Patent US2623664A successfully refreshed from Google Patents.
Patent US3901093A successfully refreshed from Google Patents.
US3901093A
Expired / Lapsed
US
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Axial piston machine
Assignee: Individual
•
Filing: 1973-07-24
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Granted: 1975-08-26
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Expires: 1993-07-24
Abstract
Abstract A volumetric machine of the barrel or axial piston type includes pistons which rest on an oblique pivoting swash-plate which in turn drives the crank of a driving or driven shaft. The pivoting of the swash-plate is defined by a two-nappe frustrum of cone integral with the swash-plate and rolling, without sliding, on a stationary two-nappe frustrum of cone angularly integral with the frame of the machine. The two-nappe frustrums of cone have as their common generatrix the bisectrix of the obtuse angle defined by the axis of the machine and the axis of the swash-plate.
Inventors
- 👤 Maurice G Brille
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:43
CPC Classifications
F; F04; F04B; F04B1/00; F04B1/12; F04B1/26; F04B1/28; F01; F01B; F01B3/00; F01B3/02; F02; F02B; F02B75/00; F02B75/04; F02B75/26; F04B27/00; F04B27/08; F16; F16H; F16H23/00; F16H23/04; F16H23/08; F02B75/02; F02B2075/022; F02B2075/025; F02B3/00; F02B3/06; F16H1/00; F16H1/28; F16H1/32; F16H1/321; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18296; Y10T74/18336
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
101 words
A volumetric machine of the so-called barrel or axial piston type, including pistons which rest on an oblique pivoting swashplate, characterized in that the pivoting swash-plate drives the crank of a driving or driven shaft, the pivoting of said swashplate being defined by a two-nappe frustum of cone integral with the swash-plate and rolling, without sliding, on a stationary two-nappe frustum of cone angularly integral with the frame of the machine, the two two-nappe frustums of cone having as their common generatrix the bisectrix of the obtuse angle defined by the axis of the machine and the axis of the swash-plate.
Claim 2
Dependent Claim
101 words
A volumetric machine of the so-called barrel or axial piston type, including pistons which rest on an oblique pivoting swashplate, characterized in that the pivoting swash-plate drives the crank of a driving or driven shaft, the pivoting of said swashplate being defined by a two-nappe frustum of cone integral with the swash-plate and rolling, without sliding, on a stationary two-nappe frustum of cone angularly integral with the frame of the machine, the two two-nappe frustums of cone having as their common generatrix the bisectrix of the obtuse angle defined by the axis of the machine and the axis of the swash-plate.
Claim 3
Dependent Claim
81 words
A volumetric machine according to claim 1, characterized in that the four frustums of cone coupled by twos are each split up into a conical gear for rotative positioning, the pitch cone of which is the cone considered, and a frustum of cone for the bearing and positioning of the apex, with an apex angle definitely smaller than that of the cone considered, the surface of said bearing frustum of cone extending beyond either side of the frustum of cone considered.
Claim 4
Dependent Claim
89 words
A volumetric machine according to claim 2, characterized in that the stationary two-nappe frustrum of cone is comprised of two elements each carrying gearing for rotation positioning and an acute bearing frustum of cone, while they are adapted to be rotatingly adjusted with respect to each other so as to remove the play of the gearings, and even create a certain rotation pre-stress, and adjusted, besides, in translation with respect to each other so as to remove the play of the bearings, and even create a certain bearing pre-stress.
Claim 5
Dependent Claim
98 words
A volumetric machine according to claim 3 characterized in that the assembly of the two elements coaxial to the frame of the machine is carried by a spring which allow a slight axial displacement thereof, which leads to the same displacement of the swash-plate and the driving shaft, this displacement being created by the value of the mean axial thrust of the pistons, hence the value of the effective mean pressure on the pistons, and producing thus compression chamber heights, hence volumes, the greater as the effective mean pressure is stronger, and, therefore, all the lower compression ratios.
Claim 6
Dependent Claim
64 words
A volumetric machine according to claim 4, characterized in that the axial displacement is dampened by the lubrication oil trapped between the frame and the piston integral with the movable assembly, which oil goes in through a nozzle and a non-return valve, and comes out through calibrated jets to lubricate the mechanisms, the calibres of the jets allowing to adjust the amount of dampening.
Claim 7
Dependent Claim
87 words
A volumetric machine according to claim 4, characterized in that the base of the bearing spring is adapted to be axially displaced by the rotation of a nut which is remotely controlled from the outside, so as to modify the mean compression ratio of the engine, while said drive for the nut may be manual to adapt said ratio to various fuels having different octane numbers or volatilities, or brought under the control of a thermometric device to adapt said ratio to the atmospheric or starting conditions.
Claim 8
Dependent Claim
97 words
A volumetric machine according to claim 1, characterized in that it includes a flywheel opposed to the driving or driven flywheel and running at the same speed as the latter while carrying masses for balancing the inertia torque, said balancing flywheel being controlled by an intermediate shaft parallel to the driving shaft and running at any speed, while being connected to the two shafts of the two flywheels by pairs of gearings having identical gear ratios, said intermediate shaft passing through the gap between two arms of the swash-plate and the gap between the two corresponding cylinders.
Claim 9
Dependent Claim
94 words
A barrel or axial piston volumetric machine according to claim 1, characterized in that the connection of each piston P to the periphery 47 of the swash-plate is ensured by two pairs of smooth cones (82 and 88 on the rod 93 of tHe piston P, and 80 and 89 on the swash-plate 47) which roll on each other and are mounted in opposition, so that they ensure both the accurate positioning of the theoretical point of articulation O and the transmission - through rolling - of the all the load and inertia stresses.
Claim 10
Dependent Claim
78 words
A volumetric machine according to claim 8, characterized in that the two segments of the contact generatrices of the two pairs of frustums of cone straddle the isospeed straight line KK'', bisectrix of the angle Alpha of the two basic cones 80, 82 or 88, 89 and defining an angle (90* - Alpha /2) with the axis of the cylinder, Alpha being the angle of the axis y''y of the swash-plate to the axis x''x of the cylinder.
Claim 11
Dependent Claim
42 words
A volumetric machine according to claim 8, characterized in that the male cones 80 and 89 are both fixed on the swash-plate 47, while the female cones 82 and 88 are both fixed on the connecting rod 93 of the piston P.
Claim 12
Dependent Claim
121 words
A volumetric machine according to claim 8, characterized in that the two pairs of smooth cones include: one female conical rolling surface 82 integral with the rod 93 and converging towards the piston P; one male conical rolling surface 80 integral with the swash-plate 47 and converging towards the piston P, while rolling inside the face 82, with which it is constantly in contact through one and only generatrix; one female conical rolling surface 88 integral with the rod 93 and diverging towards the piston P; one male conical rolling surface 89 integral with the swash-plate 47 and diverging towards the piston P, while rolling inside the face 88, with which it is constantly in contact through one and only generatrix.
Claim 13
Dependent Claim
41 words
A volumetric machine according to claim 8, characterized in that the two female cones 82 and 88 are fixed to the connecting-rod 93 of the piston P, while the male cones 80 and 89 are both fixed to the swash-plate 47.
Claim 14
Dependent Claim
66 words
A volumetric machine according to claim 11, characterized in that the female conical rolling surfaces 82 and 88 are coaxial, and axially off-set with respect to each other, the face 82 being nearer to the piston P as the face 88, so as to define between them a gap in which the two conical faces 80 and 89 of the swash-plate 47 are housed in opposition.
Claim 15
Dependent Claim
58 words
A volumetric machine according to claim 11, characterized in that the annular frustoconical track defined by the rolling face 82 has an outer diameter lower than the inner diameter of the annular frustoconical track defined by the rolling face 88, which allows housing a socket 90 between said two tracks, said socket being integral with the swash-plate 47.
Claim 16
Dependent Claim
43 words
A volumetric machine according to claim 9, characterized in that the isospeed straight line KK'' defines with the generatrix of contact of the conjugated cones 88 and 89 an angle greater than 20*, and thus greater than the jamming angle of the mechanism.
Claim 17
Dependent Claim
36 words
A volumetric machine according to claim 8, characterized in that the mean rolling diameters of each pair of cones 80, 82 and 88, 89 are equal, so that the connecting-rod 93 does not turn on itself.
Claim 18
Dependent Claim
35 words
A volumetric machine according to claim 8, characterized in that the mean rolling diameters of each pair of cones 80. 82 and 88, 89 are unequal, so that the connecting-rod 93 turns slowly on itself.
Claim 19
Dependent Claim
39 words
A volumetric machine according to claim 8, characterized in that the angle (angle of the actual axis PO'' of the rod 81 with respect to the theoretical axis PO'''' of the cylinder) is lower than, or equal to 3*.
Claim 20
Dependent Claim
78 words
A volumetric machine according to claim 8, characterized in that each piston P is rigidly fixed to its connecting rod 93 which is coaxial thereto, the bearing of the piston P on the cylinder 95 being spherical as well as that of the single compression ring 97, while an oil scraper-ring 99 is carried by a counter-piston 100 which slides within the cylinder 95 and receives, through a spherical joinT, the rear face of the oscillating piston P.
Claim 21
Dependent Claim
76 words
A volumetric machine according to claim 8, characterized in that each piston P is rigidly fixed to its connecting rod 93 which is axial thereto, the bearing of the piston P on the cylinder 95 being conical, while that of its compression ring 97 is spherical, an oil scraper-ring 99 being carried by a counter-piston 100 which slides within the cylinder 95 and receives, through a spherical joint, the rear face of the oscillating piston P.
Claim 22
Dependent Claim
45 words
A volumetric machine according to claim 20, characterized in that the frustoconical bearing of the piston P on the cylinder 95 has an apex half-angle equal to the angle defined by the axis of the connecting-rod 93 with the axis tu of the cylinder 95.
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) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |