Patent US2903674A successfully refreshed from Google Patents.
Patent US5040758A successfully refreshed from Google Patents.
US5040758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Level adjustment device, particularly for furniture
Assignee: Individual
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Filing: 1990-04-20
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Granted: 1991-08-20
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Expires: 2010-04-20
Abstract
Abstract A level adjustment device (10) comprises: a foot or base element (12) with a shaped part (20) and a threaded shank (24); a hollow, cylindrical operation or driving element, provided with female threaded parts and with a crown gear axially at one end; a support element (16) engaging in a stable manner the cylindrical operation element for axial movement and having an operation window (40). By introducing the tip of a cross-pointed screwdriver of an usual type through the operation window, the cylindrical hollow element is rotated, thus moving it and the support axially along the foot element.
Inventors
- 👤 Fiorello Giovannetti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:44
CPC Classifications
A; A47; A47B; A47B91/00; A47B91/02; A47B91/022; A47B91/028; B; B66; B66F; B66F3/00; B66F3/08; B66F3/10; F; F16; F16M; F16M7/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
137 words
A level adjustment device comprising a base element having a threaded shank, a tubular shaped driving element threaded on the shank, a tubular shaped support element coaxial with said base element and driving element, the support element enclosing the driving element, the support element being coupled to the driving element for rotation relative to the driving element and axial movement integrally with the driving element, the support element being non-rotatably coupled to the base element and being axially movable thereon, the driving element having a castellated upper edge with axially upwardly extending teeth, and the support element having a lateral opening in alignment with said castellated upper edge for inserting an operating means to mesh with said teeth and rotate the driving element thereby axially moving the driving element and support element relative to the base element.
Claim 2
Dependent Claim
137 words
A level adjustment device comprising a base element having a threaded shank, a tubular shaped driving element threaded on the shank, a tubular shaped support element coaxial with said base element and driving element, the support element enclosing the driving element, the support element being coupled to the driving element for rotation relative to the driving element and axial movement integrally with the driving element, the support element being non-rotatably coupled to the base element and being axially movable thereon, the driving element having a castellated upper edge with axially upwardly extending teeth, and the support element having a lateral opening in alignment with said castellated upper edge for inserting an operating means to mesh with said teeth and rotate the driving element thereby axially moving the driving element and support element relative to the base element.
Claim 3
Dependent Claim
26 words
A device according to claim 1 in combination with an operating means comprising a cross-head screw driver inserted in said opening and meshing with said teeth.
Claim 4
Dependent Claim
21 words
A device according to claim 1, characterized in that said support element has a position locator eyelet for said operating means.
Claim 5
Dependent Claim
44 words
A device according to claim 1 including a coupling between the driving element and the base element comprising a worm-worm screw coupling, characterized in that said driving element is made from bent sheet metal blank, said worm screw consists of spaced out pressed projections.
Claim 6
Dependent Claim
29 words
A device according to claim 1 characterized in that said support element is made from bent sheet metal blank, having inwardly extending projections for engaging with the driving element.
Claim 7
Dependent Claim
28 words
A device according to claim 5, characterized in that said support element has vertical edges edge to edge and openings for engaging vertical projections on the base element.
Claim 8
Dependent Claim
24 words
A device according to claim 1 which further comprises a stress distributing element between the teeth of the driving element and the support element.
Claim 9
Dependent Claim
33 words
A device according to claim 7, characterized in that said stress distributing element is annular-shaped, is made of sheet metal and has a front opening to allow the passage of the operating means.
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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) | 1994-08-19 | 1995-02-18 | 1995-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-08-19 | 1999-02-18 | 1999-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-08-19 | 2003-02-18 | 2003-08-20 | $7700.00 | Window Closed / Lapsed |