Patent US3631445A successfully refreshed from Google Patents.
US3631445A
Expired / Lapsed
US
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Burglar alarm and locking device for drawer
Assignee: Individual
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Filing: 1969-12-09
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Granted: 1971-12-28
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Expires: 1989-12-09
Abstract
Abstract A burglar alarm and locking device for a key-locked drawer for holding valuables in which the burglar alarm is activated as soon as an unauthorized person tries to forcibly open the drawer without using the required key. Automatic drawer locking means is also actuated for preventing the drawer from being forced open to an extent where the unauthorized person can remove valuables such as currency from the drawer. This same means will prevent the drawer from being completely closed by the unauthorized person.
Inventors
- 👤 Alfred G Shew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:31
CPC Classifications
G; G08; G08B; G08B13/00; G08B13/02; G08B13/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
194 words
In combination: a. a casing for a drawer; b. a key-locked drawer slidably mounted in said casing; c. a drawer-actuated switch closed when the drawer is forced into a partially opeNed position without first using the key to unlock the drawer; d. an alarm and drawer latch circuit electrically operated when said drawer switch is closed for sounding the alarm and engaging with said partially opened drawer for preventing it from being opened beyond a predetermined point; e. said drawer latch circuit including a solenoid which is energized by the closing of said alarm and drawer latch circuit; f. a swingable drawer latch carried by said casing and operatively connected to the armature of said solenoid; g. spring means for holding said drawer latch in inoperative position when the solenoid is deenergized; and h. a stop carried by said drawer and being movable therewith; said solenoid when energized moving the armature for swinging said drawer latch into operative position so as to lie in the path taken by the drawer stop when the drawer is initially forced toward open position, the latch engaging with said stop for preventing any further opening of the drawer.
Claim 2
Dependent Claim
194 words
In combination: a. a casing for a drawer; b. a key-locked drawer slidably mounted in said casing; c. a drawer-actuated switch closed when the drawer is forced into a partially opeNed position without first using the key to unlock the drawer; d. an alarm and drawer latch circuit electrically operated when said drawer switch is closed for sounding the alarm and engaging with said partially opened drawer for preventing it from being opened beyond a predetermined point; e. said drawer latch circuit including a solenoid which is energized by the closing of said alarm and drawer latch circuit; f. a swingable drawer latch carried by said casing and operatively connected to the armature of said solenoid; g. spring means for holding said drawer latch in inoperative position when the solenoid is deenergized; and h. a stop carried by said drawer and being movable therewith; said solenoid when energized moving the armature for swinging said drawer latch into operative position so as to lie in the path taken by the drawer stop when the drawer is initially forced toward open position, the latch engaging with said stop for preventing any further opening of the drawer.
Claim 3
Dependent Claim
46 words
The combination as set forth in claim 1: and in which a. said drawer having a second stop spaced from the first-mentioned stop but lying in the path of said latch for preventing the complete closing of the drawer so long as the solenoid remains energized.
Claim 4
Dependent Claim
184 words
In combination: a. a casing for a drawer; b. a key-locked drawer slidably mounted in said casing; c. a drawer-actuated switch closed when the drawer is forced into a partially opened position without first using the key to unlock the drawer; d. an alarm and drawer latch circuit electrically operated when said drawer switch is closed for sounding the alarm and engaging with said partially opened drawer for preventing it from being opened beyond a predetermined point; e. said drawer latch circuit including a solenoid which is energized by the closing of said alarm and drawer latch circuit; f. said solenoid being carried by said drawer and having an armature that is movable upwardly into operative position when said solenoid is energized; and g. a stop carried by the portion of said casing that overlies the drawer; said solenoid when energized moving said armature upwardly so that said stop will lie in the path of the upper end of said armature as the drawer is initially forced toward open position, the armature engaging with said stop for preventing any further opening of the drawer.
Claim 5
Dependent Claim
184 words
In combination: a. a casing for a drawer; b. a key-locked drawer slidably mounted in said casing; c. a drawer-actuated switch closed when the drawer is forced into a partially opened position without first using the key to unlock the drawer; d. an alarm and drawer latch circuit electrically operated when said drawer switch is closed for sounding the alarm and engaging with said partially opened drawer for preventing it from being opened beyond a predetermined point; e. said drawer latch circuit including a solenoid which is energized by the closing of said alarm and drawer latch circuit; f. said solenoid being carried by said drawer and having an armature that is movable upwardly into operative position when said solenoid is energized; and g. a stop carried by the portion of said casing that overlies the drawer; said solenoid when energized moving said armature upwardly so that said stop will lie in the path of the upper end of said armature as the drawer is initially forced toward open position, the armature engaging with said stop for preventing any further opening of the drawer.
Claim 6
Dependent Claim
67 words
The combination as set forth in claim 3: and in which a. a second stop is carried by the portion of said casing that overlies the drawer and being spaced from the first-mentioned stop and lying in the path of said armature when the solenoid is energized, said second stop being positioned for preventing the complete closing of the drawer so long as the solenoid remains energized.
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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) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |