US3766797A — Power distributing transmission systems

Claim 1

Independent Claim 99 words

In a power transmission system, at least one shaft to which power is to be transmitted, and at least another shaft mounted substantially parallel thereto, and means, including at least two gear wheels on each of said shafts, mounted spaced from each other for transmitting power from said other shaft to said first shaft; the gear wheels on the different shafts meshing with each other, and being provided each with separate bearings on each side of each wheel so as to divide the rotary momentum to be transmitted, substantially equally over each of the pairs of meshing gear wheels.

Claim 2

Dependent Claim 99 words

In a power transmission system, at least one shaft to which power is to be transmitted, and at least another shaft mounted substantially parallel thereto, and means, including at least two gear wheels on each of said shafts, mounted spaced from each other for transmitting power from said other shaft to said first shaft; the gear wheels on the different shafts meshing with each other, and being provided each with separate bearings on each side of each wheel so as to divide the rotary momentum to be transmitted, substantially equally over each of the pairs of meshing gear wheels.

Claim 3

Dependent Claim 31 words

System according to claim 1, wherein the relation of tooth width to pitch circle diameter of at least some of said wheels, is of the order of not more than 1.5.

Claim 4

Dependent Claim 29 words

System according to claim 1, comprising a coupling between the wheels of at least one shaft, and substantially undivided roller bearings on each side of each of said wheels.

Claim 5

Dependent Claim 20 words

System according to claim 1, wherein one of said shafts is axially displaceable, and the other shaft is axially fixed.

Claim 6

Dependent Claim 12 words

System according to claim 1, wherein the driving shaft is axially displaceable.

Claim 7

Dependent Claim 22 words

System according to claim 1, wherein adjacent wheels mounted on at least one shaft, are provided with helical teeth of opposite senses.

Claim 8

Dependent Claim 35 words

System according to claim 1, comprising at least two extruder screws, one coupled to the driven shaft; and a third shaft parallel to the two other shafts and directly connected to said second extruder screw.

Claim 9

Dependent Claim 54 words

System according to claim 1, comprising a power source, and a third shaft parallel to said other two shafts; said power source being connected to said third shaft and the driving shaft so as to permit transmission of power simultaneously from said third shaft directly, and from said driving shaft to said gear wheels.

Claim 10

Dependent Claim 73 words

System according to claim 1, comprising a power source, and a third shaft parallel to said other two shafts; said power source being connected to said third shaft and said driving shaft so as to permit transmission of power simultaneously, from said shaft directly, and from said driving shaft to said gear wheels; the driven shaft and the third shaft being provided with back pressure bearings, while the driving shaft is axially free.

Claim 11

Dependent Claim 106 words

In a power transmission system, at least one shaft onto which power is to be transmitted, and at least another shaft mounted substantially parallel thereto, substantially without any power being transmitted therethrough except to the first shaft; at least two gear wheels on each of said shafts spaced from each other; the gear wheels on the different shafts meshing with each other; and being provided each with substantially undivided roller bearings on each side of the wheel; said first shaft being also provided with a back pressure bearing; and coupling means between two wheels arranged on each shaft to permit the mounting of said roller bearings.

Claim 12

Dependent Claim 106 words

In a power transmission system, at least one shaft onto which power is to be transmitted, and at least another shaft mounted substantially parallel thereto, substantially without any power being transmitted therethrough except to the first shaft; at least two gear wheels on each of said shafts spaced from each other; the gear wheels on the different shafts meshing with each other; and being provided each with substantially undivided roller bearings on each side of the wheel; said first shaft being also provided with a back pressure bearing; and coupling means between two wheels arranged on each shaft to permit the mounting of said roller bearings.

Claim 13

Dependent Claim 113 words

In a power transmission system, at least one shaft onto which power is to be transmitted, at least another shaft mounted parallel thereto, substantially without any power being transmitted therethrough except to the first shaft, gear means on each of said shafts meshing with each other, including at least two gear means on at least one of said shafts to permit the rotary momentum to be transmitted, to be divided; said two gear means being mounted spaced from each other and provided with separate bearings on each side thereof; and means between said gear means for decoupling said one shaft so as to mount said gear means and their associated bearings substantially separately.

Claim 14

Dependent Claim 113 words

In a power transmission system, at least one shaft onto which power is to be transmitted, at least another shaft mounted parallel thereto, substantially without any power being transmitted therethrough except to the first shaft, gear means on each of said shafts meshing with each other, including at least two gear means on at least one of said shafts to permit the rotary momentum to be transmitted, to be divided; said two gear means being mounted spaced from each other and provided with separate bearings on each side thereof; and means between said gear means for decoupling said one shaft so as to mount said gear means and their associated bearings substantially separately.

Claim 15

Dependent Claim 66 words

In a power distributing transmission system for multiple screw extruders, means for mounting the screws to rotate against each other at minimum distance, means for driving at least one screw directly, and means for driving another screw including several gears coupled to each other and meshing with corresponding gears driving said other screw ; said gears being coupled through axially movable but radially rigid coupling means.

Claim 16

Dependent Claim 66 words

In a power distributing transmission system for multiple screw extruders, means for mounting the screws to rotate against each other at minimum distance, means for driving at least one screw directly, and means for driving another screw including several gears coupled to each other and meshing with corresponding gears driving said other screw ; said gears being coupled through axially movable but radially rigid coupling means.

Claim 17

Dependent Claim 14 words

System according to claim 12 in which adjacent gears have oppositely directed helical teeth.

Claim 18

Dependent Claim 26 words

System according to claim 12, comprising shafts supporting said several and said corresponding gears, and wherein at least one of said shafts is mounted axially displaceable.

Claim 19

Dependent Claim 33 words

System according to claim 12 comprising parallel shafts supporting said several and said corresponding gears, at least the shaft supporting said several gears being axially displaceable while the other shaft is axially fixed.

Claim 20

Dependent Claim 75 words

System according to claim 12 comprising shafts supporting said several and said corresponding gears; at least one of said shafts being mounted axially displaceable, the other shaft being axially fixed so that under control of the rotary momentum applied to the first shaft, one of the gears supported on said first shaft, is axially displaced until another one of said gears bears against the counter flank of the corresponding gear meshing with said other gear.

Claim 21

Dependent Claim 68 words

System according to claim 12 comprising means supporting said several gears and said corresponding gears separately, at least said several gears being supported axially movable so that under control of the rotary momentum applied to said several gears, at least one of said several gears is axially displaced until another one of several gears bears against the counter flank of the corresponding gear meshing with said other gear.

Claim 22

Dependent Claim 114 words

In a power dividing transmission system for multi-screw extruders, means for driving at least one of the screws directly, means for driving at least another screw, cooperating with said first screw, including several coaxial gears meshing with corresponding gears coaxial with said other screw, the several gears being arranged axially movable; and the corresponding gears being arranged axially fixed; thereby dividing the rotary momentum transferred to the other screw equally over the several gEars and the corresponding gears, so that under control of said momentum one of said several gears is axially displaced until another one of said several gears bears against the counter flank of the corresponding gear meshing with said other gear.

Claim 23

Dependent Claim 114 words

In a power dividing transmission system for multi-screw extruders, means for driving at least one of the screws directly, means for driving at least another screw, cooperating with said first screw, including several coaxial gears meshing with corresponding gears coaxial with said other screw, the several gears being arranged axially movable; and the corresponding gears being arranged axially fixed; thereby dividing the rotary momentum transferred to the other screw equally over the several gEars and the corresponding gears, so that under control of said momentum one of said several gears is axially displaced until another one of said several gears bears against the counter flank of the corresponding gear meshing with said other gear.

Claim 24

Dependent Claim 101 words

In a power transmission system, at least one working axis onto which power is to be transmitted, and at least another substantially parallel axis which does not transmit power except to said one axis; both said axes having arranged thereon gear means meshing with each other so as to impart to said axes substantially equal but opposite speeds; the gear means on at least one of said axes including at least two tooth wheels spaced from each other and independently mounted so as to divide the power transmitted from one axis to the other equally over each of said tooth wheels.

Claim 25

Dependent Claim 101 words

In a power transmission system, at least one working axis onto which power is to be transmitted, and at least another substantially parallel axis which does not transmit power except to said one axis; both said axes having arranged thereon gear means meshing with each other so as to impart to said axes substantially equal but opposite speeds; the gear means on at least one of said axes including at least two tooth wheels spaced from each other and independently mounted so as to divide the power transmitted from one axis to the other equally over each of said tooth wheels.

Claim 26

Dependent Claim 62 words

System according to claim 19, comprising shafts for said tooth wheels and means for coupling said shafts, including a sleeve having inner profiles meshing with outer profiles on said shafts; said meshing profiles including surfaces of convex configuration extending substantially in the direction of the shaft axis, thereby permitting, when in operation, while being secured against rotation, hinge-like displacements in axial direction.

Claim 27

Dependent Claim 59 words

System according to claim 19, comprising shafts for said tooth wheels and means for coupling said shafts, including tooth-shaped profiles interlocking with each other and having radial as well as peripheral surfaces of convex configuration extending substantially in the direction of the shaft axis, thereby permitting, when in operation, while being secured against rotation, hinge-like displacements in axial direction.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1976-10-22	1977-04-23	1977-10-23	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1980-10-22	1981-04-23	1981-10-23	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1984-10-22	1985-04-23	1985-10-23	$7700.00	Window Closed / Lapsed

Power distributing transmission systems

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