
Inventors
- 👤 Frank E Pilling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:35
CPC Classifications
F; F02; F02M; F02M21/00; F02B; F02B43/00; F02M2700/00; F02M2700/12; F02M2700/126; Y; Y10; Y10T; Y10T137/00; Y10T137/6416; Y10T137/6579; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7795; Y10T137/7809; Y10T137/782
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A LIQUEFIED PETROLEUM GAS HEAT EXCHANGER FOR CONVERTING LIQUEFIED PETROLEUM GAS INTO VAPORIZED PETROLEUM GAS COMPRISING A SOURCE OF LIQUEFIED PETROLEUM GAS, A GENERALLY SPIRAL SHAPED DUCT, A FIRST INLET VALVE FOR PERMITTING FLOW OF SAID LIQUEFIED PETROLEUM INTO SAID DUCT, A SECOND GENERALLY SPIRAL SHAPED DUCT SHAPED TO MATCH SAID FIRST DUCT AND ARRANGED CONTIGUOUS THERETO, MEANS FOR CIRCULATING HEATED WATER IN SAID SECOND DUCT, A CLOSED CHAMBER HAVING AN OUTLET PORT, MEANS RESPONSIVE TO PRESSURE IN SAID CHAMBER FOR ACTUATING SAID FIRST INLET VALVE, A SECOND INLET VALVE COMMUNICATING SAID FIRST DUCT WITH SAID CHAMBER AND PRESSURE RESPONSIVE MEANS FOR CONTROLLING SAID SECOND INLET VALVE TO THEREBY VAPORIZE SAID LIQUEFIED PETROLEUM GAS AND CONTROL THE PRESSURE OF SAID GAS AS IT LEAVES SAID CHAMBER THROUGH SAID OUTLET PORT.
Claim 2
Dependent Claim
130 words
A LIQUEFIED PETROLEUM GAS HEAT EXCHANGER FOR CONVERTING LIQUEFIED PETROLEUM GAS INTO VAPORIZED PETROLEUM GAS COMPRISING A SOURCE OF LIQUEFIED PETROLEUM GAS, A GENERALLY SPIRAL SHAPED DUCT, A FIRST INLET VALVE FOR PERMITTING FLOW OF SAID LIQUEFIED PETROLEUM INTO SAID DUCT, A SECOND GENERALLY SPIRAL SHAPED DUCT SHAPED TO MATCH SAID FIRST DUCT AND ARRANGED CONTIGUOUS THERETO, MEANS FOR CIRCULATING HEATED WATER IN SAID SECOND DUCT, A CLOSED CHAMBER HAVING AN OUTLET PORT, MEANS RESPONSIVE TO PRESSURE IN SAID CHAMBER FOR ACTUATING SAID FIRST INLET VALVE, A SECOND INLET VALVE COMMUNICATING SAID FIRST DUCT WITH SAID CHAMBER AND PRESSURE RESPONSIVE MEANS FOR CONTROLLING SAID SECOND INLET VALVE TO THEREBY VAPORIZE SAID LIQUEFIED PETROLEUM GAS AND CONTROL THE PRESSURE OF SAID GAS AS IT LEAVES SAID CHAMBER THROUGH SAID OUTLET PORT.
References Cited (Backward Citations)
US2272341A
Cited
US2475087A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-28 | 1961-10-28 | 1962-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-28 | 1965-10-28 | 1966-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-28 | 1969-10-28 | 1970-04-29 | $7700.00 | Window Closed / Lapsed |