Patent US3799639A successfully refreshed from Google Patents.
US3799639A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filing cabinet
Assignee: Individual
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Filing: 1972-11-21
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Granted: 1974-03-26
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Expires: 1992-11-21
Abstract
Abstract A multi-drawer file cabinet of the type vulnerable to pitching or tipping forward if subjected to the weight shift occasioned by the opening of more than one drawer at a time, in which the opening of the drawers is regulated to one at a time by a pivotal lever, the pivotal traverse of which is produced initially by the opening movement of the drawer and thereafter by spring urgency. The control is thus not significantly dependent on spring urgency which is vulnerable to malfunction over prolonged periods of use.
Inventors
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Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:53
CPC Classifications
E; E05; E05B; E05B65/00; E05B65/46; E05B65/462; E05B65/463
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
208 words
A filing cabinet including an outer housing, a superposed arrangement of at least two file drawers within said housing each having depending wall means thereon, each drawer being operatively arranged for lateral movement between closed and open positions relative to said housing, and drawer-movement control means comprising a vertically oriented drawer-locking member disposed within said housing adjacent said drawers operatively arranged for veritcal movement from a normal position unconnected to any of said drawers into an elevated position in latched engagement with each drawer in said closed position, pivotally mounted levers within said housing, each said pivotally mounted lever being L-shaped and having a horizontal leg in intersecting lifting relation with said drawer-locking member and a vertical leg extending into adjacent position with a cooperating closed drawer so as to be contacted by said depending wall means thereon such that opening movement of any one said drawer results in said pivoting movement of said cooperating lever and the further movement of said drawer-locking member into latching engagement with said other closed drawers, and an elongated spring for each said pivoting lever operatively arranged to hold said lever in said pivoted positions of movement thereof, whereby only one drawer of said superposed arrangement can be opened at a time.
Claim 2
Dependent Claim
208 words
A filing cabinet including an outer housing, a superposed arrangement of at least two file drawers within said housing each having depending wall means thereon, each drawer being operatively arranged for lateral movement between closed and open positions relative to said housing, and drawer-movement control means comprising a vertically oriented drawer-locking member disposed within said housing adjacent said drawers operatively arranged for veritcal movement from a normal position unconnected to any of said drawers into an elevated position in latched engagement with each drawer in said closed position, pivotally mounted levers within said housing, each said pivotally mounted lever being L-shaped and having a horizontal leg in intersecting lifting relation with said drawer-locking member and a vertical leg extending into adjacent position with a cooperating closed drawer so as to be contacted by said depending wall means thereon such that opening movement of any one said drawer results in said pivoting movement of said cooperating lever and the further movement of said drawer-locking member into latching engagement with said other closed drawers, and an elongated spring for each said pivoting lever operatively arranged to hold said lever in said pivoted positions of movement thereof, whereby only one drawer of said superposed arrangement can be opened at a time.
References Cited (Backward Citations)
US3323849A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |