Patent US4288130A successfully refreshed from Google Patents.
US4288130A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filing systems and other collapsible structural units
Assignee: LYNFIELD H GEOFFREY
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Filing: 1979-01-17
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Granted: 1981-09-08
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Expires: 1999-01-17
Abstract
Abstract This invention relates to filing cabinets and knock-down structural units suitable for furniture and enclosures protecting, storing, and housing articles comprising at least two main supports; at least two sets of equi-distant multiple locking slots on each support; and at least two locking frames with multiple bars pressure fitted into said locking slots. In a preferred form, I provide a filing cabinet including drawers slidably supported by the locking frames which also serve as drawer runners.
Inventors
- 👤 Robert J. Baldwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:01
CPC Classifications
A; A47; A47B; A47B67/00; A47B67/04; A47B31/00; A47B47/00; A47B47/02; A47B47/03; A47B88/00; A47B88/40; A47B88/483; A47B2031/003; A47B2210/00; A47B2210/0002; A47B2210/0029; A47B2210/0043; A47B2210/0051; A47B2210/0059
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
75 words
A collapsible structural storage unit comprising in combination: (1) a pair of profiled main frames; (2) locking slots arranged in pairs along the vertical sides of the said main frames; (3) at least two locking frames with multiple bars fitting tightly with a spring action into said locking slots and rigidly locking the main frames together; and (4) drawers and like receptacles slidably supported by said locking frames which are also serving as drawer runners.
Claim 2
Dependent Claim
75 words
A collapsible structural storage unit comprising in combination: (1) a pair of profiled main frames; (2) locking slots arranged in pairs along the vertical sides of the said main frames; (3) at least two locking frames with multiple bars fitting tightly with a spring action into said locking slots and rigidly locking the main frames together; and (4) drawers and like receptacles slidably supported by said locking frames which are also serving as drawer runners.
Claim 3
Dependent Claim
110 words
A collapsible structural storage unit comprising in combination: (1) a pair of profiled main frames; (2) locking slots arranged in pairs along the vertical sides of the said main frames; (3) at least two locking frames fitting tightly with a spring action into said locking slots and rigidly locking the main frames together; and (4) drawers and like receptacles slidably supported by said locking frames which are also serving as drawer runners, the locking frames consisting of at least two parallel U-shaped outer locking bars fitting tightly into said locking slots and at least two inner runner bars holding said outer locking bars together and serving as runners for drawers.
Claim 4
Dependent Claim
110 words
A collapsible structural storage unit comprising in combination: (1) a pair of profiled main frames; (2) locking slots arranged in pairs along the vertical sides of the said main frames; (3) at least two locking frames fitting tightly with a spring action into said locking slots and rigidly locking the main frames together; and (4) drawers and like receptacles slidably supported by said locking frames which are also serving as drawer runners, the locking frames consisting of at least two parallel U-shaped outer locking bars fitting tightly into said locking slots and at least two inner runner bars holding said outer locking bars together and serving as runners for drawers.
Claim 5
Dependent Claim
38 words
A storage unit according to claim 2, wherein the inner runner bars are bent double in hair-pin fashion and the rounded ends project towards the front of the unit to hold wheels acting as runners for the drawers.
Claim 6
Dependent Claim
27 words
A storage unit according to claim 3, wherein drawer guides slide over the inner runner bars and are engaged into openings at the rear of the drawers.
Claim 7
Dependent Claim
17 words
A storage unit according to claim 2, wherein side panels are hung from the outer locking bars.
Claim 8
Dependent Claim
31 words
A storage unit according to claim 2, wherein a flat top panel with depending sides is press-fitted over the upper ends of the main frames to form a flat working surface.
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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) | 1984-09-07 | 1985-03-09 | 1985-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-07 | 1989-03-09 | 1989-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-07 | 1993-03-09 | 1993-09-08 | $7700.00 | Window Closed / Lapsed |