US3695367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic power tool
Assignee: Boeing North American Inc
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Filing: 1970-06-08
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Granted: 1972-10-03
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Expires: 1990-06-08
Abstract
Abstract A hydraulically driven radial inflow turbine having power takeoff means attached thereto is actuated and controlled by an axially translatable nozzle ring. A manually actuatable trigger mechanism admits a small amount of control fluid which is tapped from a primary source of liquid under pressure into a chamber defined by the nozzle ring and the turbine housing to move the nozzle ring in registering alignment with the primary liquid inlet apertures to the turbine impeller blades. The trigger assembly proportionately supplies hydraulic pressure to the turbine to control the flow of fluid to the turbine thereby controlling the power output.
Inventors
- 👤 Fritz C Catterfeld
- 👤 Sebastian B Macaluso
- 👤 Lawrence D Weber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:51
CPC Classifications
F; F03; F03B; F03B15/00; F03B15/02; B; B23; B23B; B23B45/00; B23B45/04; F03B13/00; F03B13/04; Y; Y02; Y02E; Y02E10/00; Y02E10/20; Y10; Y10S; Y10S173/00; Y10S173/01; Y10S415/00; Y10S415/904
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
198 words
A hydraulic turbine tool-driving apparatus comprising: a housing, means on said housing forming an inlet aperture and an outlet aperture, a source of hydraulic pressure connected to said inlet aperture, a turbine wheel having a series of outwardly extending turbine blades and including a shaft contained within said housing, a movable nozzle ring extending peripherally around the turbine wheel and interposed between said housing and said turbine wheel to direct said hydraulic pressure inwardly onto said turbine wheel, said nozzle ring comprising an axially aligned cylinder having a first end and a second end, means forming a peripheral aperture in said cylinder between said ends, said cylinder extending peripherally in a slide way around said turbine wheel, spring means for biasing one end of said cylinder so that said peripheral aperture is out of alignment with said inlet aperture, a trigger mechanism to move said ring against said spring means bias so as to align said peripheral aperture with at least a portion said inlet aperture and in turn, to proportionately meter hydraulic flow past said nozzle ring onto said turbine wheel, and a power takeoff means including said shaft to transmit rotational energy from said turbine wheel.
Claim 2
Dependent Claim
198 words
A hydraulic turbine tool-driving apparatus comprising: a housing, means on said housing forming an inlet aperture and an outlet aperture, a source of hydraulic pressure connected to said inlet aperture, a turbine wheel having a series of outwardly extending turbine blades and including a shaft contained within said housing, a movable nozzle ring extending peripherally around the turbine wheel and interposed between said housing and said turbine wheel to direct said hydraulic pressure inwardly onto said turbine wheel, said nozzle ring comprising an axially aligned cylinder having a first end and a second end, means forming a peripheral aperture in said cylinder between said ends, said cylinder extending peripherally in a slide way around said turbine wheel, spring means for biasing one end of said cylinder so that said peripheral aperture is out of alignment with said inlet aperture, a trigger mechanism to move said ring against said spring means bias so as to align said peripheral aperture with at least a portion said inlet aperture and in turn, to proportionately meter hydraulic flow past said nozzle ring onto said turbine wheel, and a power takeoff means including said shaft to transmit rotational energy from said turbine wheel.
Claim 3
Dependent Claim
35 words
The invention as set forth in claim 1 wherein said inlet and outlet apertures are concentric, one within the other, thereby forming coaxially aligned inlet and outlet flow paths for the flow of water pressure.
Claim 4
Dependent Claim
68 words
The invention as set forth in claim 1 wherein said turbine wheel comprises a plurality of radially oriented turbine blades, each blade at its outer end, being oriented substantially 90* to the flow of water pressure and having a curved cerf at its inner end to extract substantially all of the water energy directed onto each of said blades before exhausting said water pressure through said outlet aperture.
Claim 5
Dependent Claim
84 words
The invention as set forth in claim 1 wherein said peripheral aperture is a continuous slot bridged by a series of fixed stator blades forming a plurality of injector throats so as to accelerate hydraulic pressure against said turbine blades when said nozzle ring is in registering alignment with said inlet aperture, each of the throats being positioned adjacent to the inner periphery of the nozzle ring so as to impact hydraulic flow at maximum velocity against the outer end of said turbine blades.
Claim 6
Dependent Claim
86 words
The invention as set forth in claim 1 wherein said trigger means includes a normally closed manually actuatable poppet valve having a closed position and an open position, means forming an annular cavity between said housing and an end of said nozzle ring and conduit means extending between said hydraulic pressure source and said cavity, said poppet valve extending within said conduit means for metering hydraulic fluid from said source to said cavity so as to move said nozzle ring into alignment with said inlet aperture.
Claim 7
Dependent Claim
72 words
The invention as set forth in claim 5 including a second conduit means extending between the cavity and the interior of said poppet valve and a third conduit means communicating between the interior of said valve and said outlet aperture so as to provide a fluid bleed path for hydraulic fluid from within said cavity when said valve is moved to its closed position thereby preventing water hammering in the hydraulic system.
Claim 8
Dependent Claim
71 words
The invention as set forth in claim 1 further comprising an adjustable rod extendable into said housing, said rod being axially aligned with said nozzle ring, one end of said rod being in juxtaposition to an end of said nozzle ring so as to limit the extent of nozzle ring travel when said ring is moved into alignment with said inlet aperture thereby controlling the hydraulic flow to said turbine wheel.
Claim 9
Dependent Claim
195 words
A water turbine tool driving apparatus comprising: a housing, means on said housing forming an inlet aperture and an exhaust outlet aperture, A source of water pressure connected to said inlet aperture, a bladed turbine wheel including a shaft contained within said housing, means extending peripherally around the turbine wheel and interposed between said housing and said turbine wheel to direct said water pressure radially inwardly onto said turbine wheel, means to move said last mentioned means and, in turn, to proportionately meter water flow through said last mentioned means onto said turbine wheel, means to exhaust water through said outlet exhaust aperture after the water has traversed said turbine wheel, a power take-off means including said shaft to transmit rotational energy from said turbine wheel, and means to close off said outlet exhaust aperture in said housing, said water being redirected to a plurality of apertures formed in a rear housing upstream of said outlet exhaust aperture, said plurality of apertures being aligned to exhaust water in a direction opposite to the direction of torque of a tool connected to said power take-off means when said tool is operated against a workpiece under water.
Claim 10
Dependent Claim
195 words
A water turbine tool driving apparatus comprising: a housing, means on said housing forming an inlet aperture and an exhaust outlet aperture, A source of water pressure connected to said inlet aperture, a bladed turbine wheel including a shaft contained within said housing, means extending peripherally around the turbine wheel and interposed between said housing and said turbine wheel to direct said water pressure radially inwardly onto said turbine wheel, means to move said last mentioned means and, in turn, to proportionately meter water flow through said last mentioned means onto said turbine wheel, means to exhaust water through said outlet exhaust aperture after the water has traversed said turbine wheel, a power take-off means including said shaft to transmit rotational energy from said turbine wheel, and means to close off said outlet exhaust aperture in said housing, said water being redirected to a plurality of apertures formed in a rear housing upstream of said outlet exhaust aperture, said plurality of apertures being aligned to exhaust water in a direction opposite to the direction of torque of a tool connected to said power take-off means when said tool is operated against a workpiece under water.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |