Patent US3572874A successfully refreshed from Google Patents.
US3572874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal cabinets
Assignee: Fritz Schaefer GmbH
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Filing: 1969-10-20
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Granted: 1971-03-30
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Expires: 1989-10-20
Abstract
Abstract A sheet-metal cabinet having drawers slidable on rails fitted in the cabinet body, each rail having horizontal and vertical flanges wherein at the extremities of the vertical flanges are arranged lugs which engage in horizontal slots in the cabinet body and beneath the lugs there are perforations in the vertical flanges which correspond to perforations in the cabinet body and are traversed by locking elements resting on the upper side of the horizontal flanges so that the upper side of the locking elements provides a sliding surface for the underside of the drawers.
Inventors
- 👤 Ernst Hassel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:31
CPC Classifications
A; A47; A47B; A47B88/00; A47B88/40; A47B88/423; A47B88/43; A47B2210/00; A47B2210/0002; A47B2210/0051; A47B2210/0056; A47B2210/0062
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
116 words
A cabinet having drawers which are slidable from the front to the rear of the cabinet on rails fitted in the cabinet body, each of said rails consisting of a horizontal flange acting as a sliding surface and a vertical flange for fastening to the cabinet body, characterized by upwardly directed cranked lugs extending from the upper extremities of said vertical flanges and engaged in horizontal slots in the cabinet body, perforations located beneath said lugs and aligned with corresponding perforations in the cabinet body, and locking elements traversing aligned perforations and resting on the horizontal flanges, the upper sides of the locking elements acting as surfaces on which the undersides of the drawers are slidable.
Claim 2
Dependent Claim
116 words
A cabinet having drawers which are slidable from the front to the rear of the cabinet on rails fitted in the cabinet body, each of said rails consisting of a horizontal flange acting as a sliding surface and a vertical flange for fastening to the cabinet body, characterized by upwardly directed cranked lugs extending from the upper extremities of said vertical flanges and engaged in horizontal slots in the cabinet body, perforations located beneath said lugs and aligned with corresponding perforations in the cabinet body, and locking elements traversing aligned perforations and resting on the horizontal flanges, the upper sides of the locking elements acting as surfaces on which the undersides of the drawers are slidable.
Claim 3
Dependent Claim
50 words
A cabinet according to claim 1, characterized in that the perforations are vertical, elongated slots, and that the locking elements are flat and have opposed notches which on insertion of the locking elements into the perforations and rotation through 90* lock the rails to the sidewalls of the cabinet body.
Claim 4
Dependent Claim
26 words
A cabinet according to claim 1, characterized in that pegs extend from the underside of the locking elements and engage the horizontal flanges of the rails.
Claim 5
Dependent Claim
18 words
A cabinet according to claim 1, characterized in that the upper sides of the locking elements are convex.
Claim 6
Dependent Claim
39 words
A cabinet according to claim 1, characterized in that wearing pieces fasten to the upper and lower edges of the drawers close to the rear extremities of sidewalls of the drawers and cooperate with the horizontal and vertical flanges.
Claim 7
Dependent Claim
34 words
A cabinet according to claim 5, characterized in that additional wearing pieces are situated on the vertical flanges close to the front extremities of the rails and cooperates with the sidewalls of the drawers.
Claim 8
Dependent Claim
43 words
A cabinet according to claim 1, characterized in that extensions of the sidewalls of a drawer extend beyond the rear wall of the drawer and the upper edges of the extension diverge from the rear wall towards the lower edges of the extension.
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) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |