US3790119A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Energy storing device, particularly a blockable pneumatic spring
Assignee: Individual
•
Filing: 1971-08-31
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Granted: 1974-02-05
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Expires: 1991-08-31
Abstract
Abstract An energy storing device for installation in a column base for height adjustable furniture provided with a member having a conical aperture attached to the piece of furniture, a cone provided at the upper end of the device for frictional engagement with the aperture, a release pin extending into said member, the cone being formed in one piece on the housing of the device and having a transition zone between the external conical part and the housing.
Inventors
- 👤 F Bauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:01
CPC Classifications
F; F16; F16F; F16F9/00; F16F9/02; F16F9/0209; F16F9/0245; F16F9/0263; A; A47; A47C; A47C3/00; A47C3/20; A47C3/30
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
161 words
In a lifting device for height-adjustable furniture comprising: an energy storing fluid spring means including a cylinder, a piston for axial movement in said cylinder, and a valve at one end of the cylinder for the flow of fluid into and out of said cylinder according to the movement of said piston, said valve comprising a plug sealing said one end of the cylinder and an axially displaceable release pin, the improvement comprising a cone provided at the upper end of said energy storing fluid spring means for frictional attachment to a female socket at the underside of a furniture element intended to be height adjusted, said cone being integral with said plug, said cone having a decreasing diameter from its bottom upwardly of shape complementary to the shape of the female socket of the furniTure element, and said release pin extending centrally through said cone, and a transition zone extending between the external portions of said cone and said plug.
Claim 2
Dependent Claim
161 words
In a lifting device for height-adjustable furniture comprising: an energy storing fluid spring means including a cylinder, a piston for axial movement in said cylinder, and a valve at one end of the cylinder for the flow of fluid into and out of said cylinder according to the movement of said piston, said valve comprising a plug sealing said one end of the cylinder and an axially displaceable release pin, the improvement comprising a cone provided at the upper end of said energy storing fluid spring means for frictional attachment to a female socket at the underside of a furniture element intended to be height adjusted, said cone being integral with said plug, said cone having a decreasing diameter from its bottom upwardly of shape complementary to the shape of the female socket of the furniTure element, and said release pin extending centrally through said cone, and a transition zone extending between the external portions of said cone and said plug.
Claim 3
Dependent Claim
18 words
A device according to claim 1 wherein said transition zone is in the form of a truncated cone.
Claim 4
Dependent Claim
25 words
A device according to claim 1 wherein said cone has an aperture therein adapted to receive and guide the axial displacement of said release pin.
Claim 5
Dependent Claim
32 words
A device according to claim 3 wherein the surface of the aperture in said cone comprises a plurality of radial ribs thereon adapted to guide the axial displacement of said release pin.
Claim 6
Dependent Claim
16 words
A device according to claim 3 wherein a lever is provided for releasing said release pin.
References Cited (Backward Citations)
US3656593A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |