US4194360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power take-off arrangements
Assignee: GRUBER JACQUELINE ANITA NELLY
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Filing: 1978-03-15
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Granted: 1980-03-25
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Expires: 1998-03-15
Abstract
Abstract The invention relates to a power take-off arrangement, particularly a power take-off arrangement from an engine, comprising a pump including a fixed casing defining an annular liquid chamber, a rotor with a vaned annulus rotatable in said annular liquid chamber and intended to be rotated over a relatively wide speed range, a liquid inlet to said annular chamber, a liquid outlet from said annular chamber, a gate between said inlet and said outlet intended to allow passage of the rotor thereby while obstructing the flow of liquid along said annular chamber externally of the vanes of the rotor, and means for maintaining the liquid outlet from said pump at a substantially constant pressure at speeds above a predetermined speed within said speed range.
Inventors
- 👤 Helmut J. Stieger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:47
CPC Classifications
F; F02; F02B; F02B63/00; F02B63/06; F04; F04D; F04D15/00; F04D15/0027; F04D15/005; F04D5/00; F04D5/002; F04D5/007; F05; F05B; F05B2250/00; F05B2250/50; F05B2250/503
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
121 words
A power take-off arrangement comprising a high pressure liquid pump intended to be rotated over a relatively wide speed range by a power source and means for maintaining a liquid outlet from said pump at a substantially constant pressure at speeds above a predetermined speed within said speed range, wherein the pump comprises a fixed casing defining an annular liquid chamber, a rotor with a vaned annulus rotatable in said annular liquid chamber, a liquid inlet to said annular chamber, a liquid outlet from said annular chamber, and a gate between said inlet and said outlet intended to allow passage of the rotor thereby whilst obstructing the flow of liquid along said annular chamber externally of the vanes of the rotor.
Claim 2
Dependent Claim
121 words
A power take-off arrangement comprising a high pressure liquid pump intended to be rotated over a relatively wide speed range by a power source and means for maintaining a liquid outlet from said pump at a substantially constant pressure at speeds above a predetermined speed within said speed range, wherein the pump comprises a fixed casing defining an annular liquid chamber, a rotor with a vaned annulus rotatable in said annular liquid chamber, a liquid inlet to said annular chamber, a liquid outlet from said annular chamber, and a gate between said inlet and said outlet intended to allow passage of the rotor thereby whilst obstructing the flow of liquid along said annular chamber externally of the vanes of the rotor.
Claim 3
Dependent Claim
28 words
A power take-off arrangement according to claim 1 in which the gate extends radially adjacent one side of that part of the rotor within the annular race chamber.
Claim 4
Dependent Claim
28 words
A power take-off arrangement according to claim 1 in which the gate extends radially adjacent both sides of that part of the rotor within the annular liquid chamber.
Claim 5
Dependent Claim
135 words
A power take-off arrangement comprising a high pressure liquid pump incluing a fixed casing defining an annular liquid chamber, a rotor with a vaned annulus rotatable in said annular liquid chamber and intended to be rotated over a relatively wide speed range by a power source, a liquid inlet to said annular chamber, a liquid outlet from said annular chamber, and a gate between said inlet and said outlet intended to allow passage of the rotor thereby whilst obstructing the flow of liquid along said annular chamber externally of the vanes of the rotor, said gate being displaceable relative to the casing in response to a predetermined pressure difference across said gate to maintain the liquid outlet from said pump at a substantially constant pressure at speeds above a predetermined speed within said speed range.
Claim 6
Dependent Claim
135 words
A power take-off arrangement comprising a high pressure liquid pump incluing a fixed casing defining an annular liquid chamber, a rotor with a vaned annulus rotatable in said annular liquid chamber and intended to be rotated over a relatively wide speed range by a power source, a liquid inlet to said annular chamber, a liquid outlet from said annular chamber, and a gate between said inlet and said outlet intended to allow passage of the rotor thereby whilst obstructing the flow of liquid along said annular chamber externally of the vanes of the rotor, said gate being displaceable relative to the casing in response to a predetermined pressure difference across said gate to maintain the liquid outlet from said pump at a substantially constant pressure at speeds above a predetermined speed within said speed range.
Claim 7
Dependent Claim
28 words
A power take-off arrangement according to claim 4 in which the gate extends radially adjacent one side of that part of the rotor within the annular race chamber.
Claim 8
Dependent Claim
28 words
The power take-off arrangement according to claim 4 in which the gate extends radially adjacent both sides of that part of the rotor within the annular liquid chamber.
Claim 9
Dependent Claim
57 words
A power take-off arrangement according to claim 4 in which the gate is displaceable relative to the casing between a first position and a second position, said gate in said first position closing the annular liquid chamber to prevent circumferential flow of liquid past the gate and in said second position permitting flow of liquid circumferentially thereby.
Claim 10
Dependent Claim
26 words
A power take-off arrangement as claimed in claim 4 in which said gate is resiliently loaded towards its position affording maximum obstruction to liquid flow thereby.
Claim 11
Dependent Claim
25 words
A power take-off arrangement according to claim 4 in which the gate is pivotable about an axis parallel to the rotational axis of the rotor.
Claim 12
Dependent Claim
27 words
A power take-off arrangement according to claim 4 in which the gate is pivotable about an axis substantially at right angles to the axis of the rotor.
Claim 13
Dependent Claim
60 words
A power take-off arrangement according to claim 4 in which the gate is mounted for angular displacement about the axis of the rotor and said annular liquid chamber includes an enlarged volume adjacent the second position for said gate so arranged that, when the gate is in said second position, liquid can flow through said enlarged volume past said gate.
Claim 14
Dependent Claim
119 words
A power take-off arrangement comprising a high pressure liquid pump including a fixed casing defining an annular liquid chamber, a rotor with a vaned annulus rotatable in said annular liquid chamber and, intended to be rotated over a relatively wide speed range by a power source, a liquid inlet to said annular chamber, a liquid outlet from said annular chamber, a gate between said inlet and said outlet intended to allow passage of the rotor thereby whilst obstructing the flow of liquid along said annular chamber externally of the vanes of the rotor and valve means for maintaining a liquid outlet from said pump at a substantially constant pressure at speeds above a predetermined speed within said speed range.
Claim 15
Dependent Claim
119 words
A power take-off arrangement comprising a high pressure liquid pump including a fixed casing defining an annular liquid chamber, a rotor with a vaned annulus rotatable in said annular liquid chamber and, intended to be rotated over a relatively wide speed range by a power source, a liquid inlet to said annular chamber, a liquid outlet from said annular chamber, a gate between said inlet and said outlet intended to allow passage of the rotor thereby whilst obstructing the flow of liquid along said annular chamber externally of the vanes of the rotor and valve means for maintaining a liquid outlet from said pump at a substantially constant pressure at speeds above a predetermined speed within said speed range.
Claim 16
Dependent Claim
50 words
A power take-off arrangement according to claim 12 in which said valve means comprise a valve, arranged to open when the pressure of the liquid outlet from the pump exceeds a predetermined value to allow pressure liqid flow from said high pressure outlet to a liquid inlet to the pump.
Claim 17
Dependent Claim
30 words
A power take-off arrangement according to claim 12 in which said valve, when actuated, allows pressure liquid to exhaust from the annular liquid chamber upstream from the high pressure outlet.
Claim 18
Dependent Claim
154 words
A power take-off arrangment comprising a high pressure liquid pump including a fixed casing defining an annular liquid chamber, a rotor with a vaned annulus rotatable in said annular liquid chamber and intended to be rotated over a relatively wide speed range by a power source, a liquid inlet to said annular chamber, a liquid outlet from said annular chamber, a gate between said inlet and said outlet intended to allow passage of the rotor thereby whilst obstructing the flow of liquid along said annular chamber externally of the vanes of the rotor means for maintaining a liquid outlet from said pump at a substantially constant pressure at speeds above a predetermined speed within said speed range and including annular sealing means between the rotor and the casing radially inwardly of the annular chamber and defining an annular liquid volume between the rotor and the casing radially inwardly of the said annular sealing means.
Claim 19
Dependent Claim
154 words
A power take-off arrangment comprising a high pressure liquid pump including a fixed casing defining an annular liquid chamber, a rotor with a vaned annulus rotatable in said annular liquid chamber and intended to be rotated over a relatively wide speed range by a power source, a liquid inlet to said annular chamber, a liquid outlet from said annular chamber, a gate between said inlet and said outlet intended to allow passage of the rotor thereby whilst obstructing the flow of liquid along said annular chamber externally of the vanes of the rotor means for maintaining a liquid outlet from said pump at a substantially constant pressure at speeds above a predetermined speed within said speed range and including annular sealing means between the rotor and the casing radially inwardly of the annular chamber and defining an annular liquid volume between the rotor and the casing radially inwardly of the said annular sealing means.
Claim 20
Dependent Claim
43 words
A power take-off arrangement according to claim 15 in which said liquid inlet comprises a duct connecting the low pressure end of the annular chamber with said annular liquid volume, and whereby said annular volume constitutes a reservoir for the annular liquid chamber.
Claim 21
Dependent Claim
70 words
A power take-off arrangement according to claim 15 in which a duct connects the low pressure end of the annular chamber with said annular volume, the liquid inlet connects to the low pressure end of the annular liquid chamber and liquid supplied by said liquid inlet in excess of that required to maintain the annular chamber fully charged with liquid is exhausted to said annular liquid volume via said duct.
Claim 22
Dependent Claim
52 words
A power take-off arrangement according to claim 15 in which a duct connects the low pressure end of the annular chamber with said annular liquid volume and high pressure liquid from said liquid outlet is ducted to increase the liquid flow from the low pressure liquid inlet to said annular liquid volume.
Claim 23
Dependent Claim
23 words
A power take-off arrangement according to claim 15, in which said annular liquid volume is in open communication with a liquid circulation system.
Claim 24
Dependent Claim
22 words
A power take-off arrangement according to claim 4 in combination with a power take-off device linked to the gate for displacement therewith.
Claim 25
Dependent Claim
21 words
A power take-off arrangement according to claim 4 in combination with a high pressure liquid outlet from the annular liquid chamber.
Claim 26
Dependent Claim
32 words
The combination set forth in claim 21 and wherein the power take-off device comprises a piston and cylinder arrangement including resilient means for urging the power take-off device to an inoperative condition.
Claim 27
Dependent Claim
61 words
The combination set forth in claim 22 and wherein a plurality of piston and cylinder arrangements are in communication with the high pressure liquid outlet for actuation when the pressure of the liquid at said outlet attains a predetermined pressure range individual to each piston and cylinder arrangement and whereby the piston and cylinder arrangements can activate in a desired sequence.
Claim 28
Dependent Claim
89 words
A power take-off arrangement according to claim 4 in which the low pressure inlet for the annular liquid chamber communicates with a liquid duct of a liquid circulation system, the high pressure outlet for the annular liquid chamber communicates with said liquid duct at a location spaced from said low pressure inlet and whereby the evacuation of liquid from the duct to the low pressure inlet and exhaust of high pressure liquid into the duct from the high pressure outlet is arranged to enforce liquid flow along said duct.
Claim 29
Dependent Claim
30 words
A power take-off arrangement according to claim 12 in combination with a pressure-liquid actuated power take-off device in communication with the high pressure liquid outlet from the annular liquid chamber.
Claim 30
Dependent Claim
32 words
The combination set forth in claim 25 in which the power take-off device comprises a piston and cylinder arrangement including resilient means for urging the power take-off device to an inoperative condition.
Claim 31
Dependent Claim
61 words
The combination set forth in claim 25 and wherein a plurality of piston and cylinder arrangements are in communication with the high pressure liquid outlet for actuation when the pressure of the liquid of said outlet attains a predetermined pressure range individual to each piston and cylinder arrangement and whereby the piston and cylinder arrangements can activate in a desired sequence.
Claim 32
Dependent Claim
89 words
A power take-off arrangement according to claim 12 in which the low pressure inlet for the annular liquid chamber communicates with a liquid duct of a liquid circulation system, the high pressure outlet for the annular liquid chamber communicates with said liquid duct at a location spaced from said low pressure inlet and whereby the evacuation of liquid from the duct to the low pressure inlet and exhaust of high pressure liquid into the duct from the high pressure outlet is arranged to enforce liquid flow along said duct.
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) | 1983-03-25 | 1983-09-24 | 1984-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-03-25 | 1987-09-24 | 1988-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-03-25 | 1991-09-24 | 1992-03-25 | $7700.00 | Window Closed / Lapsed |