Patent US4296681A successfully refreshed from Google Patents.
US4296681A
Expired / Lapsed
US
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Fluid driven servomechanism
Assignee: Individual
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Filing: 1979-11-14
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Granted: 1981-10-27
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Expires: 1999-11-14
Abstract
Abstract A hydraulic servomechanism permitting a wrist like universal motion of an extending member through a generally hemispherical operating range in which a sphere or sphere-like drive member is mounted for movement in a spherical or sphere-like cavity and driven by fluid pressure in intersecting circumferential channels mounted either in the drive member or the support means. The circumferential channels are sealed by curved metal bands with gaskets along the edge. Hydraulic fluid enters the channels through ports in the sealing bands themselves so as to facilitate easier movement of the drive member.
Inventors
- 👤 Mark E. Rosheim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:57
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/08; F15B15/12; B; B25; B25J; B25J17/00; B25J17/02; B25J17/0258; B25J17/0275; B25J9/00; B25J9/10; B25J9/14; B25J9/146; B25J9/148; F04; F04C; F04C3/00; F04C3/06
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
239 words
A fluid driven servomechanism comprising: a support means; a central drive member mounted on said support means in a manner which permits rotational motion about one axis and also about a second axis which is generally perpendicular to said one axis; channel means disposed about said central drive member having a first channel partially circumscribing said one axis and a second channel partially circumscribing said second axis, each channel having walls and a bottom; a first sealing means disposed along a substantial portion of said first channel so as to enclose said substantial portion of said channel, said first sealing means including fluid admission ports therein to permit fluid to enter said substantial portion of said first channel and further including second sealing means disposed along a substantial portion of said second channel so as to enclose said substantial portion of said second channel, said second sealing means including fluid admission ports to allow fluid to enter said substantial portion of said second channel; and a first dividing means on said drive member and in said substantial portion of said first channel so as to divide the enclosed portion of said first channel and move said drive member about said one axis in response to a differential fluid pressure on opposite sides of said first dividing means and further including second dividing means similar to said first dividing means except located in said substantial portion of said second channel.
Claim 2
Dependent Claim
239 words
A fluid driven servomechanism comprising: a support means; a central drive member mounted on said support means in a manner which permits rotational motion about one axis and also about a second axis which is generally perpendicular to said one axis; channel means disposed about said central drive member having a first channel partially circumscribing said one axis and a second channel partially circumscribing said second axis, each channel having walls and a bottom; a first sealing means disposed along a substantial portion of said first channel so as to enclose said substantial portion of said channel, said first sealing means including fluid admission ports therein to permit fluid to enter said substantial portion of said first channel and further including second sealing means disposed along a substantial portion of said second channel so as to enclose said substantial portion of said second channel, said second sealing means including fluid admission ports to allow fluid to enter said substantial portion of said second channel; and a first dividing means on said drive member and in said substantial portion of said first channel so as to divide the enclosed portion of said first channel and move said drive member about said one axis in response to a differential fluid pressure on opposite sides of said first dividing means and further including second dividing means similar to said first dividing means except located in said substantial portion of said second channel.
Claim 3
Dependent Claim
76 words
The apparatus of claim 1 in which each of said sealing means comprises a band extending along its respective channel above the bottom of the channel for a substantial portion of the channel so as to form a chamber therein, said band having sealing gaskets along the edge to engage the channel walls, said band also having larger terminal portions at each end which extend to the bottom of the channel to enclose said chamber therein.
Claim 4
Dependent Claim
18 words
The apparatus of claim 2 in which said fluid admission ports are positioned in said larger terminal portions.
Claim 5
Dependent Claim
42 words
The apparatus of claim 3 in which each of said dividing means comprise at least one riser wall in its respective channel extending up from the bottom of its respective channel to bear against said band so as to divide said chamber.
Claim 6
Dependent Claim
28 words
The apparatus of claim 1 in which the channel means disposed about the central drive member comprise outwardly opening grooves in the surface of the central drive member.
Claim 7
Dependent Claim
76 words
The apparatus of claim 5 in which each of said sealing means comprises a band extending along its respective channel above the bottom of the channel for a substantial portion of the channel so as to form a chamber therein, said band having sealing gaskets along the edge to engage the channel walls, said band also having larger terminal portions at each end which extend to the bottom of the channel to enclose said chamber therein.
Claim 8
Dependent Claim
18 words
The apparatus of claim 6 in which said fluid admission ports are positioned in said larger terminal portions.
Claim 9
Dependent Claim
42 words
The apparatus of claim 7 in which each of said dividing means comprise at least one riser wall in each of said channels extending up from the bottom of the channel to bear against said band so as to divide said chamber.
Claim 10
Dependent Claim
27 words
The apparatus of claim 1 in which said channel means disposed about said central drive member comprise at least one inwardly opening groove in said support means.
Claim 11
Dependent Claim
37 words
The apparatus of claim 9 in which each of said dividing means comprises at least one riser wall extending into said channel means from the drive member so as to divide the enclosed portion of said channel.
Claim 12
Dependent Claim
246 words
A fluid driven servomechanism comprising: a support means; a central drive member mounted on said support means in a manner which permits rotational motion about at least one axis; channel means disposed about said central drive member having a first channel partially circumscribing said one axis; a first sealing means disposed along a substantial portion of said first channel so as to enclose said substantial portion of said channel, said first sealing means comprising a band extending along said first channel above the bottom of the channel for a substantial portion of the channel so as to form a chamber therein, said band having sealing gaskets along the edge to engage the channel walls, said band also having larger terminal portions at each end which extend to the bottom of the channel to enclose said chamber, said sealing means including fluid admission ports therein positioned in said larger terminal portions to permit fluid to enter said substantial portion of said channel; and a dividing means on said drive member and in said substantial portion of said channel so as to divide the enclosed portion of said channel and move said drive member about said one axis in response to a differential fluid pressure on opposite sides of the dividing means, said dividing means comprising at least one riser wall in said channel extending up from the bottom of the channel to bear against the sealing means so as to divide the enclosed portion of the channel.
Claim 13
Dependent Claim
246 words
A fluid driven servomechanism comprising: a support means; a central drive member mounted on said support means in a manner which permits rotational motion about at least one axis; channel means disposed about said central drive member having a first channel partially circumscribing said one axis; a first sealing means disposed along a substantial portion of said first channel so as to enclose said substantial portion of said channel, said first sealing means comprising a band extending along said first channel above the bottom of the channel for a substantial portion of the channel so as to form a chamber therein, said band having sealing gaskets along the edge to engage the channel walls, said band also having larger terminal portions at each end which extend to the bottom of the channel to enclose said chamber, said sealing means including fluid admission ports therein positioned in said larger terminal portions to permit fluid to enter said substantial portion of said channel; and a dividing means on said drive member and in said substantial portion of said channel so as to divide the enclosed portion of said channel and move said drive member about said one axis in response to a differential fluid pressure on opposite sides of the dividing means, said dividing means comprising at least one riser wall in said channel extending up from the bottom of the channel to bear against the sealing means so as to divide the enclosed portion of the channel.
Claim 14
Dependent Claim
156 words
A fluid driven servomechanism comprising: a support means; a central drive member mounted on said support means in a manner which permits rotational motion about at least one axis; channel means disposed about said central drive member having a first channel partially circumscribing said one axis which channel means comprises an outwardly opening groove in the surface of the central drive member; a first sealing means disposed along a substantial portion of said first channel so as to enclose said substantial portion of said channel, said sealing means including fluid admission ports therein to permit fluid to enter said substantial portion of said channel; and a dividing means on said drive member and in said substantial portion of said channel so as to divide the enclosed portion of said channel and move said drive member about said one axis in response to a differential fluid pressure on opposite sides of said dividing means in said channel.
Claim 15
Dependent Claim
156 words
A fluid driven servomechanism comprising: a support means; a central drive member mounted on said support means in a manner which permits rotational motion about at least one axis; channel means disposed about said central drive member having a first channel partially circumscribing said one axis which channel means comprises an outwardly opening groove in the surface of the central drive member; a first sealing means disposed along a substantial portion of said first channel so as to enclose said substantial portion of said channel, said sealing means including fluid admission ports therein to permit fluid to enter said substantial portion of said channel; and a dividing means on said drive member and in said substantial portion of said channel so as to divide the enclosed portion of said channel and move said drive member about said one axis in response to a differential fluid pressure on opposite sides of said dividing means in said channel.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-10-26 | 1985-04-27 | 1985-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-26 | 1989-04-27 | 1989-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-26 | 1993-04-27 | 1993-10-27 | $7700.00 | Window Closed / Lapsed |