Fluid drive mechanisms and methods

Claim 2

A fluid drive mechanism comprising: main shaft means having operable connecting means at one end only; means journaling the main shaft means for aligned rotation; angularly disposed power transmitting means at least part of which is non-rotatably connected to the main shaft means; power means comprising an array of pistons reciprocably disposed within cylinder means; inlet means by which ingress fluid is delivered to the mechanism; outlet means by which egress fluid passes from the mechanism; fluid flow control and distribution means at least part of which is relatively displaceable in respect to the inlet and outlet means, the fluid flow control and distribution means comprising means receiving the ingress fluid from the inlet means and first internal passageway means selectively delivering ingress fluid sequentially to the pistons of the power means, the angularly disposed power transmitting means and the main shaft means rotating in sequence with displacement of the pistons, the first internal passageway means being sized, shaped and located so as to pass ingress fluid selectively to the pistons substantially without reduction in pressure and without restriction in flow; the fluid flow control and distribution means further comprising second internal passageway means selectively successively accommodating communication of egress fluid from the pistons and means delivering the egress fluid to the outlet means, the second internal passageway means being sized, shaped and located so as to pass the egress fluid selectively to the outlet means substantially without reduction in pressure and without restriction in flow.

Claim 3

A mechanism according to claim 1 wherein the mechanism comprises a fluid pump and the operable connecting means at the one end only of the main shaft means provide power input.

Claim 4

A mechanism according to claim 1 wherein the mechanism comprises a fluid motor and the operable connecting means at the one end only of the main shaft means comprises power take-off means.

Claim 5

A mechanism according to claim 1 wherein at least part of the fluid flow control and distribution means is non-rotatably connected to the shaft means and comprise first port means selectively passing ingress fluid to the pistons successively and second port means selectively passing egress fluid from the pistons.

Claim 6

A fluid drive mechanism comprising: main shaft means exposed at at least one end; means journaling the main shaft means for aligned rotation; angularly disposed power transmitting means at least part of which is non-rotatably connected to the main shaft means; power means comprising an array of pistons reciprocably disposed within cylinder means; inlet means by which ingress fluid is delivered to the mechanism; outlet means by which egress fluid passes from the mechanism; fluid flow control and distribution means comprising means receiving the ingress fluid from the inlet means and first internal passageway means selectively delivering ingress fluid sequentially to the pistons of the power means, the angularly disposed power transmitting means and the main shaft means rotating in sequence with displacement of the pistons, the first internal passageway means being sized, shaped and located so as to pass ingress fluid selectively to the pistons substantially without reduction in pressure and without restriction in flow; the fluid flow control and distribution means further comprising second internal passageway means selectively successively accommodating communication of egress fluid from the pistons and means delivering the egress fluid to the outlet means, the second internal passageway means being sized, shaped and located so as to pass the egress fluid selectively to the outlet means substantially without reduction in pressure and without restriction in flow; at least part of the fluid flow control and distribution means being non-rotatably connected to the shaft means and comprise dynamic annular reservoirs on opposed sides of the fluid flow control and distribution means exerting equal and opposite uniform pressure thereupon to accommodate unencumbered rotation of the fluid flow control and distribution means in response to rotation of the shaft means.

Claim 7

A fluid drive mechanism comprising: main shaft means exposed at at least one end; means journaling the main shaft means for aligned rotation; angularly disposed power transmitting means at least part of which is non-rotatably connected to the main shaft means; power means comprising an array of pistons reciprocably disposed within cylinder means; inlet means by which ingress fluid is delivered to the mechanism; outlet means by which egress fluid passes from the mechanism; fluid flow control and distribution means comprising means receiving the ingress fluid from the inlet means and first internal passageway means selectively delivering ingress fluid sequentially to the pistons of the power means, the angularly disposed power transmitting means and the main shaft means rotating in sequence with displacement of the pistons, the first internal passageway means being sized, shaped and located so as to pass ingress fluid selectively to the pistons substantially without reduction in pressure and without restriction in flow; the fluid flow control and distribution means further comprising second internal passageway means selectively successively accommodating communication of egress fluid from the pistons and means delivering the egress fluid to the outlet means, the second internal passageway means being sized, shaped and located so as to pass the egress fluid selectively to the outlet means substantially without reduction in pressure and without restriction in flow; at least part of the fluid flow control and distribution means being non-rotatably connected to the shaft means and comprise dynamic annular reservoirs on opposed sides of the fluid flow control and distribution means exerting equal and opposite uniform pressure thereupon to accommodate unencumbered rotation of the fluid flow control and distribution means in response to rotation of the shaft means.

Claim 8

A mechanism according to claim 1 wherein the fluid flow control and distribution means comprise stationary flow control means and rotating flow distribution means.

Claim 9

A mechanism according to claim 1 further comprising housing means substantially surrounding and structurally stabilizing the remainder of the mechanism.

Claim 10

A mechanism according to claim 1 wherein the cylinder means comprise an array of equally spaced cylinder bores each eccentrically disposed along a common radius within a cylindrically shaped block, each cylinder bore containing one of said pistons in substantially fluid tight relation.

Claim 11

A mechanism according to claim 8 wherein each piston comprises a spring biased head contiguously engaging the power transmitting means, fluid being selectively communicated to and from the side of each piston not contiguous with the power transmitting means through one end of the associated cylinder bore.

Claim 12

A fluid drive mechanism comprising: main shaft means exposed at at least one end; means journaling the main shaft means for aligned rotation; angularly disposed power transmitting means at least part of which is non-rotatably connected to the main shaft means, the angularly disposed power transmitting means comprise rotating inclined wobble plate means and counterbalance means connected to the wobble plate means; power means comprising an array of pistons reciprocably disposed within cylinder means; inlet means by which ingress fluid is delivered to the mechanism; outlet means by which egress fluid passes from the mechanism; fluid flow control and distribution means comprising means receiving the ingress fluid from the inlet means and first internal passageway means selectively delivering ingress fluid sequentially to the pistons of the power means, the angularly disposed power transmitting means and the main shaft means rotating in sequence with displacement of the pistons, the first internal passageway means being sized, shaped and located so as to pass ingress fluid selectively to the pistons substantially without reduction in pressure and without restriction in flow; the fluid flow control and distribution means further comprising second internal passageway means selectively successively accommodating communication of egress fluid from the pistons and means delivering the egress fluid to the outlet means, the second internal passageway means being sized, shaped and located so as to pass the egress fluid selectively to the outlet means substantially without reduction in pressure and without restriction in flow.

Claim 13

A fluid drive mechanism comprising: main shaft means exposed at at least one end; means journaling the main shaft means for aligned rotation; angularly disposed power transmitting means at least part of which is non-rotatably connected to the main shaft means, the angularly disposed power transmitting means comprise rotating inclined wobble plate means and counterbalance means connected to the wobble plate means; power means comprising an array of pistons reciprocably disposed within cylinder means; inlet means by which ingress fluid is delivered to the mechanism; outlet means by which egress fluid passes from the mechanism; fluid flow control and distribution means comprising means receiving the ingress fluid from the inlet means and first internal passageway means selectively delivering ingress fluid sequentially to the pistons of the power means, the angularly disposed power transmitting means and the main shaft means rotating in sequence with displacement of the pistons, the first internal passageway means being sized, shaped and located so as to pass ingress fluid selectively to the pistons substantially without reduction in pressure and without restriction in flow; the fluid flow control and distribution means further comprising second internal passageway means selectively successively accommodating communication of egress fluid from the pistons and means delivering the egress fluid to the outlet means, the second internal passageway means being sized, shaped and located so as to pass the egress fluid selectively to the outlet means substantially without reduction in pressure and without restriction in flow.

Claim 14

A mechanism according to claim 10 further comprising an abutment plate rotatably associated with the rotating wobble plate means and interposed between the rotating wobble plate means and the pistons.

Claim 15

A mechanism according to claim 10 wherein the counterbalance means comprise an integral eccentric extension of the rotating wobble plate means.

Claim 16

A mechanism according to claim 10 wherein the counterbalance means comprise means separate from the rotating wobble plate means and connected thereto by pivotable link means.

Claim 17

A mechanism according to claim 10 further comprising means for varying the angle of inclination of the power transmitting means.

Claim 18

A mechanism according to claim 14 wherein the varying means comprise reciprocable means axially reciprocable by selectively applying pressurized fluid, the reciprocable means being eccentrically pivotally connected by linkage to the rotatable wobble plate means and to the counterbalance means such that fluid displacement of the reciprocable means in either direction will correspondingly change (a) the angle of inclination of the rotatable wobble plate means and (b) the eccentricity of the counterbalance means.

Claim 19

A mechanism according to claim 15 wherein the angle of inclination of the rotatable wobble plate means varies about the center of pin means non-rotatably joining the rotatable wobble plate means to the main shaft means.

Claim 20

A fluid mechanism comprising: a plurality of associated non-rotating power means selectively in communication with ingress and egress fluid; rotating distribution means defining continually moving opposed distribution ingress and distribution egress fluid passageway means sequentially accommodating displacement of ingress and egress fluid to and from the non-rotating power means on a timed basis without substantial change in fluid pressure and without substantial restriction of fluid flow; stationary means comprising separate ingress and egress passageway means respectively at all times communicating fluid to and from the distribution ingress and egress fluid passageway means without substantial change in pressure and without substantial restriction in flow.

Claim 21

A fluid mechanism comprising: a plurality of associated non-rotating power means selectively in communication with ingress and egress fluid; rotating distribution means defining continually moving opposed distribution ingress and distribution egress fluid passageway means sequentially accommodating displacement of ingress and egress fluid to and from the non-rotating power means on a timed basis without substantial change in fluid pressure and without substantial restriction of fluid flow; stationary means comprising separate ingress and egress passageway means respectively at all times communicating fluid to and from the distribution ingress and egress fluid passageway means without substantial change in pressure and without substantial restriction in flow.

Claim 22

A fluid mechanism comprising: a plurality of associated power means selectively in communication with ingress and egress fluid; rotating distribution means defining continually moving opposed distribution ingress and distribution egress fluid passageway means sequentially accommodating displacement of ingress and egress fluid to and from the power means on a timed basis without substantial change in fluid pressure and without substantial restriction of fluid flow; stationary means comprising separate ingress and egress passageway means respectively at all times communicating fluid to and from the distribution ingress and egress fluid passageway means without substantial change in pressure and without substantial restriction in flow; anti-binding means to aid in smooth displacement of the rotating distribution means comprising means causing fluid to be diverted from the ingress-egress flow path thereof into fluid pressure bearing sites on opposite sides of the distribution means.

Claim 23

A fluid mechanism comprising: a plurality of associated power means selectively in communication with ingress and egress fluid; rotating distribution means defining continually moving opposed distribution ingress and distribution egress fluid passageway means sequentially accommodating displacement of ingress and egress fluid to and from the power means on a timed basis without substantial change in fluid pressure and without substantial restriction of fluid flow; stationary means comprising separate ingress and egress passageway means respectively at all times communicating fluid to and from the distribution ingress and egress fluid passageway means without substantial change in pressure and without substantial restriction in flow; anti-binding means to aid in smooth displacement of the rotating distribution means comprising means causing fluid to be diverted from the ingress-egress flow path thereof into fluid pressure bearing sites on opposite sides of the distribution means.

Claim 24

A mechanism according to claim 18 wherein each site comprises an arcuate groove formed in part in the distribution means and in part in the stationary structure adjacent the distribution means.

Claim 25

A fluid drive mechanism comprising: shaft means; means journaling the shaft means for rotation; power transmitting means; means non-rotatably joining the shaft means and the power transmitting means; the power transmitting means comprising transversely projecting wobble plate means, counterweight means, means for selectively varying the angle of inclination of the wobble plate means and means correspondingly adjusting the eccentricity of the counterbalance means.

Claim 26

A fluid drive mechanism comprising: shaft means; means journaling the shaft means for rotation; power transmitting means; means non-rotatably joining the shaft means and the power transmitting means; the power transmitting means comprising transversely projecting wobble plate means, counterweight means, means for selectively varying the angle of inclination of the wobble plate means and means correspondingly adjusting the eccentricity of the counterbalance means.

Claim 33

A fluid drive mechanism comprising: shaft means; means journaling the shaft means for rotation; power means comprising cylinder block means rotatably carried by the shaft means and a plurality of radially disposed piston means reciprocably carried by the cylinder block means; fluid distribution means at least part of which is non-rotatably joined to the shaft means, the fluid distribution means defining during operation continually moving opposed distribution ingress fluid passageway means and distribution egress fluid passageway means, sequentially accommodating displacement of ingress and egress fluid to and from the respective piston means on a timed basis without substantial change in fluid pressure and without substantial restriction of fluid flow, the fluid distribution means further comprising fluid seal means which at any point in time (a) separate the ingress fluid from the egress fluid, (b) accommodate delivery of ingress fluid to only some of the piston means while prohibiting fluid exhaust therefrom and (c) accommodate exhausting of egress fluid from only others of the piston means while prohibiting entry of ingress fluid thereto.

Claim 34

A fluid drive mechanism comprising: shaft means; means journaling the shaft means for rotation; power means comprising cylinder block means rotatably carried by the shaft means and a plurality of radially disposed piston means reciprocably carried by the cylinder block means; fluid distribution means at least part of which is non-rotatably joined to the shaft means, the fluid distribution means defining during operation continually moving opposed distribution ingress fluid passageway means and distribution egress fluid passageway means, sequentially accommodating displacement of ingress and egress fluid to and from the respective piston means on a timed basis without substantial change in fluid pressure and without substantial restriction of fluid flow, the fluid distribution means further comprising fluid seal means which at any point in time (a) separate the ingress fluid from the egress fluid, (b) accommodate delivery of ingress fluid to only some of the piston means while prohibiting fluid exhaust therefrom and (c) accommodate exhausting of egress fluid from only others of the piston means while prohibiting entry of ingress fluid thereto.

Claim 35

A fluid drive mechanism according to claim 24 wherein the fluid distribution means further comprise second fluid seal means preventing escape of ingress fluid from the mechanism and third fluid seal means preventing escape of egress fluid from the mechanism.

Claim 36

A fluid drive mechanism according to claim 25 wherein each of the three fluid seal means comprise a metal ring which rotates as part of the fluid distribution means in close sealing proximity to adjacent stationary structure.

Claim 37

A fluid drive mechanism according to claim 24 wherein the fluid distribution means have a generally disc-shape, the ingress fluid passageway means comprise a series of large adjacent ingress openings substantially located along a common radius over an arcuate distance substantially less than 360 degrees, the large ingress openings being separated by generally radially-directed spokes, and the egress fluid passageway means comprising a series of large adjacent egress openings substantially located along a second different common radius over a second different arcuate distance substantially less than 360 degrees, the large egress openings being separated by generally radially-directed other spokes.

Claim 38

A fluid drive mechanism according to claim 27 further comprising other ingress and egress fluid passageway means disposed substantially along the two mentioned radii at arcuate locations other than the arcuate locations of the large ingress and egress openings so that ingress and egress fluid is always instantaneously available to each piston means as shaft means rotation occurs and to equalize fluid pressure on opposite sides of the disc-shaped fluid distribution means to insure facile rotation.