US3744934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air compressor
Assignee: Individual
•
Filing: 1971-09-22
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Granted: 1973-07-10
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Expires: 1991-09-22
Abstract
Abstract An air compressor and engine comprising a plurality of independent cylindrical compression chambers, each of said compression chambers having an inlet valve, an exhaust valve and a piston connected by rods to a crank-shaft, said plurality of chambers in two sets, the first set of chambers being greater in number than the second set of chambers, whereby the apparatus serves as an air compressor in which said first set of chambers are adapted for the primary compression chambers for feeding the compressed air to said second set of chambers provided for further compression of the air, or as an air compressor and engine in which said first set of chambers are adapted for the engine by means of suitable switching means, while said second set of chambers for an air compressor, or as an engine in which said first and second sets of chambers are adapted for the engine by means of said switching means.
Inventors
- 👤 T Ueno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:59
CPC Classifications
F; F04; F04C; F04C23/00; F04C23/001; F04B; F04B25/00; F04B27/00; F04B39/00; F04B39/08; F02; F02B; F02B75/00; F02B75/02; F02B2075/022; F02B2075/027; Y; Y10; Y10S; Y10S123/00; Y10S123/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
437 words
A combination air compressor and engine apparatus comprising a body having a plurality of cylindrical bores, the bores providing first and second sets of compression chambers, each of the sets having a plurality of compression chambers and the first set having more compression chambers than the second set, each of the compression chambers being provided with an inlet and an outlet opening, an inlet valve and an outlet valve mounted in the body for each compression chamber for opening and closing the inlet and outlet openings, a piston reciprocably mounted within each compression chamber, crank shaft means rotatably mounted in the body and connected to the pistons for reciprocating the pistons, a first cam shaft axially adjustable and rotatably mounted on the body and associated with the first set of compression chambers and a second cam shaft axially adjustable and rotatably mounted on the body and associated with the second set of compression chambers, each of the cam shafts being operatively connected to the crank shaft to be rotated thereby, a pair of cams for each inlet valve and each outlet valve for each compression chamber of the first set mounted on the first cam shaft and a pair of cams for each inlet valve and each outlet valve for each compression chamber of the second set mounted on the second cam shaft, each pair of cams comprising spaced-apart engine and compressor cams, each engine and compressor cam of each pair having an inclined cam face facing the other cam of the pair and adapted to engage tappet means, and tappet means reciprocably mounted on the engine for each inlet and each outlet valve for opening and closing the valves, each cam shaft being independently axially adjustable between a first position in which the engine cams of each pair of cams on the cam shaft engage the tappet means and a second position in which the compressor cams of each pair of cams on the cam shaft engage the tappet means, the cam surface of each of the engine cams adapted to reciprocate the tappet means once during each revolution of the associated cam shaft and the cam surface of each of the compressor cams adapted to reciprocate the tappet means twice during each revolution of the associated cam shaft whereby the apparatus may be operated as an engine by moving each cam shaft into the first position and as a compressor by moving each cam shaft into the second position and as a combination engine and compressor by moving the first cam shaft into the first position and the second cam shaft into the second position.
Claim 2
Dependent Claim
437 words
A combination air compressor and engine apparatus comprising a body having a plurality of cylindrical bores, the bores providing first and second sets of compression chambers, each of the sets having a plurality of compression chambers and the first set having more compression chambers than the second set, each of the compression chambers being provided with an inlet and an outlet opening, an inlet valve and an outlet valve mounted in the body for each compression chamber for opening and closing the inlet and outlet openings, a piston reciprocably mounted within each compression chamber, crank shaft means rotatably mounted in the body and connected to the pistons for reciprocating the pistons, a first cam shaft axially adjustable and rotatably mounted on the body and associated with the first set of compression chambers and a second cam shaft axially adjustable and rotatably mounted on the body and associated with the second set of compression chambers, each of the cam shafts being operatively connected to the crank shaft to be rotated thereby, a pair of cams for each inlet valve and each outlet valve for each compression chamber of the first set mounted on the first cam shaft and a pair of cams for each inlet valve and each outlet valve for each compression chamber of the second set mounted on the second cam shaft, each pair of cams comprising spaced-apart engine and compressor cams, each engine and compressor cam of each pair having an inclined cam face facing the other cam of the pair and adapted to engage tappet means, and tappet means reciprocably mounted on the engine for each inlet and each outlet valve for opening and closing the valves, each cam shaft being independently axially adjustable between a first position in which the engine cams of each pair of cams on the cam shaft engage the tappet means and a second position in which the compressor cams of each pair of cams on the cam shaft engage the tappet means, the cam surface of each of the engine cams adapted to reciprocate the tappet means once during each revolution of the associated cam shaft and the cam surface of each of the compressor cams adapted to reciprocate the tappet means twice during each revolution of the associated cam shaft whereby the apparatus may be operated as an engine by moving each cam shaft into the first position and as a compressor by moving each cam shaft into the second position and as a combination engine and compressor by moving the first cam shaft into the first position and the second cam shaft into the second position.
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) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |