Patent US3897194A successfully refreshed from Google Patents.
Patent US3895599A successfully refreshed from Google Patents.
US3895599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cabinet door alarm device
Assignee: Individual
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Filing: 1974-08-30
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Granted: 1975-07-22
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Expires: 1994-08-30
Abstract
Abstract In a preferred embodiment of the invention, there is provided an alerting anti-theft cabinet alarm device utilizable for a cabinet having either a door pivoted on a hinge for pivoting outwardly or alternately a door sidewardly slidable resulting from a strip which acts to depress the alarm button upon the closing of the door, the main feature of the invention being that a mechanism both cocks and strikes by release of a door which depresses the button, release of door pressure on the trigger button permitting the button to become less depressed irrespective of the degree of slowness with which the pressure is released on the button, the alerting bell ringing always at full intensity.
Inventors
- 👤 Gerard J Berkowitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:02
CPC Classifications
G; G08; G08B; G08B13/00; G08B13/02; G08B13/08
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
374 words
A door-opening alarm device comprising in combination: a first lever means for providing contact and pivoted at a point spaced-away from one of upper ends of the lever arm means, a first end of the first lever arm means having a first contact surface; and alarm means for initiating a signal and having a signalinitiating second contact surface positioned to be contacted by said first contact surface; first biasing spring means for biasing said first lever arm in a direction such that said first contact surface is biased toward said second contact surface; second lever-arm means for intermittent forcing of said first contact surface away from said second contact surface by acting upon said first lever arm means intermittently in one of opposite to and fro alternate direction and having a third contact surface positioned for contact with a face of a closed door such that when in contact with the face of the closed door the first lever arm means is retained in a first direction such that the first contact surface is not forced away from the second contact surface, the second lever arm means being pivotably mounted at a point spaced away from at least one of opposite ends thereof, said one spaced away end of the second lever arm means being positioned for pressing against said first lever arm means in the direction such that force is impartable thereto for moving the first contact surface away from the second contact surface; second spring means for biasing said second lever arm means toward a second direction such that when a face of a closed door is moved from a retaining contact with said third contact surface said first contact surface is caused to move away from said second contact surface, biasing action of said second spring means being greater than biasing action of said first spring means; and spring biased-key means for providing force-imparting engagements of said second lever arm means with said first lever arm means when a face of a closed door is removed from retaining contact with said third contact surface and being mounted on one of the first and second lever arm means for engagement with the remaining other of the first and second lever arm means.
Claim 2
Dependent Claim
374 words
A door-opening alarm device comprising in combination: a first lever means for providing contact and pivoted at a point spaced-away from one of upper ends of the lever arm means, a first end of the first lever arm means having a first contact surface; and alarm means for initiating a signal and having a signalinitiating second contact surface positioned to be contacted by said first contact surface; first biasing spring means for biasing said first lever arm in a direction such that said first contact surface is biased toward said second contact surface; second lever-arm means for intermittent forcing of said first contact surface away from said second contact surface by acting upon said first lever arm means intermittently in one of opposite to and fro alternate direction and having a third contact surface positioned for contact with a face of a closed door such that when in contact with the face of the closed door the first lever arm means is retained in a first direction such that the first contact surface is not forced away from the second contact surface, the second lever arm means being pivotably mounted at a point spaced away from at least one of opposite ends thereof, said one spaced away end of the second lever arm means being positioned for pressing against said first lever arm means in the direction such that force is impartable thereto for moving the first contact surface away from the second contact surface; second spring means for biasing said second lever arm means toward a second direction such that when a face of a closed door is moved from a retaining contact with said third contact surface said first contact surface is caused to move away from said second contact surface, biasing action of said second spring means being greater than biasing action of said first spring means; and spring biased-key means for providing force-imparting engagements of said second lever arm means with said first lever arm means when a face of a closed door is removed from retaining contact with said third contact surface and being mounted on one of the first and second lever arm means for engagement with the remaining other of the first and second lever arm means.
Claim 3
Dependent Claim
124 words
A door-opening alarm device of claim 1, in which said spring biased-key means includes a key-biasing spring in a pivoted key biased by the key-biasing spring in a direction toward said third contact surface and in its mouNted state the pivoted key being biased against a stop abuttment preventing further pivoting toward said second direction and being pivotable against spring biasing of the key-biasing spring in a direction moving towards said direction from said second direction such that when a face of said door moves to a closed state to press against said third contact surface the third contact surface becomes moved from said second direction toward said first direction against biasing action of said second spring means while concurrently tripping said spring-biased key.
Claim 4
Dependent Claim
42 words
A door-opening alarm device of claim 2, in which said alarm means comprises a bell and said second contact surface comprises a surface of said bell which when struck by said first contact surface causes the bell to give off audible sound.
Claim 5
Dependent Claim
21 words
A door-opening alarm device of claim 3, in which said spring biased-key means is mounted on said first lever arm means.
Claim 6
Dependent Claim
134 words
A door-opening alarm device of claim 4, in which said spring-biased key means is mounted on an end of said first lever arm means opposite from that at which the first contact surface is located, and first pivot structure pivotably mounting the first lever arm means at a point intermediate between the first contact surface and the spring-biased key means in its mounted state, and in which the second lever arm means includes a fourth contact surface spaced-away from a fulcrum point of pivot of the second lever arm means, the fourth contact surface being the positioned for to and fro contact with said spring-biased lever in to and fro movement of the fourth contact surface from said first direction toward said second direction and from said second direction returnably toward said first direction.
Claim 7
Dependent Claim
89 words
A door-opening alarm device of claim 4, including a channel structure of a shape and position such that said third contact surface is movable reciprocatably in to and fro alternate motions, and depressable structure having spaced substantially plainer face with the structure mounted in a position such that the plainer face extends substantially angularly inclined relative to a leading thickness face of a sliding door whereby the depressable structure is depressable of said third contact surface when a slidable door is slid toward and over said third contact surface.
Claim 8
Dependent Claim
139 words
A door-opening alarm device of claim 6, in which said depressable structure is a flexible strip having each of opposite upper and lower face substantially flat, mounted on an outward face of the channeling structure with the distal portion of the strip being positioned over and with lower surface thereof in contact with said third contact surface such that when pressure is exerted on said upper surface thereof, the lower surface thereof is thereby caused to depress the third contact surface such that upon release of pressure on the strip''s upper surface when the third contact surface is in a depressed state the third contact surface is permitted to move outwardly in a direction from said first direction towards second direction as a sliding door is slid to an open state to result in a ringing of the bell.
Claim 9
Dependent Claim
105 words
A door-opening alarm device of claim 3, and a lever abutting structure mounted for spacing the first lever arm means from the alarm means and its second contact surface, and said first lever arm means including an elongated flexible element such that upon movement of the second lever arm means toward said second direction sufficiently to release the first lever arm means, the distal end portion of the first lever arm means becomes struck against the lever abutting structure causing the elongated flexible element to flex forwardly sufficiently for the first contact surface to strike the second contact surface resulting in initiating the alarm signal.
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) | 1978-07-21 | 1979-01-20 | 1979-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-21 | 1983-01-20 | 1983-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-21 | 1987-01-20 | 1987-07-22 | $7700.00 | Window Closed / Lapsed |