US3976458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigeration means
Assignee: Individual
•
Filing: 1975-02-18
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Granted: 1976-08-24
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Expires: 1995-02-18
Abstract
Abstract In an engine powered vehicle having a generator, a storage battery, and a refrigerated compartment having a refrigerated cooling coil, a compressor is connected to the cooling coil, the condensor is connected to the compressor. A refrigerant expansion means is connected to the compressor and to the cooling coil. In one embodiment a second compressor is operatively connected to the vehicle engine; in another a second condensor is connected to the second compressor, and in another the refrigeration system includes a third compressor connected in parallel with the first compressor and the second compressor. A second condensor, a second means to expand refrigerant, and a second cooling coil is connected with the third compressor to refrigerate two separate compartments. Each embodiment preferably has a control to operate the systems relative to the refrigeration demand of the system.
Inventors
- 👤 Laurence M. Krug
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:29
CPC Classifications
B; B60; B60D; B60D1/00; B60D1/24; B60D1/242; B60H; B60H1/00; B60H1/32; B60H1/3204; B60H1/3205; B60H1/3216; B60H1/3219; F; F25; F25B; F25B31/00; B60H2001/3236; B60H2001/3239; B60H2001/3242; B60H2001/3248; B60H2001/3252; B60H2001/3255; B60H2001/3261; B60H2001/3263; B60H2001/3269; B60H2001/327; B60H2001/3276; B60H2001/3277; B60H2001/3279; B60H2001/328; B60H2001/3282; B60H2001/3285; B60H2001/3286; B60H2001/3292; B60H2001/3295; F25B2400/00; F25B2400/07; F25B2400/075
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
431 words
In an engine powered vehicle having a storage battery and a geneerator connected to said engine and battery and a refrigerated compartment and a refrigeration system therefor including a cooling coil, a compressor connected by a conduit to the outlet of said cooling coil, an alternating current motor operatively connected to said compressor, a condensor connected by conduit to the outlet of said compressor and to the inlet of said cooling coil, and an expansion valve to adiabatically expand a refrigerant in the conduit to said cooling coil, the improvement comprising: a. a second compressor mounted on said vehicle, said second compressor connected by conduit to said condensor and to said cooling coil in parallel with said first named compressor, b. means operatively connecting said second compressor to said vehicle engine to be driven by said engine when said engine is in operation, said second compressor having a clutch means to operably connect and disconnect said second compressor and said engine, c. control means operatively connected to said system to intermittently operate said second compressor relative to the refrigeration demand of said system when said engine is operating and to intermittently operate said first named compressor relative to the refrigeration demand of the system when said alternating current is connected to a source of alternating current electric power, d. said control means having a thermostat switch means communicably connected to said cooling unit, said thermostat switch being electrically connected to said alternating current electric motor to intermittenly operate same, and being electrically connected to said clutch means to intermittently engage same, e. a first check valve means communicably connected to said conduit from said outlet to said first named compressor to compress fluids from said first named compressor to said condensor, f. a second check valve means connected to the outlet of said second compressor to pass fluid from said second compressor to said condensor, g. a first solenoid actuated valve means communicably connected in said conduit between said cooling coil and said second compressor and electrically connected to said control means, h. a second solenoid actuated valve means communicably connected in said conduit between said second compressor and said condensor and electrically connected to said control means, said control means being operable to close said firt solenoid actuated valve and said second solenoid actuated valve when said alternating current motor is connected to a source of electricity, and i. said second compressor is constructed and adapted to be operable during periods when said alternating current motor is disconnected from a source of alternating current electricity and said vehicle engine operating.
Claim 2
Dependent Claim
431 words
In an engine powered vehicle having a storage battery and a geneerator connected to said engine and battery and a refrigerated compartment and a refrigeration system therefor including a cooling coil, a compressor connected by a conduit to the outlet of said cooling coil, an alternating current motor operatively connected to said compressor, a condensor connected by conduit to the outlet of said compressor and to the inlet of said cooling coil, and an expansion valve to adiabatically expand a refrigerant in the conduit to said cooling coil, the improvement comprising: a. a second compressor mounted on said vehicle, said second compressor connected by conduit to said condensor and to said cooling coil in parallel with said first named compressor, b. means operatively connecting said second compressor to said vehicle engine to be driven by said engine when said engine is in operation, said second compressor having a clutch means to operably connect and disconnect said second compressor and said engine, c. control means operatively connected to said system to intermittently operate said second compressor relative to the refrigeration demand of said system when said engine is operating and to intermittently operate said first named compressor relative to the refrigeration demand of the system when said alternating current is connected to a source of alternating current electric power, d. said control means having a thermostat switch means communicably connected to said cooling unit, said thermostat switch being electrically connected to said alternating current electric motor to intermittenly operate same, and being electrically connected to said clutch means to intermittently engage same, e. a first check valve means communicably connected to said conduit from said outlet to said first named compressor to compress fluids from said first named compressor to said condensor, f. a second check valve means connected to the outlet of said second compressor to pass fluid from said second compressor to said condensor, g. a first solenoid actuated valve means communicably connected in said conduit between said cooling coil and said second compressor and electrically connected to said control means, h. a second solenoid actuated valve means communicably connected in said conduit between said second compressor and said condensor and electrically connected to said control means, said control means being operable to close said firt solenoid actuated valve and said second solenoid actuated valve when said alternating current motor is connected to a source of electricity, and i. said second compressor is constructed and adapted to be operable during periods when said alternating current motor is disconnected from a source of alternating current electricity and said vehicle engine operating.
Claim 3
Dependent Claim
24 words
The refrigeration means of claim 1, wherein: a. a second condensor is interposed in said conduit between said second compressor and said expansion valve.
Claim 4
Dependent Claim
30 words
The refrigeration means of claim 2, wherein: a. a third check valve means is communicably connected in said conduit between said second solenoid actuated valve means and said second condensor.
Claim 5
Dependent Claim
26 words
The refrigeration means of claim 1, wherein: a. a third compressor is communicably connected by conduit and parallel to said first compressor and said second compressor.
Claim 6
Dependent Claim
62 words
The refrigeration means of claim 4, wherein: a. a third check valve means communicably connected in said conduit between said outlet of said third compressor and said second condensor, and b. a fourth check valve mean communicably connected in said conduit between the outlet of said second compressor and said second conduit between said third check valve means and said second condensor.
Claim 7
Dependent Claim
63 words
The refrigeration means of claim 5, wherein: a. a third solenoid actuated valve means is communicably connected in said conduit between said first compressor and said second compressor and electrically connected to said control means, and b. a fourth solenoid actuated valve means communicably connected in said conduit between said third compressor and said second compressor and electrically connected to said control mean.
Claim 8
Dependent Claim
40 words
The refrigeration means of claim 1, wherein, an evaporator pressure regulator means is communicably connected in said conduit between said first compressor and said first solenoid actuator valve means to regulate the pressure at the inlet of said second compressor.
Claim 9
Dependent Claim
28 words
The refrigeration means of claim 1, wherein, a crankcase pressure regulator is communicably connected in said conduit between said second compressor and said second solenoid actuator valve means.
Claim 10
Dependent Claim
54 words
The refrigeration means of claim 1, wherein, an excess vacuum control valve means is communicably connected in said conduit between said solenoid actuator valve means and said second compressor and electrically connected to said control means to stop fluid flow through same said conduit when vacuum therein drops below a predetermined and certain value.
Claim 11
Dependent Claim
139 words
The refrigeration means of claim 1, wherein: a. an evaporator pressure regulator means is communicably connected in said conduit between said first compressor and said first solenoid actuator valve means to regulate the pressure at the inlet of said second compressor, b. a crankcase pressure regulator is communicably connected in said conduit between said second compressor and said second solenoid actuated valve means and communicably connected to said conduit between said first solenoid actuated valve means and said second compressor to regulate the pressure in said conduit into said condensor, and c. an excess vacuum control valve means is communicably connected in said conduit between said solenoid actuated valve means and said second compressor and electrically connected to said control means to stop fluid flow through same said conduit when vacuum therein drops below a predetermined and certain value.
Claim 12
Dependent Claim
100 words
The refrigeration means of claim 6, wherein: a. a first evaporator pressure regulator means is communicably connected in said conduit between said first compressor and said third solenoid actuated control valve to regulate the pressure at the inlet of said second compressor when in use fluid is drawn from said first cooling coil, and b. a second evaporator pressure regulator means is communicably connected in said conduit between said third compressor and said fourth solenoid actuated valve means to regulate the pressure at the inlet of said second compressor when in use fluid is drawn from said second cooling coil.
Claim 13
Dependent Claim
44 words
The refrigeration means of claim 6, wherein, a crankcase pressure regulator means is communicably connected in the outlet conduit of said second compressor and communicably connected to the inlet conduit of said second compressor to in use regulate the inlet pressure at said condensors.
Claim 14
Dependent Claim
59 words
The refrigeration means of claim 6, wherein, an excess vacuum control valve means is communicably connected in said conduit between said second compressor and said third solenoid actuated control valve means and said fourth solenoid actuating control valve means to in use stop fluid flow through same said conduit when vacuum therein drops below a predetermined and certain value.
Claim 15
Dependent Claim
191 words
The refrigeration means of claim 6, wherein: a. a first evaporator pressure regulator means is communicably connected in said conduit between said first compressor and said third solenoid actuated control valve to regulate the pressure at the inlet of said second compressor when in use fluid is drawn from said first cooling coil, b. a second evaporator pressure regulator means is communicably connected in said conduit between said third compressor and said fourth solenoid actuated valve means to regulate the pressure at the inlet of said second compressor when in use fluid is drawn from said second cooling coil, c. a crankcase pressure regulator means is communicably connected in the outlet conduit of said second compressor and communicably connected to the inlet conduit of said second compressor to in use regulate the inlet pressure at said condensors, and d. an excess vacuum control valve means is communicably connected in said conduit between said second compressor and said third solenoid actuated control valve means and said fourth solenoid actuated control valve means to in use stop fluid flow through same said conduit when vacuum therein drops below a predetermined and certain value.
Claim 16
Dependent Claim
53 words
The refrigeration means of claim 6, wherein, said refrigeration means has a cooling fan for cooling said first condensor, said cooling fan having a direct current electric motor and being electrically connected to said control means to in use be operated when either said first compressor or said second compressor are in operation.
Claim 17
Dependent Claim
64 words
The refrigeration means of claim 6, wherein: a. said first cooling coil is mounted in a refrigerated compartment which in operation is maintained within a predetermined and certain temperature range, and b. said second cooling coil is mounted in another refrigerated compartment separate from said first refrigerated compartment to in use maintain said second named refrigerated compartment within a predetermined and certain temperature range.
References Cited (Backward Citations)
US3633377A
Cited
US3885398A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-24 | 1980-02-23 | 1980-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-24 | 1984-02-23 | 1984-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-24 | 1988-02-23 | 1988-08-24 | $7700.00 | Window Closed / Lapsed |