US3781623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electro-mechanical lifting device
Assignee: Hanning Elektro Werke GmbH and Co KG
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Filing: 1972-09-19
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Granted: 1973-12-25
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Expires: 1992-09-19
Abstract
Abstract An electro-mechanical lifting device, in particular for bed adjustments, which comprises a driving motor including switching and control means. A pressure source is received in a manual switch. Pneumatic means for operation of the switching and control means are provided by means of the pressure source. A switching device is connected by a hose conduit with the pressure source. The volume of the pressure source is capable of being enlarged and of being reduced. The switching device has a pressure converter responding to pressure below atmospheric pressure and to pressure above atmospheric pressure, with two end positions. The pressure converter is in operative connection selectively with a switch means for left-run and a switch means for right-run of the driving motor.
Inventors
- 👤 G Neumann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:24
CPC Classifications
A; A47; A47C; A47C20/00; A47C20/04; A47C20/048; A47C20/041; A47C31/00; A47C31/008; F; F15; F15B; F15B7/00; F15B7/001; F15B7/003; F15B7/005; F15B7/008; H; H01; H01H; H01H3/00; H01H3/22; H01H3/24
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
168 words
An electro-mechanical lifting device, in particular for bed adjustments, comprising a driving motor including switching and control means, a pressure soure received in a manual switch, pneumatic means for operation of said switching and control means, by means of said pressure source, a switching device connected by a hose conduit with said pressure source, the volume of said pressure source being capable of being enlarged and of being reduced, said switching device having a pressure converter responding to pressure below atmospheric pressure, and to pressure above atmospheric pressure, with two end positions, said pressure converter being in operative connection selectively with a switch means for left-run and a switch means for right-run of said driving motor, two switching lever means for actuating each of said switch means, respectively, said switching device has a transmission lever, said transmission lever is pivoted at one portion to said pressure converter, and has another portion disposed adjacently between and within the range of said two switching lever means for switch means, respectively.
Claim 2
Dependent Claim
168 words
An electro-mechanical lifting device, in particular for bed adjustments, comprising a driving motor including switching and control means, a pressure soure received in a manual switch, pneumatic means for operation of said switching and control means, by means of said pressure source, a switching device connected by a hose conduit with said pressure source, the volume of said pressure source being capable of being enlarged and of being reduced, said switching device having a pressure converter responding to pressure below atmospheric pressure, and to pressure above atmospheric pressure, with two end positions, said pressure converter being in operative connection selectively with a switch means for left-run and a switch means for right-run of said driving motor, two switching lever means for actuating each of said switch means, respectively, said switching device has a transmission lever, said transmission lever is pivoted at one portion to said pressure converter, and has another portion disposed adjacently between and within the range of said two switching lever means for switch means, respectively.
Claim 3
Dependent Claim
190 words
An electro-mechanical lifting device, in particular for bed adjustments, comprising a driving motor including switchIng and control means, a pressure source received in a manual switch, pneumatic means for operation of said switching and control means, by means of said pressure source, a switching device connected by a hose conduit with said pressure source, the volume of said pressure source being capable of being enlarged and of being reduced, said switching device having a pressure converter responding to pressure below atmospheric pressure, and to pressure above atmospheric pressure, with two end positions, said pressure converter being in operative connection selectively with a switch means for left-run and a switch means for right-run of said driving motor, said switching device has a transfer lever, said transfer lever is pivoted to said pressure converter, and disposed within the range of switching levers for said switches, a protective tube of said lifting device, a joining member, lifting limiting rod means, said switching means is secured to said protective tube, said joining member is secured to said lifting limiting means, and said switching levers are disposed within the operating range of said joining member.
Claim 4
Dependent Claim
190 words
An electro-mechanical lifting device, in particular for bed adjustments, comprising a driving motor including switchIng and control means, a pressure source received in a manual switch, pneumatic means for operation of said switching and control means, by means of said pressure source, a switching device connected by a hose conduit with said pressure source, the volume of said pressure source being capable of being enlarged and of being reduced, said switching device having a pressure converter responding to pressure below atmospheric pressure, and to pressure above atmospheric pressure, with two end positions, said pressure converter being in operative connection selectively with a switch means for left-run and a switch means for right-run of said driving motor, said switching device has a transfer lever, said transfer lever is pivoted to said pressure converter, and disposed within the range of switching levers for said switches, a protective tube of said lifting device, a joining member, lifting limiting rod means, said switching means is secured to said protective tube, said joining member is secured to said lifting limiting means, and said switching levers are disposed within the operating range of said joining member.
Claim 5
Dependent Claim
45 words
The lifting device, as set forth in claim 2, which includes two cams disposed on said joining member and having a predetermined distance from each other, said cams defining a U-shaped recess of said joining member, and said switching levers extend into said U-shaped recess.
Claim 6
Dependent Claim
30 words
The lifting device, as set forth in claim 1, wherein said pressure source is equipped with a setting grip, and spring means retaining said setting grip in its center position.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |