US3774675A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary heat-accumulative regenerator for gas turbine engines
Assignee: Nissan Motor Co Ltd
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Filing: 1971-08-05
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Granted: 1973-11-27
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Expires: 1991-08-05
Abstract
Abstract A rotary heat-accumulative regenerator for gas turbine engines, including a rotatable heat-accumulator which is resiliently supported on a rotary shaft by means of compression springs mounted in longitudinal grooves in the shaft whereby shocks and impact invited by a driving force transferred to the heataccumulator is absorbed by the springs. The rotary shaft may preferably be positioned in a path of cool air so that bearing associated with the shaft as well as the springs are isolated from heat in hot turbine exhaust. To this end the shaft may be hollowed to provide an internal passage through which air is passed to internally cool the shaft.
Inventors
- 👤 S Yoshiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:14
CPC Classifications
F; F28; F28D; F28D19/00; F28D19/04; F28D19/048; F16; F16D; F16D2300/00; F16D2300/02; F16D2300/021; F16D2300/0212; Y; Y10; Y10S; Y10S165/00; Y10S165/009; Y10S165/013; Y10S165/016
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
155 words
A rotary heat-accumulator regenerator for use with a gas turbine engine and the like comprising: a heat-accumulator disc having means defining a central opening therethrough bounded by an inner peripheral wall of said heat-accumulator disc; a rotationally driven rotatable shaft extending through said central opening and dimensioned relative thereto to define an annular space between the shaft periphery and said inner peripheral wall; means defining a plurality of longitudinally extending and circumferentially spaced-apart grooves in said shaft each facing said inner peripheral wall; a plurality of friction pads each slidably disposed in one of said grooves and slidable into said annular space to make frictional engagement with said inner peripheral wall; and a plurality of biasing means disposed in respective ones of said grooves for resiliently biasing said friction pads into frictional engagement with said inner peripheral wall with sufficient force to effect rotation of said heat-accumulator disc in response to rotation of said shaft.
Claim 2
Dependent Claim
155 words
A rotary heat-accumulator regenerator for use with a gas turbine engine and the like comprising: a heat-accumulator disc having means defining a central opening therethrough bounded by an inner peripheral wall of said heat-accumulator disc; a rotationally driven rotatable shaft extending through said central opening and dimensioned relative thereto to define an annular space between the shaft periphery and said inner peripheral wall; means defining a plurality of longitudinally extending and circumferentially spaced-apart grooves in said shaft each facing said inner peripheral wall; a plurality of friction pads each slidably disposed in one of said grooves and slidable into said annular space to make frictional engagement with said inner peripheral wall; and a plurality of biasing means disposed in respective ones of said grooves for resiliently biasing said friction pads into frictional engagement with said inner peripheral wall with sufficient force to effect rotation of said heat-accumulator disc in response to rotation of said shaft.
Claim 3
Dependent Claim
35 words
A rotary heat-accumulator regenerator according to claim 1; wherein each biasing means comprises at least one compression spring disposed in one of said grooves and resiliently compressed between its associated friction pad and said shaft.
Claim 4
Dependent Claim
23 words
A rotary heat-accumulator regenerator according to claim 1; wherein each friction pad has an elongated configuration complementing the configuration of its associated groove.
Claim 5
Dependent Claim
17 words
A rotary heat-accumulator regenerator according to claim 3; wherein each friction pad is composed of carbon material.
Claim 6
Dependent Claim
28 words
A rotary heat-accumulator regenerator according to claim 1; wherein said shaft has means therein defining a throughbore for flowing therethrough a cooling medium during use of the regenerator.
Claim 7
Dependent Claim
127 words
A rotary heat-accumulative regenerator for gas turbine engines, including a rotatable heat-accumulator in an annular form and having therein a central opening defined by an inner peripheral wall of said heat-accumulator, a rotatable hollow shaft extending through said opening, said opening having a diameter slightly larger than that of said rotary shaft defining a ring-like space between the shaft and the inner peripheral wall, means defining a plurality of longitudinally extending and circumferentially equidistantly spaced grooves in said shaft each facing said inner peripheral wall, a plurality of pads respectively slidably received in said grooves, and a plurality of compression springs respectively placed between bottoms of said grooves and said pads for resiliently holding said pads in pressing engagement with said inner peripheral wall of said heat-accumulator.
Claim 8
Dependent Claim
127 words
A rotary heat-accumulative regenerator for gas turbine engines, including a rotatable heat-accumulator in an annular form and having therein a central opening defined by an inner peripheral wall of said heat-accumulator, a rotatable hollow shaft extending through said opening, said opening having a diameter slightly larger than that of said rotary shaft defining a ring-like space between the shaft and the inner peripheral wall, means defining a plurality of longitudinally extending and circumferentially equidistantly spaced grooves in said shaft each facing said inner peripheral wall, a plurality of pads respectively slidably received in said grooves, and a plurality of compression springs respectively placed between bottoms of said grooves and said pads for resiliently holding said pads in pressing engagement with said inner peripheral wall of said heat-accumulator.
Claim 9
Dependent Claim
52 words
A rotary heat-accumulative regenerator according to claim 6, further including a pair of seals held in sliding engagement with both sides of said heat-accumulator for locating said rotary shaft in a path of cool air to be passed through said heat-accumulator in order to isolate said shaft from the hot turbine exhaust.
Claim 10
Dependent Claim
16 words
A rotary heat-accumulative regenerator according to claim 6, in which said pads are made of carbon.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |