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Publication Title | Ulllted States Patent [19] Stewartetal. DOUBLE DIAPHRAGM COMPOUND SHAFT

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Text | Ulllted States Patent [19] Stewartetal. DOUBLE DIAPHRAGM COMPOUND SHAFT | 001



Ulllted States Patent [19] Stewartetal.

[54] DOUBLE DIAPHRAGM COMPOUND SHAFT

[75] Inventorsl Matthew J- Stewart, Thousand Oaks; Kenneth G. Roberts, Simi Valley;

Dennis H. Weissert, Sunland; Robert W- B0519)’, Cerritos, an of Calif

[73] Assignee: CapstoneTurbineCorporation, Woodland Hills Calif

US006037687A

[1] PatentNumber: 6,037,687

[45] DateofPatent: *Mar.14,2000

4,265,099 5/1981 Johnsonetal...64/13 4,802,882 2/1989 Heidrich ................................... 464/99 5,697,848 12/1997 Bosley ..464/98

Primary Examiner—Elvin Enad

AssistantExammer—KarlEIZOTamal Attorney, Agent, or Firm—Albert J. Miller

[*] Notice: Thispatentissubjecttoaterminaldis- [57] ABSTRACT claimer.

[21] APPLNO;09/224,208 _

[22] Flled: Dec‘30’1998

Rehted U_S_App?cation Data

[ ] DivisionofapplicationNo.08/934,430,Sep.19,1997.

[5] Int.Cl.7 ..F16D 3/76 [52] US.Cl... .310/75D;310/156;310/51 [5] Field of Search .. 310/156, 75 D,

Acompound shaftcouplinghavinga?exiblediskshaft,With

tWo ?exible disks or diaphragms, and a tie bolt shaft connecting tWo rigid or stiffshafts. One ?exible disk dia phragm of the ?exible disk shaft is coupled With an inter

ference ?t to the ?rst stiff shaft, While the other ?exible disk

diaphragm of the ?exible disk shaft is coupled With an

interference ?t to the tie bolt shaft Which removably mounts

the second stiff shaft- Aquill shaft Connects the tWO ?exible

diskdiaphragmsofthe?exiblediskshaft.The?rststiffshaft

can be a holloW sleeve With a magnet mounted therein and

the second stiff shaft or poWer head shaft may include a

compressor Wheel, a bearing rotor, and a turbine Wheel removably mounted on the tie bolt shaft.

17 Claims, 4 Drawing Sheets

[56]

310/51; 464/98, 99, 180, 182

References Clted U.S. PATENT DOCUMENTS

3/1931 Dickerson .. 464/99

1,795,765

10\

15

Image | Ulllted States Patent [19] Stewartetal. DOUBLE DIAPHRAGM COMPOUND SHAFT



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