Patent US3873886A successfully refreshed from Google Patents.
US3873886A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for preventing accumulation of static electricity on a spindle and bearing assembly thereof
Assignee: Toyota Industries Corp
•
Filing: 1973-11-14
•
Granted: 1975-03-25
•
Expires: 1993-11-14
Abstract
Abstract In a spindle assembly driven by a driving belt wherein a nonconductive resiliently yieldable member is interposed between a bearing assembly rotatably supporting a spindle and a bushing member enveloping the bearing assembly, a conductive resilient member connects the bushing member with the bearing assembly and the bushing member is rigidly mounted on a machine frame which is connected to the earth. The static electricity created by the slip or frictional contact between the spindle and the driving belt is allowed to escape to the earth via the bearing assembly, the bushing member and the machine frame.
Inventors
- 👤 Takashi Kato
- 👤 Yoshihisa Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:00
CPC Classifications
F; F16; F16C; F16C33/00; D; D01; D01H; D01H4/00; D01H4/04; D01H4/08; D01H4/12; F16C27/00; F16C27/06; F16C27/063; F16C35/00; F16C35/04; F16C35/06; F16C35/07; F16C35/077; F16C2340/00; F16C2340/18
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
146 words
In a device for supporting a spindle part of an open-end spinning device comprising a spindle and a spinning rotor rigidly mounted to an end of said spindle and a driving belt contacting another end of said spindle, wherein a bearing assembly rotatably supports the spindle or shaft, a bushing member envelops the bearing assembly, a machine frame rigidly supports the bushing member and is connected to the earth, and a non-conductive resiliently yieldable member is interposed between the bearing assembly and the bushing member, a device for preventing the accumulation of the static electricity created by the slip or frictional contact of said driving belt with said spindle on said bearing assembly and said spindle, comprising a conductive yieldable member connecting said bushing member and said bearing assembly in resilient condition, said bearing assembly and said bushing member being made of a conductive metallic material.
Claim 2
Dependent Claim
146 words
In a device for supporting a spindle part of an open-end spinning device comprising a spindle and a spinning rotor rigidly mounted to an end of said spindle and a driving belt contacting another end of said spindle, wherein a bearing assembly rotatably supports the spindle or shaft, a bushing member envelops the bearing assembly, a machine frame rigidly supports the bushing member and is connected to the earth, and a non-conductive resiliently yieldable member is interposed between the bearing assembly and the bushing member, a device for preventing the accumulation of the static electricity created by the slip or frictional contact of said driving belt with said spindle on said bearing assembly and said spindle, comprising a conductive yieldable member connecting said bushing member and said bearing assembly in resilient condition, said bearing assembly and said bushing member being made of a conductive metallic material.
Claim 3
Dependent Claim
108 words
A device for preventing accumulation of static electricity on a spindle and bearing assembly thereof according to claim 1, wherein said bushing member and said non-conductive resiliently yieldable member are provided with a separate aperture passing therethrough respectively and facing each other so that a common aperture is formed thereby, said separate aperture of said bushing member is closed at an outside end portion thereof by a conductive closing member, said conductive yieldable member is disposed in a space formed in said common aperture restricted by said closing member in resilient condition, and said conductive yieldable member contacts said bushing member or closing member and said bearing assembly.
Claim 4
Dependent Claim
35 words
A device for preventing accumulation of static electricity on a spindle and bearing assembly thereof according to claim 2, wherein said conductive yieldable member is a compressive helical spring made of a conductive metallic material.
Claim 5
Dependent Claim
31 words
A device for preventing accumulation of static electricity on a spindle and bearing assembly thereof according to claim 2, wherein said conductive yieldable member is a flexible resilient metallic plate spring.
Claim 6
Dependent Claim
81 words
A device for preventing accumulation of static electricity on a spindle and bearing assembly thereof according to claim 1, wherein said bushing member and said non-conductive resiliently yieldable member are provided with a separate aperture passing therethrough respectively and facing each other so that a common aperture is formed thereby, said conductive yieldable member is a solidified paint material filled in said common aperture and said paint material contains a quantity of conductive substance sufficient to make said paint matErial conductive.
Claim 7
Dependent Claim
53 words
A device for preventing accumulation of static electricity on a spindle and bearing assembly thereof according to claim 1, wherein said conductive yieldable member is a plate spring secured to an outside end of said bushing member and a free end of said plate spring resiliently contacts a part of said bearing assembly.
Claim 8
Dependent Claim
47 words
A device for preventing accumulation of static electricity on a spindle and bearing assembly thereof according to claim 1, wherein said conductive yieldable member is a flexible spring with the two end portions thereof secured on said bushing member and a part of said bearing assembly, respectively.
Claim 9
Dependent Claim
50 words
A device for preventing accumulation of static electricity on a spindle and bearing assembly thereof according to claim 1, wherein said conductive yieldable member is a yieldable plate material with the two ends thereof secured on a part of said bushing member and a part of said bearing assembly, respectively.
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) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |