US3702549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High security door lock
Assignee: Individual
•
Filing: 1970-10-22
•
Granted: 1972-11-14
•
Expires: 1990-10-22
Abstract
Abstract A high security-unit-type, door lock having opposite side escutcheon plates which are drawn tightly against the opposite faces of the door by means accessible only from the edge of the door, so that the escutcheon plates cannot be removed when the door is closed. The lock cylinder and plug have longitudinallyspaced, radially-extending, tumbler pins therein, spring biased toward the center of the lock, the plug being formed of body end sections which are relatively rotatable for assembly at 90* incremental positions. The end plugs determine the rotational position in which the key enters the lock whereby four lock combinations are provided for by relative rotation between the ends and body of the plug without changing the lengths of the tumbler pins. The lock plug directly drives bolt-extending means over-center as the plug rotates 90* to prevent the bolt being pushed back into the lock from the exterior thereof. In the 90* , bolt-extended position of the plug, the key may be withdrawn from the lock without rotating the plug back to its original keyinsert position. The key may enter the lock from either side, using the same cylinder and tumbler pins, and the key is of cylindrical shape having straight through transverse notches milled in its outer surface spaced 90* about the circumference of the key and spaced longitudinally thereof in accordance with the tumbler pin spacing.
Inventors
- 👤 George B Solovieff
- 👤 Paul G Solovieff
- 👤 Stephen W Solovieff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:49
CPC Classifications
E; E05; E05B; E05B63/00; E05B63/0017; E05B15/00; E05B15/0086; E05B27/00; E05B19/00; E05B19/0017; E05B19/0041; E05B19/0047; E05B63/0056; E05B63/006; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/096; Y10T292/1014; Y10T292/1015; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5199; Y10T70/5246; Y10T70/5296; Y10T70/5319; Y10T70/5341; Y10T70/70; Y10T70/7441; Y10T70/7486; Y10T70/7508; Y10T70/7559; Y10T70/7565; Y10T70/7655; Y10T70/7667; Y10T70/7684; Y10T70/7729; Y10T70/80; Y10T70/8432; Y10T70/8459; Y10T70/8541
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
139 words
A door lock comprising: a lock body adapted to be mounted in a door adjacent the front edge thereof; a lock bolt; means mounting said lock bolt for projection and retraction movements relative to the front edges of the lock and door; key-controlled means for projecting and retracting said bolt; escutcheon plates on opposite sides of said lock body and having surfaces extending therebeyond to be engageable with the opposite faces of the door; positioning means between said escutcheon plates connected thereto to hold said plates in a preselected spaced relation, and oppositely operable to positively move said plates alternately closer together and farther apart; and means accessible only from the front edge of the door for operating said positioning means to move said escutcheon plates into and out of clamping engagement with the opposite faces of the door.
Claim 2
Dependent Claim
139 words
A door lock comprising: a lock body adapted to be mounted in a door adjacent the front edge thereof; a lock bolt; means mounting said lock bolt for projection and retraction movements relative to the front edges of the lock and door; key-controlled means for projecting and retracting said bolt; escutcheon plates on opposite sides of said lock body and having surfaces extending therebeyond to be engageable with the opposite faces of the door; positioning means between said escutcheon plates connected thereto to hold said plates in a preselected spaced relation, and oppositely operable to positively move said plates alternately closer together and farther apart; and means accessible only from the front edge of the door for operating said positioning means to move said escutcheon plates into and out of clamping engagement with the opposite faces of the door.
Claim 3
Dependent Claim
100 words
The lock defined in claim 1 in which said escutcheon plate positioning and operating means comprise: cam means movable toward the front and back of said lock body; screw means accessible only from the front edge of the door for moving said cam means; two oppositely inclined sets of camming surfaces on said cam means; and means on said escutcheon plates engageable respectively with said oppositely inclined cam surfaces for moving the escutcheon plates both into and out of clamping engagement with the opposite faces of the door upon movement of said cam means forwardly and rearwardly of the lock.
Claim 4
Dependent Claim
91 words
The lock defined in claim 1 including: a first front edge plate removably secured to the lock body; openings through said first edge plate aligned with the means accessible only from the front edge of the door to provide manipulating access thereto, said openings being smaller than said means to prevent removal thereof while said edge plate is in place; and a finish front edge plate attachable to the front edge of the door and covering said first front edge plate to cover the openings therethrough and the attachment means therefor.
Claim 5
Dependent Claim
265 words
The lock defined in claim 1 in which said key-controlled means comprises: a lock cylinder; a cylinder plug rotatably mounted in said lock cylinder; tumbler pin bores extending through said lock cylinder and cylinder plug, said bores extending radially and being spaced longitudinally of the lock cylinder and plug and in groups circumferentially thereof at uniform angular spacings so that the bores in the cylinder and plug align in several angularly relative positions of said cylinder and plug; an arm mounted on said plug to be rotated therewith; a key insertable in said plug to rotate it; a link pivotally interconnecting said arm and said bolt for projecting and retracting it, the bores in said plug in the projected position of said bolt aligning with the next angularly adjacent group of bores in the cylinder so that the operating key may be withdrawn from the plug in the rotated position thereof and without returning to the initial key-inserting position; said cylinder plug having an end section at one of said plates mountable on the plug in different angular positions spaced apart by increments of the uniform spacing angle between said groups of tumbler pin bores; and means for securing said end section to said plug in said different angular positions; said end section having key-indexing means thereon for receiving a key in a preselected angular relationship with said end section, whereby different angular relationships between said cylinder plug and said end section produce different lock combinations equal in number to the number of groups of bores, without changing the individual tumbler pins within the plug.
Claim 6
Dependent Claim
43 words
The lock defined in claim 4 in which said groups are four in number, spaced 90* apart, and said plug sections may be assembled in four different angular relationships, 90* apart, to give four different lock combinations without changing the individual tumbler pins.
Claim 7
Dependent Claim
106 words
The lock defined in claim 4 in which: said cylinder plug has a cylindrical keyhole therein, said operating key for the lock has a cylindrical shank insertable in said keyhole; and coding grooves in said key shank cut straight through from side to side in a series spaced longitudinally of the key in accordance with the tumbler pin bore spacing and disposed in groups spaced circumferentially of the shank at angular distances corresponding to the angular spacing between the groups of tumbler pin bores so that the coding notches will align with the tumbler pins in their bores after the key is inserted into the keyhole.
Claim 8
Dependent Claim
215 words
A door lock comprising: a lock body adapted to be mounted in a door adjacent the front edge thereof; a lock bolt; means mounting said lock bolt for projection and retraction movements relative to the front edges of the lock and door; a lock cylinder; a lock plug rotatably mounted in said lock cylinder; means interconnecting said cylinder plug and lock bolt for movement of the latter as the cylinder plug is rotated; tumbler pin radial bores in said lock cylinder and cylinder plug spaced longitudinally thereof and in groups circumferentially in uniform angular relations, said cylinder plug having relatively angularly shiftable end and body sections which may be assembled in different positions angularly spaced by the uniform angular distance between said bore groupings and equal in number to the number of said groups: means for securing said end section to said body section in said different positions; and means on said end section for admitting a key into said plug in a preselected angular relationship with said end section, whereby to provide different combinations equal in number to the number of said groups by shifting the relative angular positions of the end and body sections of the cylinder plug but without change in the individual tumbler pins in the body section of the plug.
Claim 9
Dependent Claim
215 words
A door lock comprising: a lock body adapted to be mounted in a door adjacent the front edge thereof; a lock bolt; means mounting said lock bolt for projection and retraction movements relative to the front edges of the lock and door; a lock cylinder; a lock plug rotatably mounted in said lock cylinder; means interconnecting said cylinder plug and lock bolt for movement of the latter as the cylinder plug is rotated; tumbler pin radial bores in said lock cylinder and cylinder plug spaced longitudinally thereof and in groups circumferentially in uniform angular relations, said cylinder plug having relatively angularly shiftable end and body sections which may be assembled in different positions angularly spaced by the uniform angular distance between said bore groupings and equal in number to the number of said groups: means for securing said end section to said body section in said different positions; and means on said end section for admitting a key into said plug in a preselected angular relationship with said end section, whereby to provide different combinations equal in number to the number of said groups by shifting the relative angular positions of the end and body sections of the cylinder plug but without change in the individual tumbler pins in the body section of the plug.
Claim 10
Dependent Claim
54 words
The lock defined in claim 7 in which said groups are four in number spaced uniformly 90* apart and in which the end section is associated with the body section of the plug in four different positions, likewise spaced 90* apart, to provide four different combinations of the lock without changing individual tumbler pins.
Claim 11
Dependent Claim
76 words
The lock defined in cLaim 7 in which: the key hole through said cylinder plug is of cylindrical shape, and further including: an operating key for said lock having a cylindrical shank fitting said keyhole, and straight through grooves in its periphery spaced longitudinally in accordance with the longitudinal spacing between tumbler pin bores in the cylinder plug and spaced circumferentially in groups according to the angular spacing between the groups of the tumbler pin bores.
Claim 12
Dependent Claim
196 words
A door lock comprising: a lock body adapted to be mounted in a door adjacent the front edge thereof; a lock bolt; means mounting said lock bolt for projection and retraction movements relative to the front edges of the lock and door; key-controlled means for projecting and retracting said bolt; escutcheon plates on opposite sides of said lock body and having surfaces extending therebeyond to be engageable with the opposite faces of the door; a cam plate disposed between said escutcheon plates and supported for back and forth movement toward the front and back of said lock body, said cam plate having oppositely inclined slots therein; a pin on each of said escutcheon plates extending into one of said slots and engageable with the opposite side walls thereof during back and forth motion of said cam plate, whereby said plate acts through said pins to draw said escutcheon plates together in one direction of movement of said cam plate and to spread said escutcheon plates apart in the opposite direction of movement of the cam plate; and means accessible only from the front edge of said lock body for moving said cam plate back and forth.
Claim 13
Dependent Claim
196 words
A door lock comprising: a lock body adapted to be mounted in a door adjacent the front edge thereof; a lock bolt; means mounting said lock bolt for projection and retraction movements relative to the front edges of the lock and door; key-controlled means for projecting and retracting said bolt; escutcheon plates on opposite sides of said lock body and having surfaces extending therebeyond to be engageable with the opposite faces of the door; a cam plate disposed between said escutcheon plates and supported for back and forth movement toward the front and back of said lock body, said cam plate having oppositely inclined slots therein; a pin on each of said escutcheon plates extending into one of said slots and engageable with the opposite side walls thereof during back and forth motion of said cam plate, whereby said plate acts through said pins to draw said escutcheon plates together in one direction of movement of said cam plate and to spread said escutcheon plates apart in the opposite direction of movement of the cam plate; and means accessible only from the front edge of said lock body for moving said cam plate back and forth.
Claim 14
Dependent Claim
205 words
A door lock comprising: a lock body adapted to be mounted in a door adjacent the front edge thereof; a lock bolt; means mounting said lock bolt for projection and retraction movements relative to the front edges of the lock and door; key-controlled means for projecting and retracting said bolt; escutcheon plates on opposite sides of said lock body and having surfaces extending therebeyond to be engageable with the opposite faces of the door; means accessible only from the front edge of the door for moving said escutcheon plates into and out of clamping engagement with the opposite faces of the door; said means for moving said escutcheon plates comprising: a worm gear extending longitudinally of the lock and having an operating head accessible only from the front edge of the door; a worm wheel mounted for rotational movement only in means rigid with one of the escutcheon plates; and screw means rotatable by said worm gear and threaded into the other of said escutcheon plates, whereby rotation of the worm gear rotates said worm wheel and screw means to move said escutcheon plates relative to each other transversely of the lock into and out of clamping engagement with the opposite faces of the door.
Claim 15
Dependent Claim
205 words
A door lock comprising: a lock body adapted to be mounted in a door adjacent the front edge thereof; a lock bolt; means mounting said lock bolt for projection and retraction movements relative to the front edges of the lock and door; key-controlled means for projecting and retracting said bolt; escutcheon plates on opposite sides of said lock body and having surfaces extending therebeyond to be engageable with the opposite faces of the door; means accessible only from the front edge of the door for moving said escutcheon plates into and out of clamping engagement with the opposite faces of the door; said means for moving said escutcheon plates comprising: a worm gear extending longitudinally of the lock and having an operating head accessible only from the front edge of the door; a worm wheel mounted for rotational movement only in means rigid with one of the escutcheon plates; and screw means rotatable by said worm gear and threaded into the other of said escutcheon plates, whereby rotation of the worm gear rotates said worm wheel and screw means to move said escutcheon plates relative to each other transversely of the lock into and out of clamping engagement with the opposite faces of the door.
Claim 16
Dependent Claim
49 words
The lock defined in claim 11 in which said worm wheel is co-axially mounted adjacent the end of said screw means opposite to that threaded into said other escutcheon plate and in which said screw means and worm gear are both mounted for rotation in said one escutcheon plate.
Claim 17
Dependent Claim
199 words
A high-security door lock mountable in a notched edge of a door, and comprising: a pair of escutcheon plates disposed in spaced apart relation and having adjacent faces for engaging opposite faces of the door around the notch therein, at east one of said escutcheon plates having an opening therein of preselected size; a lock cylinder having a cylinder plug rotatably mounted therein, at least one longitudinal row of tumbler pin bores extending radially through said cylinder and said plug, and tumbler pins in said bores, said cylinder being disposed entirely between said escutcheon plates with one end of said plug aligned with said opening to receive a key therethrough, and being fixedly mounted on one of said plates; positioning means between said escutcheon plates connected thereto to hold said platEs in a preselected spaced relation and oppositely operable to positively move said plates alternately closer together and farther apart; and means accessible only from the side of said lock that extends along the edge of the door when the lock is mounted in the notch, for operating said positioning means to move said escutcheon plates into and out of clamping engagement with the opposite faces of the door.
Claim 18
Dependent Claim
199 words
A high-security door lock mountable in a notched edge of a door, and comprising: a pair of escutcheon plates disposed in spaced apart relation and having adjacent faces for engaging opposite faces of the door around the notch therein, at east one of said escutcheon plates having an opening therein of preselected size; a lock cylinder having a cylinder plug rotatably mounted therein, at least one longitudinal row of tumbler pin bores extending radially through said cylinder and said plug, and tumbler pins in said bores, said cylinder being disposed entirely between said escutcheon plates with one end of said plug aligned with said opening to receive a key therethrough, and being fixedly mounted on one of said plates; positioning means between said escutcheon plates connected thereto to hold said platEs in a preselected spaced relation and oppositely operable to positively move said plates alternately closer together and farther apart; and means accessible only from the side of said lock that extends along the edge of the door when the lock is mounted in the notch, for operating said positioning means to move said escutcheon plates into and out of clamping engagement with the opposite faces of the door.
Claim 19
Dependent Claim
52 words
A high-security door lock as defined in claim 25 in which said cylinder is fastened to the inner side of one of said escutcheon plates for movement therewith toward and away from the other escutcheon plate, and is spaced from said other plate prior to clamping of the plates against the door.
Claim 20
Dependent Claim
56 words
A high-security door lock as defined in claim 14 in which said cylinder plug has a coaxial end section secured to said one end of said plug and extending rotatably through said opening, said end section having an inner end portion larger than said opening positioned inside and other escutcheon plate to abut against the latter.
Claim 21
Dependent Claim
43 words
A high-security door lock as defined in claim 15 in which said end section is secured to said cylinder plug by means of pins parallel to the axis of said cylinder plug and extending into both said plug and said inner end portion.
Claim 22
Dependent Claim
77 words
A high-security door lock as defined in claim 13 in which said escutcheon plates are formed with aligned openings and said cylinder is mounted between said plates with one end of said plug adjacent each of said openings, and further including a separable end section secured to each end of said plug and extending rotatably into the adjacent opening, at least one of said end sections having a hole therethrough for admitting a key into said plug.
Claim 23
Dependent Claim
45 words
A high-security door lock as defined in claim 17 in which each of said end sections has an enlarged inner end portion larger than the adjacent escutcheon plate hole and disposed inside the escutcheon plate to block removal of the end section through the hole.
Claim 24
Dependent Claim
33 words
A high-security door lock as defined in claim 18 in which said end sections are secured to the ends of said plug by means of pins parallel to the axis of the plug.
Claim 25
Dependent Claim
163 words
A high-security door lock mountable in a notched edge of a door, and comprising: a pair of spaced, side-by-side escutcheon plates having adjacent faces for engaging opposite faces of the door around the notch therein, said escutcheon plates being imperforate except for a pair of aligned openings through the plates; a lock cylinder disposed entirely between said plates and having a cylinder plug rotatably mounted therein, the ends of said plug being aligned with said openings and said cylinder being fixedly mounted on one of said escutcheon plates; means lying entirely between said plates holding the latter together in a unit and selectively operable to draw the plates together and to move them farther apart; and means accessible only from the side of said lock that extends along the edge of the door when the lock is mounted in the notch, for operating said holding means to move the plates into and out of clamping engagement with the opposite faces of the door.
Claim 26
Dependent Claim
163 words
A high-security door lock mountable in a notched edge of a door, and comprising: a pair of spaced, side-by-side escutcheon plates having adjacent faces for engaging opposite faces of the door around the notch therein, said escutcheon plates being imperforate except for a pair of aligned openings through the plates; a lock cylinder disposed entirely between said plates and having a cylinder plug rotatably mounted therein, the ends of said plug being aligned with said openings and said cylinder being fixedly mounted on one of said escutcheon plates; means lying entirely between said plates holding the latter together in a unit and selectively operable to draw the plates together and to move them farther apart; and means accessible only from the side of said lock that extends along the edge of the door when the lock is mounted in the notch, for operating said holding means to move the plates into and out of clamping engagement with the opposite faces of the door.
Claim 27
Dependent Claim
52 words
A high-security door lock as defined in claim 20 further including a pair of detachable end sections coaxially mounted on the opposite ends of said cylinder plug and extending rotatably into said openings, at least one of said end sections having a passage therethrough for admitting a key into said cylinder plug.
Claim 28
Dependent Claim
36 words
A high-security door lock as defined in claim 20 in which the last-mentioned means include at least one screw actuator having a head adjacent said side of said lock and extending inwardly to said holding means.
Claim 29
Dependent Claim
37 words
A high-security door lock as defined in claim 22 in which said holding means are located approximately midway between said side and the opposite side of the lock, to clamp said escutcheon plates centrally against a 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) | 1975-11-14 | 1976-05-15 | 1976-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-14 | 1980-05-15 | 1980-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-14 | 1984-05-15 | 1984-11-14 | $7700.00 | Window Closed / Lapsed |