Patent US4326252A successfully refreshed from Google Patents.
US4901545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-contained electromechanical locking device
Assignee: RISING STAR TECHNOLOGIES A PARTNERSHIP
•
Filing: 1987-12-28
•
Granted: 1990-02-20
•
Expires: 2007-12-28
Abstract
Abstract An electromechanical locking device completely contained within a doorknob which can be a part of a usual lockset or retrofitted on an existing lockset which requires entry of an access code or entry of both an access code and use of a mechanical key for operating the lock. The code is entered on a keypad exposed on the knob and supplies a signal to a computer powered by batteries. A correct match of the input code to a code stored in the computer will actuate a motor operated cam to release a mechanical interlocking pin enabling the lock cylinder to be rotated to the unlocked position. Both visual and audible signals may be provided in the doorknob as to the power level of the batteries and ready condition of the lock. The mechanical interlock pin is disengaged automatically from the lock cylinder upon the power level of the batteries dropping to a predetermined level requiring only mechanical key operation of the lock.
Inventors
- 👤 Michael E. Bacon
- 👤 Scott W. Morneweck
- 👤 Roger C. Keith
- 👤 Arvin B. Simon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:20
CPC Classifications
E; E05; E05B; E05B47/00; E05B47/06; E05B47/0611; E05B47/0619; E05B47/0626; E05B47/063; E05B13/00; E05B13/10; E05B47/0638; E05B47/0646; E05B47/0653; G; G07; G07C; G07C9/00; G07C9/00174; G07C9/00658; G07C9/00674; G07C9/0069; E05B47/0001; E05B2047/0014; E05B2047/0018; E05B2047/0024; E05B2047/0091; E05B2047/0097; E05B47/0012; Y; Y10; Y10T; Y10T70/00; Y10T70/50; Y10T70/5611; Y10T70/5757; Y10T70/5765; Y10T70/577; Y10T70/5783; Y10T70/5788; Y10T70/5792; Y10T70/70; Y10T70/7051; Y10T70/7062; Y10T70/7068; Y10T70/7073; Y10T70/7079; Y10T70/7147
Claims Analysis
Total Claims: 40
Claim 1
Independent Claim
99 words
An electromechanical locking device completely contained within a doorknob of the type adapted to be fitted on an input shaft of a key actuated lockset, said device including (a) a self-contained power source; (b) key actuated mechanical locking means for rotating a locking cylinder from locked to unlocked position; (c) first means for generating a first signal in response to an entered code; (d) second means for generating a second signal in response to the first signal and (e) interlocking means operable in response to the second signal for permitting unlocking of the mechanical locking means by a key.
Claim 2
Dependent Claim
99 words
An electromechanical locking device completely contained within a doorknob of the type adapted to be fitted on an input shaft of a key actuated lockset, said device including (a) a self-contained power source; (b) key actuated mechanical locking means for rotating a locking cylinder from locked to unlocked position; (c) first means for generating a first signal in response to an entered code; (d) second means for generating a second signal in response to the first signal and (e) interlocking means operable in response to the second signal for permitting unlocking of the mechanical locking means by a key.
Claim 3
Dependent Claim
15 words
The locking device defined in claim 1 in which the power source is a battery.
Claim 4
Dependent Claim
34 words
The locking device defined in claim 2 in which audible signal means is operatively connected to the battery for generating an alarm upon the power output of the battery dropping to a predetermined level.
Claim 5
Dependent Claim
29 words
The locking device defined in claim 3 in which the audible signal means generates a ready indication signal upon insertion of a correct key into the mechanical locking means.
Claim 6
Dependent Claim
20 words
The locking device defined in claim 1 in which the first means is a keypad containing a plurality of switches.
Claim 7
Dependent Claim
35 words
The locking device defined in claim 1 in which visual signal means is provided on the doorknob for providing a visual signal upon the power level of the power source dropping to a predetermined level.
Claim 8
Dependent Claim
47 words
The locking device defined in claim 1 in which the interlock means includes a locking pin engageable with the cylinder to prevent rotation thereof, and a motor actuated cam operatively connected to said locking pin by a linkage assembly for disengaging said locking pin from said cylinder.
Claim 9
Dependent Claim
24 words
The locking device defined in claim 7 in which the locking pin is biased by the linkage assembly into locking engagement with the cylinder.
Claim 10
Dependent Claim
35 words
The locking device defined in claim 8 in which the motor actuated cam engages the linkage assembly to maintain the locking pin in locking engagement until the second signal is received by the interlock means.
Claim 11
Dependent Claim
89 words
The locking device defined in claim 9 in which a key actuated pin is engageable with the linkage assembly to overcome the bias of the linkage assembly and move the locking pin toward disengagement from the cylinder; and in which the cam is rotated by the motor out of engagement with the linkage assembly upon receiving said second signal whereby the linkage assembly can move the locking pin out of locking engagement with said cylinder upon engagement of said key actuated pin by a key inserted into the cylinder.
Claim 12
Dependent Claim
53 words
The locking device defined in claim 7 in which the linkage assembly includes a pivotally mounted spring biased pin detent arm and a pivotally mounted lever arm operatively connected thereto, said lever arm being connected at one end to the locking pin and engageable at an opposite end by the motor actuated cam.
Claim 13
Dependent Claim
59 words
The locking device defined in claim 11 in which at least one of a pluralilty of tumbler pins is engageable with the pin detent arm for pivoting said arm to a raised position upon engagement of said one tumbler pin by a key to move the locking pin to an unlocked position by its connection with the lever arm.
Claim 14
Dependent Claim
49 words
The locking device defined in claim 7 in which the motor operated cam is disengaged from the linkage assembly when the power level of the self-contained power source drops to a predetermined level permitting rotation of the locking cylinder without the second signal being generated by the second means.
Claim 15
Dependent Claim
45 words
The locking device defined in claim 1 in which the second means is a computer; and in which a code is stored in said computer and is compared against the first signal generated by the first means to determine if a valid code was entered.
Claim 16
Dependent Claim
44 words
The locking device defined in claim 1 in which the interlock lock means includes a locking pin engageable with the cylinder to prevent rotation thereof and a motor operated cam operatively engageable with said locking pin for disengaging said locking pin from said cylinder.
Claim 17
Dependent Claim
27 words
The locking device defined in claim 1 including switch means for generating a third signal in response to insertion of the key into the mechanical locking means.
Claim 18
Dependent Claim
37 words
The locking device defined in claim 16 in which the interlock means further includes slide means adapted to be actuated by the key, said slide means engageable with a slideably movable pin for actuating the switch means.
Claim 19
Dependent Claim
45 words
The locking device defined in claim 17 including a lever actuated by the slide means, said lever being engageable with a lock pin to move said lock pin out of locking engagement with the mechanical locking means upon the interlock means receiving the second signal.
Claim 20
Dependent Claim
43 words
The locking device defined in claim 16 in which the second means is a computer; and in which the third signal generated by the switch means is supplied to the computer indicating that a key has been inserted into the mechanical locking means.
Claim 21
Dependent Claim
161 words
An improved door lockset of the type having an inside knob and an outside knob connected by a lock body mounted through the door, said lock body having a locking bolt and a rotating member for unlocking said lock bolt, said improved lockset including: (a) a self-contained power source mounted within the outside knob; (b) a key actuated cylinder mounted within said outside knob connected to the rotating member for unlocking said lock bolt upon turning the cylinder with a key; (c) code generating means mounted on the outside knob for generating a coded signal in response to manual operation of said code generating means; (d) memory means mounted within the outside knob and connected to the power source for generating a control signal in response to receiving a valid coded signal from the code generating means; and (e) interlock means operable in response to the control signal permitting turning of the cylinder by the key to unlock the lock bolt.
Claim 22
Dependent Claim
161 words
An improved door lockset of the type having an inside knob and an outside knob connected by a lock body mounted through the door, said lock body having a locking bolt and a rotating member for unlocking said lock bolt, said improved lockset including: (a) a self-contained power source mounted within the outside knob; (b) a key actuated cylinder mounted within said outside knob connected to the rotating member for unlocking said lock bolt upon turning the cylinder with a key; (c) code generating means mounted on the outside knob for generating a coded signal in response to manual operation of said code generating means; (d) memory means mounted within the outside knob and connected to the power source for generating a control signal in response to receiving a valid coded signal from the code generating means; and (e) interlock means operable in response to the control signal permitting turning of the cylinder by the key to unlock the lock bolt.
Claim 23
Dependent Claim
49 words
The improved door lock set defined in claim 20 in which the interlock means includes a locking pin engageable with the cylinder to prevent rotation thereof, and a motor actuated cam operatively connected to said locking pin by a linkage assembly for disengaging said locking pin from said cylinder.
Claim 24
Dependent Claim
26 words
The improved door lock set defined in claim 21 in which the locking pin is biased by the linkage assembly into locking engagement with the cylinder.
Claim 25
Dependent Claim
37 words
The improved door lock set defined in claim 22 in which the motor actuated cam engages the linkage assembly to maintain the locking pin in locking engagement until the second signal is received by the interlock means.
Claim 26
Dependent Claim
87 words
The improved door lock set defined in claim 23 in which a key actuated pin is engageable with the linkage assembly to overcome the bias of said linkage assembly and move the locking pin toward disengagement from the cylinder; and in which the cam is rotated by the motor out of engagement with the linkage assembly upon receiving said second signal whereby the linkage assembly can move the locking pin out of locking engagement with said cylinder upon engagement of said key actuated pin by a key.
Claim 27
Dependent Claim
103 words
An electromechanical locking device completely contained within a doorknob of the type adapted to be fitted on an input shaft of a key actuated lockset, said device including (a) a computer; (b) a motor controlled by said computer; (c) battery means for supplying power to the computer and motor; (d) a keypad connected to the computer for entering a code in the computer; (e) a key actuated mechanically operated lock cylinder; and (f) interlock means between the motor and lock cylinder for permitting operation of the mechanically operated lock cylinder by the key upon the computer receiving a proper code from the keypad.
Claim 28
Dependent Claim
103 words
An electromechanical locking device completely contained within a doorknob of the type adapted to be fitted on an input shaft of a key actuated lockset, said device including (a) a computer; (b) a motor controlled by said computer; (c) battery means for supplying power to the computer and motor; (d) a keypad connected to the computer for entering a code in the computer; (e) a key actuated mechanically operated lock cylinder; and (f) interlock means between the motor and lock cylinder for permitting operation of the mechanically operated lock cylinder by the key upon the computer receiving a proper code from the keypad.
Claim 29
Dependent Claim
47 words
The locking device defined in claim 25 in which the interlock means includes a locking pin engageable with the cylinder to prevent rotation thereof, and a motor actuated cam operatively connected to said locking pin by a linkage assembly for disengaging said locking pin from said cylinder.
Claim 30
Dependent Claim
39 words
The locking device defined in claim 26 in which the motor actuated cam engages the linkage assembly to maintain the locking pin in locking engagement with the lock cylinder until the second signal is received by the interlock means.
Claim 31
Dependent Claim
91 words
The locking device defined in claim 27 in which a key actuated pin is engageable with the linkage assembly to overcome the bias of the linkage assembly and move the locking pin toward disengagement from the cylinder; and in which the cam is rotated by the motor out of engagement with the linkage assembly upon receiving said second signal whereby the linkage assembly can move the locking pin out of locking engagement with said cylinder upon engagement of said key actuated pin by a key manually inserted into the lock cylinder.
Claim 32
Dependent Claim
138 words
A locking device completely contained within a doorknob of the type adapted to be fitted on an input shaft of a mechanically actuated lockset having a locking cylinder, said device including: (a) a self-contained power source; (b) a mechanical actuated turnkey slideably rotably mounted within the locking cylinder for rotating the locking cylinder from locked to unlocked position; (c) first means for generating a first signal in response to an entered code; (d) second means for generating a second signal in response to the first signal; (e) interlock means operable in response to the second signal for permitting manual movement of the mechanical actuated turnkey for rotating the cylinder to the unlocked position; and (f) switch means actuated upon inward movement of the turnkey for generating a third signal enabling the generation of the first and second signals.
Claim 33
Dependent Claim
138 words
A locking device completely contained within a doorknob of the type adapted to be fitted on an input shaft of a mechanically actuated lockset having a locking cylinder, said device including: (a) a self-contained power source; (b) a mechanical actuated turnkey slideably rotably mounted within the locking cylinder for rotating the locking cylinder from locked to unlocked position; (c) first means for generating a first signal in response to an entered code; (d) second means for generating a second signal in response to the first signal; (e) interlock means operable in response to the second signal for permitting manual movement of the mechanical actuated turnkey for rotating the cylinder to the unlocked position; and (f) switch means actuated upon inward movement of the turnkey for generating a third signal enabling the generation of the first and second signals.
Claim 34
Dependent Claim
59 words
The locking device defined in claim 29 in which the turnkey is spring biased to an outward position; in which inward movement of said turnkey moves a locking pin to an unlocked position; and in which the turnkey is retained within the locking cylinder by a limit pin engaged within a slot formed in a shank of said turnkey.
Claim 35
Dependent Claim
98 words
An electronically operated locking device completely contained within a doorknob of the type adapted to be fitted on an input shaft of a lockset, said device including (a) a computer; (b) a motor controlled by said computer; (c) battery means for supplying power to the computer and motor; (d) a keypad connected to the computer for entering a code in the computer; (e) a mechanically operated lock cylinder; and (f) interlock means between the motor and lock cylinder for permitting manual operation of the mechanically operated lock cylinder upon the computer receiving a proper code from the keypad.
Claim 36
Dependent Claim
98 words
An electronically operated locking device completely contained within a doorknob of the type adapted to be fitted on an input shaft of a lockset, said device including (a) a computer; (b) a motor controlled by said computer; (c) battery means for supplying power to the computer and motor; (d) a keypad connected to the computer for entering a code in the computer; (e) a mechanically operated lock cylinder; and (f) interlock means between the motor and lock cylinder for permitting manual operation of the mechanically operated lock cylinder upon the computer receiving a proper code from the keypad.
Claim 37
Dependent Claim
47 words
The locking device defined in claim 31 in which the interlock means includes a locking pin engageable with the cylinder to prevent rotation thereof, and a motor actuated cam operatively connected to said locking pin by a linkage assembly for disengaging said locking pin from said cylinder.
Claim 38
Dependent Claim
38 words
The locking device defined in claim 32 which the motor actuated cam engages the linkage assembly to maintain the locking pin in locking engagement with the lock cylinder until the second signal is received by the interlock means.
Claim 39
Dependent Claim
104 words
A electronically operated locking device completely contained within a doorknob of the type adapted to be fitted on an input shaft of a lockset, said device including: (a) electronic logic means; (b) a motor controlled by said electronic logic means; (c) a self contained power source; (d) code entry means for entering a code into said electronic logic means; (e) mechanical means for manually operating the input shaft of a lockset; and (f) interlock means cooperating with the motor and mechanical means for permitting manual operation of the mechanical means upon the electronic logic means receiving a proper code from the code entry means.
Claim 40
Dependent Claim
104 words
A electronically operated locking device completely contained within a doorknob of the type adapted to be fitted on an input shaft of a lockset, said device including: (a) electronic logic means; (b) a motor controlled by said electronic logic means; (c) a self contained power source; (d) code entry means for entering a code into said electronic logic means; (e) mechanical means for manually operating the input shaft of a lockset; and (f) interlock means cooperating with the motor and mechanical means for permitting manual operation of the mechanical means upon the electronic logic means receiving a proper code from the code entry means.
References Cited (Backward Citations)
US3123995A
Cited
US1238134A
Cited
US1270372A
Cited
US1530861A
Cited
US1695518A
Cited
US2059678A
Cited
US2449711A
Cited
US2700886A
Cited
US3395557A
Cited
US3447347A
Cited
US3529454A
Cited
US3494157A
Cited
US3616667A
Cited
US3670538A
Cited
US3787812A
Cited
US3764859A
Cited
US3894417A
Cited
US4027508A
Cited
US4148092A
Cited
US4770012A
Cited
US4393672A
Cited
US4308732A
Cited
US4452059A
Cited
US4748833A
Cited
US4458512A
Cited
US4637237A
Cited
US4745784A
Cited
US4656851A
Cited
US4799371A
Cited
US4763937A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-02-19 | 1993-08-21 | 1994-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-19 | 1997-08-21 | 1998-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-19 | 2001-08-21 | 2002-02-20 | $7700.00 | Window Closed / Lapsed |