Patent US2814965A successfully refreshed from Google Patents.
Patent US3678810A successfully refreshed from Google Patents.
US3678810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotational coupling
Assignee: Dana Inc
•
Filing: 1970-06-04
•
Granted: 1972-07-25
•
Expires: 1990-06-04
Abstract
Abstract A concentric arrangement of two transfer tubes provides dual fluid flow channels between a supporting housing and a movable actuator. Each of the two transfer tubes is flexibly sealed both in the supporting housing and the movable actuator. The two concentric transfer tubes thus provide a rotational coupling between the fixed support and an actuator having rotational freedom about more than a single axis.
Inventors
- 👤 Lloyd H Holmes
- 👤 William D Sundland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:52
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/02; F15B15/04; F01; F01B; F01B15/00; F01B15/04; F15B15/08; F15B15/14; F15B15/149; F16; F16L; F16L39/00; F16L39/04
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
194 words
In a fluid control system, comprising in combination: a housing including a pivotal support and having first and second channels, a power actuator pivotally mounted with respect to said housing and rotatable with respect thereto, said actuator having a manifold with first and second channels, means for mounting said actuator to the pivotal support of said housing, a first transfer tube in communication with the first channel of said housing and extending therefrom to the first fluid channel of the manifold of said actuator, means for pivotally sealing said first transfer tube in the first channel of said housing and the first channel of the manifold of said actuator, a second transfer tube movable with reference to said first tube and coaxially arranged therewith in communication with the second channel of said housing and extending therefrom to the second fluid channel of the manifold of said actuator, and means for pivotally sealing said second transfer tube in the second channel of said housing and the second channel of the manifold of said actuator to provide two independent fluid passages between the channels of said housing and the channels of the manifold of said actuator.
Claim 2
Dependent Claim
194 words
In a fluid control system, comprising in combination: a housing including a pivotal support and having first and second channels, a power actuator pivotally mounted with respect to said housing and rotatable with respect thereto, said actuator having a manifold with first and second channels, means for mounting said actuator to the pivotal support of said housing, a first transfer tube in communication with the first channel of said housing and extending therefrom to the first fluid channel of the manifold of said actuator, means for pivotally sealing said first transfer tube in the first channel of said housing and the first channel of the manifold of said actuator, a second transfer tube movable with reference to said first tube and coaxially arranged therewith in communication with the second channel of said housing and extending therefrom to the second fluid channel of the manifold of said actuator, and means for pivotally sealing said second transfer tube in the second channel of said housing and the second channel of the manifold of said actuator to provide two independent fluid passages between the channels of said housing and the channels of the manifold of said actuator.
Claim 3
Dependent Claim
57 words
In a fluid control system as set forth in claim 1 wherein said means for pivotally sealing said first and second transfer tubes at the respective channels includes a ring seal at each end of said tubes mating with fittings of the channels at said housing and of the channels at the manifold of said actuator respectively.
Claim 4
Dependent Claim
60 words
In a fluid control system as set forth in claim 1 wherein said means for pivotally sealing said first and second transfer tubes includes an O-ring seal in an annular groove formed at the ends of said tubes, said O-ring seal mating with fittings of the channels of said housing and the channels of the manifold of said actuator, respectively.
Claim 5
Dependent Claim
34 words
A rotational coupler as set forth in claim 3 wherein said means for pivotally sealing the first and second transfer tubes further includes a bulbous collar at each end of the said transfer tubes.
Claim 6
Dependent Claim
217 words
In a fluid control system, comprising in combination: a housing including a pivotal support and having first and second channels, a power actuator pivotally mounted with respect to said housing and rotatable with respect thereto, said actuator having a manifold with first and second channels, a hollow pin for mounting said power actuator to the pivotal support of said housing, said pin having a channel in communication with the second channel of the manifold of said actuator for extending the second chAnnel to an open end of said pin, a first transfer tube in communication with the first channel of said housing and extending therefrom to the first channel of the manifold of said actuator, means for pivotally sealing said first transfer tube in the first channel of said housing and the first channel of the manifold of said actuator, a second transfer tube movable with reference to said first tube and coaxially arranged therewith in communication with the second channel of said housing and extending therefrom to the channel of said hollow pin, and means for pivotally sealing said second transfer tube in the second channel of said housing and the channel of said pin to provide two independent fluid passages between the channels of said housing and the channels of the manifold of said actuator.
Claim 7
Dependent Claim
217 words
In a fluid control system, comprising in combination: a housing including a pivotal support and having first and second channels, a power actuator pivotally mounted with respect to said housing and rotatable with respect thereto, said actuator having a manifold with first and second channels, a hollow pin for mounting said power actuator to the pivotal support of said housing, said pin having a channel in communication with the second channel of the manifold of said actuator for extending the second chAnnel to an open end of said pin, a first transfer tube in communication with the first channel of said housing and extending therefrom to the first channel of the manifold of said actuator, means for pivotally sealing said first transfer tube in the first channel of said housing and the first channel of the manifold of said actuator, a second transfer tube movable with reference to said first tube and coaxially arranged therewith in communication with the second channel of said housing and extending therefrom to the channel of said hollow pin, and means for pivotally sealing said second transfer tube in the second channel of said housing and the channel of said pin to provide two independent fluid passages between the channels of said housing and the channels of the manifold of said actuator.
Claim 8
Dependent Claim
113 words
In a fluid control system as set forth in claim 5 wherein said means for pivotally sealing said first transfer tube at the channel of said housing and the channel of the manifold of said actuator includes a ring seal at each end thereof mating with fittings of the first channel of said housing and the first channel of the manifold of said actuator, and said means for pivotally sealing said second transfer tube at the second channel of said housing and the channel of said hollow pin includes a ring seal at each end thereof mating with fittings of the second channel of said housing and the channel of said hollow pin.
Claim 9
Dependent Claim
53 words
In a fluid control system as set forth in claim 5 wherein said means for pivotally sealing said first and second transfer tubes includes an O-ring seal in an annular groove formed at the ends of said tubes, said O-ring seals mating with fittings in the respective channels with said tubes in communication.
References Cited (Backward Citations)
US1500921A
Cited
US2705650A
Cited
US2700558A
Cited
US2791449A
Cited
DE1034431B
Cited
US3096077A
Cited
US3152522A
Cited
US3202062A
Cited
US3153988A
Cited
US3484853A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-25 | 1976-01-24 | 1976-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-25 | 1980-01-24 | 1980-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-25 | 1984-01-24 | 1984-07-25 | $7700.00 | Window Closed / Lapsed |