US4172678A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fastening a rotor on a shaft
Assignee: Siemens AG
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Filing: 1978-03-02
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Granted: 1979-10-30
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Expires: 1998-03-02
Abstract
Abstract An arrangement for fastening the rotor of a side channel compressor on a shaft wherein the rotor includes a hub through which the shaft passes and the arrangement comprises: a first seating area between the rotor hub and the shaft which is sufficiently tight to provide centering of the rotor on the shaft; a second seating area between the hub and shaft which defines a clearance area therebetween sufficiently wide to receive a hardening plastic; and a hardening plastic disposed within the second seating area.
Inventors
- 👤 Siegfried Schonwald
- 👤 Roland Werling
- 👤 Rudolf Schoning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:22
CPC Classifications
F; F16; F16D; F16D1/00; F16D1/06; F16D1/064; F16D1/068; F04; F04D; F04D29/00; F04D29/26; F04D29/263; Y; Y10; Y10T; Y10T403/00; Y10T403/47; Y10T403/472; Y10T403/473; Y10T403/70; Y10T403/7018; Y10T403/7021; Y10T403/7022; Y10T403/7047
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
102 words
An arrangement for fastening a rotor of a side channel compressor to a shaft, said rotor having a hub through which said shaft passes, the arrangement comprising: at least first and second seating areas between said hub and said shaft, said first seating area being such as to center said rotor on said shaft and said second seating area defining a closed off space between said rotor and said shaft sufficiently wide as to receive a hardening plastic; at least one axially extending slot in said hub for introducing a hardening plastic into said space; and a hardening plastic in said space.
Claim 2
Dependent Claim
102 words
An arrangement for fastening a rotor of a side channel compressor to a shaft, said rotor having a hub through which said shaft passes, the arrangement comprising: at least first and second seating areas between said hub and said shaft, said first seating area being such as to center said rotor on said shaft and said second seating area defining a closed off space between said rotor and said shaft sufficiently wide as to receive a hardening plastic; at least one axially extending slot in said hub for introducing a hardening plastic into said space; and a hardening plastic in said space.
Claim 3
Dependent Claim
29 words
An arrangement in accordance with claim 1 wherein: said shaft in the region of said second seating area has a reduced diameter which results in said closed off space.
Claim 4
Dependent Claim
38 words
An arrangement in accordance with claim 2 wherein: said reduced portion of said shaft is arranged asymmetrically with respect to the length of said hub; and said hub has two longitudinal slots extending from opposite axial sides thereof.
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) | 1982-10-29 | 1983-04-30 | 1983-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-29 | 1987-04-30 | 1987-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-29 | 1991-04-30 | 1991-10-30 | $7700.00 | Window Closed / Lapsed |