Patent US3765709A successfully refreshed from Google Patents.
US3765709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door lock mechanism
Assignee: WYCK W VAN
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Filing: 1971-09-10
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Granted: 1973-10-16
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Expires: 1991-09-10
Abstract
Abstract A door lock mechanism having a safety pin of magnetic material to prevent unauthorized intrusion. The safety pin is a bolt supported in a housing located in a door jamb and extending through an aperture located within a standard receptacle for receiving the standard door-mounted bolt. The pin is reciprocated upon a spring and normally is extended by the spring toward the door-mounted bolt. The pin extends into a longitudinal bore located at the end of the door-mounted bolt which rests in the receptacle when the door is closed. Two wall-pivoted lever arms are connected to one end of the pin to provide means for manually reciprocating the pin. Access to the arms is through a locked box. A coil surrounding the pin may be activated with electric current through an interconnecting switch to cause the door bolt to be magnetically held by the striker plate receptacle and the pin.
Inventors
- 👤 Wyck W Van
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:35
CPC Classifications
E; E05; E05B; E05B63/00; E05B63/24; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0801; Y10T292/0834; Y10T292/0836; Y10T292/096; Y10T292/0969; Y10T292/097; Y10T292/0994; Y10T292/1014; Y10T292/1021; Y10T292/68; Y10T292/696; Y10T292/699
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
152 words
A door lock mechanism, comprising: a bolt having an elongated bore, said bolt adapted to be mounted on a door for movement relative to the door and beyond the door; a housing adapted to be mounted on a door jamb adjacent the bolt, said housing having an apertured receptacle to receive the bolt when the door is in a closed position; a pin connected to the housing and extendable through the aperture of the receptacle and beyond the housing and door jamb, said pin extendable upon a line coincident with a centerline of the elongated bore of the bolt; means connected to the pin for moving the pin across the space between the door and door jamb into and out of the bore of the bolt; and means connected to the bolt for moving the bolt across the space between the door and door jamb into and out of the housing receptacle.
Claim 2
Dependent Claim
152 words
A door lock mechanism, comprising: a bolt having an elongated bore, said bolt adapted to be mounted on a door for movement relative to the door and beyond the door; a housing adapted to be mounted on a door jamb adjacent the bolt, said housing having an apertured receptacle to receive the bolt when the door is in a closed position; a pin connected to the housing and extendable through the aperture of the receptacle and beyond the housing and door jamb, said pin extendable upon a line coincident with a centerline of the elongated bore of the bolt; means connected to the pin for moving the pin across the space between the door and door jamb into and out of the bore of the bolt; and means connected to the bolt for moving the bolt across the space between the door and door jamb into and out of the housing receptacle.
Claim 3
Dependent Claim
29 words
A door lock mechanism as recited in claim 1 wherein the movement of the bolt is reciprocative, and the elongated bore is longitudinal substantially transverse to the door edge.
Claim 4
Dependent Claim
29 words
A door lock mechanism as recited in claim 2 and further comprising: a striker plate mounted upon a wall of the receptacle intermediate the receptacle wall and the bolt.
Claim 5
Dependent Claim
46 words
A door lock mechanism as recited in claim 3 and further comprising: a box mounted upon the outside portion of the wall near the door and enclosing exposed portions of the pin moving means, said box having a door; and means for locking the box door.
Claim 6
Dependent Claim
72 words
A door lock mechanism as recited in claim 4 wherein the pin moving means comprises an inside lever arm and an outside lever arm each pivotally connected to one end of the pin, the inside arm extending through the inside wall and the outside arm extending through the outside wall, both arms being pivotally connected to the wall at a location intermediate the pin connection and the free end of the arm.
Claim 7
Dependent Claim
60 words
A door lock mechanism as recited in claim 5 wherein the pin and receptacle are of a magnetic material, and further comprising: a coil surrounding the pin, said coil adapted to conduct electric current; means for supplying electric current to the coil; and an outside switch means located within the box for controlling the electric current supplied to the coil.
Claim 8
Dependent Claim
30 words
A door lock mechanism as recited in claim 6, and further comprising: an inside switch means mounted on the inside wall for controlling the electric current supplied to the coil.
References Cited (Backward Citations)
US1038663A
Cited
US1358885A
Cited
US1684980A
Cited
US2767011A
Cited
GB783438A
Cited
US2970856A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-15 | 1977-04-16 | 1977-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-15 | 1981-04-16 | 1981-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-15 | 1985-04-16 | 1985-10-16 | $7700.00 | Window Closed / Lapsed |