Patent US4235464A successfully refreshed from Google Patents.
US4235464A
Expired / Lapsed
US
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Door lock construction
Assignee: Individual
•
Filing: 1979-06-20
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Granted: 1980-11-25
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Expires: 1999-06-20
Abstract
Abstract A portable door lock is removably mounted on the inside of an inwardly swinging door to prevent the opening of the door to provide added security for the inhabitants of a dwelling. The door lock includes a solid block of material, such as wood, and has a plurality of steel rods embedded therein and extending outwardly from an end surface of the block. The block has a flat planar surface extending downwardly toward the rods and forming an exterior angle of approximately 150° therebetween. A plurality of complementary-shaped holes are drilled in the door frame and extend inwardly and away from the door at a predetermined angle whereby the planar block surface lies in abutting relationship with the inside door surface when the rods are inserted into the holes to prevent opening of the door. Plastic sleeves are mounted in the outer exposed ends of the holes to provide an attractive appearance thereto.
Inventors
- 👤 Richard E. Cantley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:23
CPC Classifications
E; E05; E05C; E05C19/00; E05C19/18; E05C19/184; Y; Y10; Y10T; Y10T292/00; Y10T292/34
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
160 words
In combination with an inwardly swinging door and adjacent door frame, an improved door lock construction including: (a) a block of rigid material having a surface adapted to abuttingly engage the inside surface of the door; (b) rigid rod means mounted on the block and projecting outwardly therefrom, said rod means forming an exterior angle with the door-engaging surface of the block in the range of approximately 120° to 165°; and (c) hole means formed in the door frame, said hole means having a size and configuration complementary to the size and configuration of the rod means for receiving the same, and said hole means projecting inwardly and away from the adjacent door at an angle with respect to the inside door surface, whereby the door-engaging surface of the block lies in abutting relationship with the door surface when the door is closed and the rod means is inserted into the door frame hole means preventing opening of the door.
Claim 2
Dependent Claim
160 words
In combination with an inwardly swinging door and adjacent door frame, an improved door lock construction including: (a) a block of rigid material having a surface adapted to abuttingly engage the inside surface of the door; (b) rigid rod means mounted on the block and projecting outwardly therefrom, said rod means forming an exterior angle with the door-engaging surface of the block in the range of approximately 120° to 165°; and (c) hole means formed in the door frame, said hole means having a size and configuration complementary to the size and configuration of the rod means for receiving the same, and said hole means projecting inwardly and away from the adjacent door at an angle with respect to the inside door surface, whereby the door-engaging surface of the block lies in abutting relationship with the door surface when the door is closed and the rod means is inserted into the door frame hole means preventing opening of the door.
Claim 3
Dependent Claim
56 words
The door lock construction defined in claim 1 in which the block has a generally truncated configuration defined by a pair of spaced parallel side surfaces, a bottom surface, and front and rear end surfaces; and in which the door-engaging surface is a flat planar surface extending downwardly from the rear surface toward the front surface.
Claim 4
Dependent Claim
58 words
The door lock construction defined in claim 1 in which the block is formed of wood and has a generally truncated configuration; in which the rod means is a plurality of rigid metalic rods embedded in the block and projecting outwardly therefrom; and in which the door-engaging surface is a flat planar surface angled downwardly toward the rods.
Claim 5
Dependent Claim
44 words
The door lock construction defined in claim 3 in which the hole means is a plurality of vertically spaced holes having a spacing complementary to the spacing of the rods; and in which plastic sleeves are inserted in the outer portion of the holes.
Claim 6
Dependent Claim
20 words
The door lock construction defined in claim 3 in which the rods extend outwardly from the block approximately three inches.
Claim 7
Dependent Claim
34 words
The door lock construction defined in claim 1 in which handle means is mounted on the block to facilitate the insertion and removal of the rod means into and out of the hole means.
Claim 8
Dependent Claim
52 words
The door lock construction defined in claim 1 in which the rod means includes a plurality of rods which lie in a first imaginary plane; in which said door-engaging block surface lies in a second imaginary plane; and in which said first and second planes form an exterior angle of approximately 150°.
Claim 9
Dependent Claim
138 words
An improved door lock construction adapted to be mounted on the inside of an inwardly swinging door adjacent the frame thereof, in which frame a plurality of inwardly extending holes have been formed; said lock construction including a block of rigid material having a door-engaging planar surface and a plurality of spaced rigid rods embedded in said block and projecting outwardly therefrom with said rods lying in a common imaginary plane; the planar surface of the block sloping downwardly toward the rods and forming an exterior angle with the plane of the rods in the range of approximately 120° to 165°; and the planar surface of the block being adapted to abuttingly engage the inside surface of the door to prevent inward movement of said door when the rods are inserted into the holes of the door frame.
Claim 10
Dependent Claim
138 words
An improved door lock construction adapted to be mounted on the inside of an inwardly swinging door adjacent the frame thereof, in which frame a plurality of inwardly extending holes have been formed; said lock construction including a block of rigid material having a door-engaging planar surface and a plurality of spaced rigid rods embedded in said block and projecting outwardly therefrom with said rods lying in a common imaginary plane; the planar surface of the block sloping downwardly toward the rods and forming an exterior angle with the plane of the rods in the range of approximately 120° to 165°; and the planar surface of the block being adapted to abuttingly engage the inside surface of the door to prevent inward movement of said door when the rods are inserted into the holes of the door frame.
Claim 11
Dependent Claim
55 words
The lock construction defined in claim 8 in which the block is formed of wood; in which a plurality of holes are formed in the block; in which the rods are formed with knurled ends; and in which the knurled rod ends are inserted into the block holes to embed said rods in said block.
Claim 12
Dependent Claim
20 words
The lock construction defined in claim 8 in which a handle is mounted on the block opposite of the rods.
Claim 13
Dependent Claim
22 words
The lock construction defined in claim 8 in which the block of rigid material is formed of a high strength plastic material.
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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) | 1983-11-25 | 1984-05-26 | 1984-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-25 | 1988-05-26 | 1988-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-25 | 1992-05-26 | 1992-11-25 | $7700.00 | Window Closed / Lapsed |