US3628356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door lock protection device
Assignee: Individual
•
Filing: 1970-04-22
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Granted: 1971-12-21
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Expires: 1990-04-22
Abstract
Abstract An escutcheon which surrounds and centers the cylinder in a door lock and has integrally formed therewith a tubular securement cylinder which extends through the lock hole in the door. The tubular securement cylinder has a transverse hole through at least one wall. This transverse hole is in alignment with the latch housing and intersects the cylinder axis so that the latch housing extends through the securement cylinder wall to prevent rotation and removal of the escutcheon and securement cylinder and prevent burglar access to the latch.
Inventors
- 👤 George L Deahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:32
CPC Classifications
E; E05; E05B; E05B15/00; E05B15/02; Y; Y10; Y10T; Y10T70/00; Y10T70/70; Y10T70/7153; Y10T70/7322; Y10T70/7345; Y10T70/80; Y10T70/8432; Y10T70/8459; Y10T70/8486; Y10T70/8568; Y10T70/8838
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
269 words
A door lock protection device comprising: an escutcheon and a securement cylinder integrally formed therewith of nonmalleable metal; an interior opening extending through said escutcheon and said securement cylinder said opening being dimensioned to receive the body of a lock cylinder, said opening having an axis which is substantially the axis of revolution of said escutcheon and said securement cylinder, said opening being cylindrical so that said escutcheon and said securement cylinder are tubular having the interior and outer surfaces thereof of revolution, substantially about said axis; said securement cylinder having a first outer surface and said escutcheon having a second outer surface of greater dimension than said first outer surface so that the escutcheon extends radially beyond said securement cylinder to define a shoulder which is engageable upon the face of a door, said outer surface of said escutcheon being substantially the surface of a truncated right circular cone having its larger diameter toward said securement cylinder, a counterbore formed in said escutcheon with respect to the interior cylindrical opening therethrough, said counterbore defining a rear stop shoulder and a guide bore, said rear stop shoulder and said guide bore being dimensioned for receiving and radially positioning tHe front flange on a lock cylinder with respect to said escutcheon; and a crossbore through at least one wall of said securement cylinder, said crossbore having an axis substantially intersecting with and at right angles to said axis of said interior opening, said crossbore being dimensioned to receive a portion of a bolt mechanism so that said door lock protection device is restrained from rotation or removal from the door.
Claim 2
Dependent Claim
269 words
A door lock protection device comprising: an escutcheon and a securement cylinder integrally formed therewith of nonmalleable metal; an interior opening extending through said escutcheon and said securement cylinder said opening being dimensioned to receive the body of a lock cylinder, said opening having an axis which is substantially the axis of revolution of said escutcheon and said securement cylinder, said opening being cylindrical so that said escutcheon and said securement cylinder are tubular having the interior and outer surfaces thereof of revolution, substantially about said axis; said securement cylinder having a first outer surface and said escutcheon having a second outer surface of greater dimension than said first outer surface so that the escutcheon extends radially beyond said securement cylinder to define a shoulder which is engageable upon the face of a door, said outer surface of said escutcheon being substantially the surface of a truncated right circular cone having its larger diameter toward said securement cylinder, a counterbore formed in said escutcheon with respect to the interior cylindrical opening therethrough, said counterbore defining a rear stop shoulder and a guide bore, said rear stop shoulder and said guide bore being dimensioned for receiving and radially positioning tHe front flange on a lock cylinder with respect to said escutcheon; and a crossbore through at least one wall of said securement cylinder, said crossbore having an axis substantially intersecting with and at right angles to said axis of said interior opening, said crossbore being dimensioned to receive a portion of a bolt mechanism so that said door lock protection device is restrained from rotation or removal from the door.
Claim 3
Dependent Claim
67 words
The door lock protection device of claim 1 wherein: a spacer ring is positioned in said counterbore in said escutcheon, said spacer ring being dimensioned to engage the front flange of a lock cylinder to retain the lock cylinder with respect to said door lock protection device and maintain the front face of the lock cylinder substantially in line with the front face of said protection device.
Claim 4
Dependent Claim
46 words
The door lock protection device of claim 1 wherein: said securement cylinder has a length from its end to said escutcheon shoulder substantially equal to the thickness of a door, and an interior escutcheon is engaged against said securement cylinder to prevent overcompression of a door.
Claim 5
Dependent Claim
104 words
In combination: the door lock protection device of claim 1; a door; said door having a first hole therethrough, said door lock protective device being engaged substantially through said first hole through said door; a second hole in said door from the edge thereof and intersecting said first hole thereof; a bolt housing engaged in said second hole, said bolt housing extending into said crossbore to lock said door lock protection device with respect to said door until said bolt housing is removed, so that said escutcheon cannot be wrenched away for access to said bolt housing from the front face of said door.
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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) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |