US5845589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Folding table leg system
Assignee: CABRIO DESIGN LLC
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Filing: 1997-05-06
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Granted: 1998-12-08
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Expires: 2017-05-06
Abstract
Abstract Folding table leg system for positive locking of a table leg in a down and locked position or for positive locking of a table leg in an up and locked position, where a spring loaded lever operated pawl automatically engages an extruded rotatable block member to achieve either an uplocked or downlocked position. A secondary safety lock is also provided. An alternate embodiment provides for a folding table leg system having a minimum of structural components which features primary tangential and wedge locking and secondary locking for massive load or violent shock load occurrence.
Inventors
- 👤 Joel W. Pfister
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:17
CPC Classifications
A; A47; A47B; A47B3/00; A47B3/08; A47B3/0809; A47B3/0815; A47B2200/00; A47B2200/0011; A47B2200/002; A47B2200/0029
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
181 words
A folding table leg system comprising: a. a locking base with a cross member and two opposing vertical members with planar bases, and including opposing lower pivot holes and opposing upper pivot holes; b. a geometrically configured latch member including a pivot pin at one end which engages into said lower pivot holes, a locking pawl in a mid-section, and an actuating tab at a second end; c. a spring means connecting between said locking base and said latch member and includes an angled edge with a rod for engaging under said cross member; and, d. a rotatable block member having at least three corners and opposing dowel pin pivots at a first corner, a downlock groove and an uplock groove at second and third opposing corners, and a threaded hole on a planar surface for table leg attachment whereby said rotatable block member rotates so as to allow the table leg to be locked in a positive parallel to the table when the pawl engages the uplock groove or a table supporting position when the pawl engages the downlock groove.
Claim 2
Dependent Claim
181 words
A folding table leg system comprising: a. a locking base with a cross member and two opposing vertical members with planar bases, and including opposing lower pivot holes and opposing upper pivot holes; b. a geometrically configured latch member including a pivot pin at one end which engages into said lower pivot holes, a locking pawl in a mid-section, and an actuating tab at a second end; c. a spring means connecting between said locking base and said latch member and includes an angled edge with a rod for engaging under said cross member; and, d. a rotatable block member having at least three corners and opposing dowel pin pivots at a first corner, a downlock groove and an uplock groove at second and third opposing corners, and a threaded hole on a planar surface for table leg attachment whereby said rotatable block member rotates so as to allow the table leg to be locked in a positive parallel to the table when the pawl engages the uplock groove or a table supporting position when the pawl engages the downlock groove.
Claim 3
Dependent Claim
22 words
The system of claim 1, wherein said latch member includes a spring anchor for receiving an angled end of said spring means.
Claim 4
Dependent Claim
14 words
The system of claim 1, wherein said latching member includes raised surfaces for interdigitation.
Claim 5
Dependent Claim
24 words
The system of claim 1, wherein said locking base includes a plurality of screw holes for screws engaging the underside of a table top.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-12-07 | 2002-06-08 | 2002-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-12-07 | 2006-06-08 | 2006-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-12-07 | 2010-06-08 | 2010-12-08 | $7700.00 | Window Closed / Lapsed |