Patent US3775973A successfully refreshed from Google Patents.
US3775973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combustion products pressure generators intermittent burner cycle and engines
Assignee: Individual
•
Filing: 1970-05-04
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Granted: 1973-12-04
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Expires: 1990-05-04
Abstract
Abstract This invention comprises improvements in combustion products pressure generators of the intermittent cycle, two stage type, and reciprotating piston engines which use the combustion products the pressure generators produce for power and to drive the air compressors which supply combustion air to the pressure generators. Improvements of the pressure generator include an improved type burner with forced air circulation and dilution of the hot gases with cooler air making for minimum air pollution. Improvements of the reciprocating piston engines are carbon or other anti-friction material in power piston rings and rod seals. A system of maintaining the power cylinder wall at the highest possible working temperature to cut down on the heat loss from the hot gases to the working parts of the power cylinders. Also, poppet type valves in the cylinder heads to make for minimum clearance. Also, a automatic variable speed governor controlling precision cutoff valve action on the charge valves to the power cylinders. This cutoff action is reversible. Also, an automatic changeover mechanism which changes the automatic governor control to manual throttle control when engine speed falls below predetermined speed, and at the same time changes the engine from compound operation to simple throttle speed. If it again exceeds the predetermined speed, the operation is automatically changed back to the automatic variable speed governor and valve cutoff. The variable speed adjustment is controlled by the manual throttle lever or accelerator pedal which also control the engine throttle valves at low speed. There are mechanical seals on the fan drive shaft where it comes out of the pressure vessel, which is the pressure generator and a cool air blocking system which blocks the hot gases from the area around the seal. This same seal system is also used on the throttle valves.
Inventors
- 👤 P Hudson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:35
CPC Classifications
F; F02; F02G; F02G1/00; F02G1/04; F02G1/043; F02G1/053; F02G1/0535; F02G3/00; F02G2253/00; F02G2253/03
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
97 words
In combination, a multiple cylinder reciprocating piston engine designed to operate on hot pressure fluid medium from a pressure generator, and having a reversible automatic cutoff of the valves controlling the charge to the one-half power cylinders, comprising a means to open the valves, a means to close the valves at the point of cutoff necessary to control the speed of the engine, a means to change the point of cutoff from the valves not opening at all to cutting off at the end of the stroke swiftly and smoothly by a variable cutoff point control means.
Claim 2
Dependent Claim
97 words
In combination, a multiple cylinder reciprocating piston engine designed to operate on hot pressure fluid medium from a pressure generator, and having a reversible automatic cutoff of the valves controlling the charge to the one-half power cylinders, comprising a means to open the valves, a means to close the valves at the point of cutoff necessary to control the speed of the engine, a means to change the point of cutoff from the valves not opening at all to cutting off at the end of the stroke swiftly and smoothly by a variable cutoff point control means.
Claim 3
Dependent Claim
69 words
In combination, a reciprocating piston engine with automatic reversable cutoff as described in claim 1 having an automatic means to disengage the automatic cutoff when the speed of the engine falls below a predetermined speed and reverting the engine to a simple engine controlled by throttle valve alone, if the engine speed again exceeds the predetermined speed then the automatic means again changes the operation back to automatic cutoff.
Claim 4
Dependent Claim
84 words
In combination, a reciprocating piston engine to operate on hot pressure fluid medium produced by combustion products pressure generators, controlled by a variable speed governor with instantly variable range of one to 10 or more, example 100 RPM to 1000 RPM, a means to change said engine from governor control to manual control automatically when said engine speed falls below a predetermined speed; if said engine speed again exceeds the predetermined speed, said automatic means again changes said engine operation back to governor control.
Claim 5
Dependent Claim
84 words
In combination, a reciprocating piston engine to operate on hot pressure fluid medium produced by combustion products pressure generators, controlled by a variable speed governor with instantly variable range of one to 10 or more, example 100 RPM to 1000 RPM, a means to change said engine from governor control to manual control automatically when said engine speed falls below a predetermined speed; if said engine speed again exceeds the predetermined speed, said automatic means again changes said engine operation back to governor control.
Claim 6
Dependent Claim
151 words
In combination, a multiple cylinder reciprocating piston engine designed to operate on hot pressure fluid medium from pressure generators having anti-friction material compression rings on the piston and anti-friction material ring in the piston rod seal and high temperature cooling of the cylinder walls in the power cylinders whereby some of the pistons acts as power pistons and some of the pistons act as air compressors to supply combustion air to said pressure generator, said engine having a reversible automatic cutoff of the valves controlling the charge to the power cylinders comprising a means to open the valves, a means to close the valves at the point of cutoff necessary to control the speed of said engine, a means to change the point of cutoff from valves not opening at all to cutting off at the end of the power stroke swiftly and smoothly by a variable cutoff point control means.
Claim 7
Dependent Claim
151 words
In combination, a multiple cylinder reciprocating piston engine designed to operate on hot pressure fluid medium from pressure generators having anti-friction material compression rings on the piston and anti-friction material ring in the piston rod seal and high temperature cooling of the cylinder walls in the power cylinders whereby some of the pistons acts as power pistons and some of the pistons act as air compressors to supply combustion air to said pressure generator, said engine having a reversible automatic cutoff of the valves controlling the charge to the power cylinders comprising a means to open the valves, a means to close the valves at the point of cutoff necessary to control the speed of said engine, a means to change the point of cutoff from valves not opening at all to cutting off at the end of the power stroke swiftly and smoothly by a variable cutoff point control means.
Claim 8
Dependent Claim
111 words
In combination, a multiple cylinder reciprocating piston engine designed to operate on the hot fluid medium supplied by a multiple of two stage pressure generators, in two pressure ranges at the same time, said engine having a reversible automatic cutoff of the valves controlling the charge to the power cylinders, comprising a means to open the valves, a means to close the valves at the point of cutoff necessary to control the speed of said engine, a means to change the point of cutoff from the valves not opening at all to cutting off at the end of the power stroke swiftly and smoothly by a variable cutoff point control means.
Claim 9
Dependent Claim
111 words
In combination, a multiple cylinder reciprocating piston engine designed to operate on the hot fluid medium supplied by a multiple of two stage pressure generators, in two pressure ranges at the same time, said engine having a reversible automatic cutoff of the valves controlling the charge to the power cylinders, comprising a means to open the valves, a means to close the valves at the point of cutoff necessary to control the speed of said engine, a means to change the point of cutoff from the valves not opening at all to cutting off at the end of the power stroke swiftly and smoothly by a variable cutoff point control means.
Claim 10
Dependent Claim
137 words
In combination, a multiple cylinder reciprocating piston engine, designed to opeRate on the hot pressure fluid medium supplied by a multiple of two stage pressure generators in two pressure ranges at the same time, to have a means of measuring the high pressure charge to the power cylinders taken each stroke in both pressure ranges to be exactly the same volume, said engine having a reversible automatic cutoff of the valves controlling the charge to the power cylinder, comprising a means to open the valves a means to close at the point of cutoff necessary to control the speed of the engine, a means to change the point of cutoff from the valves not opening at all to cutting off at the end of the power stroke swiftly and smoothly by a variable cutoff point control means.
Claim 11
Dependent Claim
137 words
In combination, a multiple cylinder reciprocating piston engine, designed to opeRate on the hot pressure fluid medium supplied by a multiple of two stage pressure generators in two pressure ranges at the same time, to have a means of measuring the high pressure charge to the power cylinders taken each stroke in both pressure ranges to be exactly the same volume, said engine having a reversible automatic cutoff of the valves controlling the charge to the power cylinder, comprising a means to open the valves a means to close at the point of cutoff necessary to control the speed of the engine, a means to change the point of cutoff from the valves not opening at all to cutting off at the end of the power stroke swiftly and smoothly by a variable cutoff point control means.
Claim 12
Dependent Claim
52 words
In combination, a multiple cylinder reciprocating piston engine as described in claim 1, wherein the piston of said engine has compression rings made of heat resistant anti-friction materials so as to need no lubricant, together with a means of controlling the temperature of the cylinder walls at the highest possible workable temperature.
Claim 13
Dependent Claim
55 words
In combination, a multiple cylinder reciprocating piston engine as described in claim 1 wherein the pistons in the power cylinders have compression rings of anti-friction material, a means a maintaining the cylinder walls at the highest possible workable temperatures, and using the exhaust gases to preheat the combustion air to the pressure generators after compression.
Claim 14
Dependent Claim
37 words
In combination, a multiple cylinder reciprocating piston engine as described in claim 4 wherein said engine is a double acting reciprocating engine with poppet valves in the cylinder heads and compressor pistons in place of cross heads.
Claim 15
Dependent Claim
48 words
In combination, a multiple cylinder reciprocating piston engine as described in claim 1 wherein said engine uses the hot exhaust from the power cylinders to preheat the combustion air for the pressure generators after compression, and has a condenser on the exhaust to cut down air polluting emissions.
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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) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |