US3901057A - Padlock - Google Patents

Padlock Download PDF

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Publication number
US3901057A
US3901057A US46588874A US3901057A US 3901057 A US3901057 A US 3901057A US 46588874 A US46588874 A US 46588874A US 3901057 A US3901057 A US 3901057A
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US
United States
Prior art keywords
solenoid
detent
lock
padlock
voltage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
Inventor
Sr Clifford L Coley
Original Assignee
Sr Clifford L Coley
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sr Clifford L Coley filed Critical Sr Clifford L Coley
Priority to US46588874 priority Critical patent/US3901057A/en
Application granted granted Critical
Publication of US3901057A publication Critical patent/US3901057A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00Operating or controlling locks or other fastening devices by electric or magnetic means
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B67/00Padlocks; Details thereof
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S70/00Locks
    • Y10S70/46Conducting key
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00Locks
    • Y10T70/40Portable
    • Y10T70/413Padlocks
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00Locks
    • Y10T70/70Operating mechanism
    • Y10T70/7051Using a powered device [e.g., motor]
    • Y10T70/7062Electrical type [e.g., solenoid]
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00Locks
    • Y10T70/70Operating mechanism
    • Y10T70/7051Using a powered device [e.g., motor]
    • Y10T70/7062Electrical type [e.g., solenoid]
    • Y10T70/7124Retracted electrically only

Abstract

An electromagnetic padlock including a detent normally holding a padlock shackle in a locking position, a solenoid connected to said detent for disengaging the detent from the shackle when the solenoid is energized, and an energizing unit having a plug which may be detachably connected to a jack, carried by the padlock case, and which is electrically connected to the solenoid, for energizing the solenoid when an electric current is supplied thereto from a current source to which the energizing unit is connected. The solenoid is capable of being energized for disengaging the detent only when a voltage of a particular value is supplied thereto. The energizing unit includes a transformer for changing the voltage received from the current source to a voltage corresponding to that required to energize the solenoid.

Description

United States Patent 1 1 1111 3,901,057 Coley, Sr. Aug. 26, 1975 PADLOCK Primary Examiner-Paul R. Gilliam Assistant ExaminerCarl F. Pietruszka 1 t Clff dL.Cl ,S.,Rt.2,B [76] nven or olgyhalia s 3 1 0x Attorney, Agent, or F1rmJohn N. Randolph [22] Filed: May 1, 1974 1211 Appl. No.: 465,888

[ 5 7 ABSTRACT An electromagnetic padlock including a detent normally holding a padlock shackle in a locking position, a solenoid connected to said detent for disengaging the detent from the shackle when the solenoid is energized, and an energizing unit having a plug which may be detachably connected to a jack, carried by the padlock case, and which is electrically connected to the solenoid, for energizing the solenoid when an electric current is supplied thereto from a current source to which the energizing unit is connected. The solenoid is capable of being energized for disengaging the detent only when a voltage of a particular value is supplied thereto. The energizing unit includes a transformer for changing the voltage received from the current source to a voltage corresponding to that required to energize the solenoid.

4 Claims, 3 Drawing Figures 1 PAnLocK BACKGROUND The prior art discloses the use of an electric plug for .SUMMARY It is a primary object of the present invention to provide an electrically actuated padlock which is especially adapted for use on freight cars and large freight carrying trailers and which utilizes an unlocking device for supplying an electric current to a solenoid of the padlock to effect release of a detent, and wherein the voltage of the current supplied to the solenoid differs from the voltage received from the current source, so that the solenoid cannot be energized to release the detent unless a prescribed voltage is applied thereto, so that unlocking of the padlock can only be accomplished with a particular unlocking device or energizer capable of stepping the voltage either up or down to a certain predetermined value.

Another object of the invention is to provide an energizer or unlocking device utilizing a transformer for changing the voltage from that supplied to the transformer to that transmitted therefrom.

Various other objects and advantages of the invention will hereinafter become more fully apparent from the following description of the drawing, illustrating a presently preferred embodiment thereof, and wherein:

BRIEF DESCRIPTION OF THE DRAWING FIG. 1 is a perspective view showing the padlock in a locked position;

FIG. 2 is a perspective view showing the padlock in an unlocked position and with the unlocking device or energizer connected thereto, and

FIG. 3 is a fragmentary plan view of the energizer or unlocking device.

DESCRIPTION OF THE PREFERRED EMBODIMENT Referring more specifically to the drawing, a padlock designated generally 5, of the electromagnetic type, is illustrated in FIGS. 1 and 2 and includes a case 6 having an end wall 7 provided with spaced openings 8 to slid ably receive the substantially parallel. legs 9 and 10 of a shackle Il. Sleeves l2 and 13 are secured to the inner side of the wall 7 and are disposed within the hollow interior of the case 6 in registration with the openings 8 to slidably guide and reinforce the shackel legs 9 and 10 respectively. The sleeve 12 which guides the longer leg 9 is longer than the sleeve 13; and said longer leg has an enlargement or flange 14 at its inner end to engage the inner end of the sleeve 12 to limit the extent that the shackle 11 can be moved to its projected, unlocked position of FIG. 2, under the biasing action of a compression spring 15 which is disposed against the inner side of the casing wall, located opposite the wall 7, and the adjacent side of the enlargement 14.

The shorter leg 10 which is out of engagement with the case 6 in the openposition of the padlock 5, as seen in FIG. 2, can be swung away from the case 6 about the leg as an axis, for engaging the shackle 11 with a hasp staple or chain links, not shown, as is conventional, or for disengaging the shackle therefrom. The shackle leg 10 has a notch 16 which faces away from the shackle leg 9 and which has an outwardly facing shoulder .17. A detent 18, in the form of a hook, is pivotally mounted within the case 6 by a pivot pin 19 which is supported by the case and which engages through an'intermediate portion of the shank of the hook. The hook 18 has a bill 20 to engage the notch 16 and abut the shoulder-17, when the shackle 1-1 is in its locked position of FIG.-1. -A .lightcompression spring 21 .which bears against a part of the interior of the case 6 and against the detent 18, opposite to the bill 20, urges the bill- 20 into engagement with the notch 16 .for lockingthe shackle leg 10 in the case 6. i

A solenoid 22 is secured in the case 6 and has anarmature 23 which is pivotally connected .to the detent 18, near the end thereof disposed remote'from the bill 20 and on the opposite side of the pivot 19 to said bill 20. The spring 21 normally holds the armature 23 in its extended position of FIG. 1 when the solenoid 22 is deenergized. In this position, the detent 18 abuts the stop 24 which limits the extent that said detent can be rocked on its pivot 19 under the biasing action of the spring 21.

A jack 25 is mounted in one wall of the case 6 and has three conductor sleeves 26 supported thereby and opening through said wall. Two of the sleeves 26 are connected by electrical conductors 27 to the solenoid 22 and the other sleeve 26 is grounded to the case 6 by a conductor 28.

An unlocking device or energizing unit, designated generally 29, includes a hollow handle 30 containing a transformer 31, which is connected at one end by a three conductor cable 32 to a three prong plug 33; and at its other end by a three conductor cable 34 to a three prong plug 35. A pushbutton switch 36 is also mounted in the handle 30 and is normally disposed in a circuit breaking position.

The transformer 31 is capable of changing the voltage of the electric current passing therethrough to a certain predetermined voltage which is the only voltage which will energize the solenoid 22. The plug 33 is adapted to be connected to a conventional electrical outlet, such as 1 10 volt outlet, or to a conventional bat tery pack, not shown. The plug 35 is connected to the jack 25. One prong of the plug 35 is only capable of engaging the sleeve 26 of the ground conductor 28. Thereafter, when the pushbutton switch 36 is depressed to close the circuit, voltage of a proper value will be supplied through the unit 29 to the solenoid 22 for energizing the solenoid to move the armature 23 thereof inwardly from its position of FIG. 1 to its position of FIG. 2, for rocking the detent 18 to its position of FIG. 2, for disengaging the bill 20 from the notch 16, so that the spring 15 can project the shackle leg 10 from the case 6 and into the unlocked position of the padlock 5, as seen in FIG. 2. Thereafter, and with the unit 29 disconnected from the padlock 5, said padlock can be returned to a locked position in a conventional manner.

While the lock has been illustrated and described as a padlock, it will be readily understood that the invention could be embodied in other types of locks and with the unit 29 being utilized for supplying electric current of a particular voltage to a solenoid to effect movement of a detent or its equivalent of the lock to accomplish the unlocking action.

Various other modifications and changes are contemplated and may be resorted to, without departing from the function or scope of the invention.

I claim as my invention:

1. A lock including a part movable between a locked an an unlocked position, a detent engaging and normally retaining said part in a locked position, a solenoid connected to said detent for moving the detent out of engagement with said part when the solenoid is energized, said solenoid being capable of being energized only by a voltage of a particular value, an electrical conductor connecting said solenoid to an electric current source, means interposed in said conductor for changing the voltage of the current to the particular voltage capable of energizing the solenoid, said conductor having connector means at each end constituting parts of an unlocking device which is normally detached from the lock, and said lock having means electrically connected to the solenoid to receive one of said connector means, said other connector means being adapted to be removably connected to the current Source.

2. A lock as in claim 1, said means comprising a transformer.

3. A lock as in claim 1, and a manually actuated normally open switch interposed in said conductor and adapted to be manually actuated for completing the circuit from the current source to the solenoid.

4. A lock as in claim 1, said lock comprising a padlock, said part comprising a slidably mounted shackle having one leg provided with a notch, said detent comprising a hook having a bill for engaging said notch, means pivotally mounting the hook in the padlock, and said solenoid having a slidably mounted armature connected to the hook for swinging the bill thereof out of engagement with said notch when the solenoid is energized to retract the armature.

Claims (4)

1. A lock including a part movable between a locked an an unlocked position, a detent engaging and normally retaining said part in a locked position, a solenoid connected to said detent for moving the detent out of engagement with said part when the solenoid is energized, said solenoid being capable of being energized only by a voltage of a particular value, an electrical conductor connecting said solenoid to an electric current source, means interposed in said conductor for changing the voltage of the current to the particular voltage capable of energizing the solenoid, said conductor having connector means at each end constituting parts of an unlocking device which is normally detached from the lock, and said lock having means electrically connected to the solenoid to receive one of said connector means, said other connector means being adapted to be removably connected to the current source.
2. A lock as in claim 1, said means comprising a transformer.
3. A lock as in claim 1, and a manually actuated normally open switch interposed in said conductor and adapted to be manually actuated for completing the circuit from the current source to the solenoid.
4. A lock as in claim 1, said lock comprising a padlock, said part comprising a slidably mounted shackle having one leg provided with a notch, said detent comprising a hook having a bill for engaging said notch, means pivotally mounting the hook in the padlock, and said solenoid having a slidably mounted armature connected to the hook for swinging the bill thereof out of engagement with said notch when the solenoid is energized to retract the armature.
US46588874 1974-05-01 1974-05-01 Padlock Expired - Lifetime US3901057A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US46588874 US3901057A (en) 1974-05-01 1974-05-01 Padlock

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US46588874 US3901057A (en) 1974-05-01 1974-05-01 Padlock

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Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3974669A (en) * 1975-08-25 1976-08-17 American Locker Company, Inc. Lock
FR2402754A1 (en) * 1977-09-12 1979-04-06 Huwil Werke Gmbh Combination lock with electronic pushbutton actuator - ensures by solenoid and timing system code independent lock operating periods
US4698630A (en) * 1985-06-12 1987-10-06 American Locker Group Incorporated Security system
WO1990015910A1 (en) * 1989-06-21 1990-12-27 Ian Robert Symons Electronic lock
US5791172A (en) * 1996-09-20 1998-08-11 Multacc Corporation Electronically controlled security container for retaining door key
US5868013A (en) * 1993-06-01 1999-02-09 Nitinol Technologies, Inc. High security lock
US6046558A (en) * 1996-01-12 2000-04-04 Slc Technologies, Inc. Electronic padlock
US6047575A (en) * 1995-05-19 2000-04-11 Slc Technologies, Inc. Electronic padlock
US20040255623A1 (en) * 2003-06-19 2004-12-23 Conrad Sun Biometric padlock
US20050206499A1 (en) * 2004-03-19 2005-09-22 Fisher Scott R Electronic lock box with multiple modes and security states
US7076976B1 (en) * 2005-04-11 2006-07-18 Ilan Goldman Inertial blocking mechanism
US7086258B2 (en) 2004-03-19 2006-08-08 Sentrilock, Inc. Electronic lock box with single linear actuator operating two different latching mechanisms
US20110016931A1 (en) * 2007-10-19 2011-01-27 Mcdaid Cornelius Digital output lock
WO2012009607A1 (en) * 2010-07-15 2012-01-19 Master Lock Company Llc Padlock
US20140150502A1 (en) * 2012-12-03 2014-06-05 13876 Yukon Inc. Wireless portable lock system
US8806907B2 (en) 2011-11-11 2014-08-19 Master Lock Company Llc Battery access and power supply arrangements
US8850858B2 (en) 2012-12-06 2014-10-07 Master Lock Company Llc Lock subassembly
USD720204S1 (en) 2012-04-12 2014-12-30 Master Lock Company Llc Lock
US20150013398A1 (en) * 2013-07-12 2015-01-15 Invue Security Products Inc. Merchandise security devices for use with an electronic key
JP2016003505A (en) * 2014-06-18 2016-01-12 タキゲン製造株式会社 Electrical padlock
US9922479B2 (en) * 2015-10-19 2018-03-20 Jianfeng Jiang Task enabled switch system
US10774567B2 (en) * 2018-05-11 2020-09-15 ABUS August Bremicker Söhne KG Hoop lock
USD900589S1 (en) 2019-08-07 2020-11-03 Sentrilock, Llc Electronic lock box

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US656672A (en) * 1899-09-30 1900-08-28 Frank A Sprenger Animal-releasing device.
US715334A (en) * 1901-06-07 1902-12-09 George H Price Electric safe-lock.
US1498164A (en) * 1922-12-08 1924-06-17 Gonzalez Castulo Keyless padlock
US1501228A (en) * 1922-07-18 1924-07-15 William J Martin Car-door-locking device
US1684980A (en) * 1927-04-04 1928-09-18 Harry J Green Car-door lock
US1772604A (en) * 1925-02-21 1930-08-12 Herz Alfred Electric door release

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US656672A (en) * 1899-09-30 1900-08-28 Frank A Sprenger Animal-releasing device.
US715334A (en) * 1901-06-07 1902-12-09 George H Price Electric safe-lock.
US1501228A (en) * 1922-07-18 1924-07-15 William J Martin Car-door-locking device
US1498164A (en) * 1922-12-08 1924-06-17 Gonzalez Castulo Keyless padlock
US1772604A (en) * 1925-02-21 1930-08-12 Herz Alfred Electric door release
US1684980A (en) * 1927-04-04 1928-09-18 Harry J Green Car-door lock

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3974669A (en) * 1975-08-25 1976-08-17 American Locker Company, Inc. Lock
FR2402754A1 (en) * 1977-09-12 1979-04-06 Huwil Werke Gmbh Combination lock with electronic pushbutton actuator - ensures by solenoid and timing system code independent lock operating periods
US4698630A (en) * 1985-06-12 1987-10-06 American Locker Group Incorporated Security system
WO1990015910A1 (en) * 1989-06-21 1990-12-27 Ian Robert Symons Electronic lock
US5868013A (en) * 1993-06-01 1999-02-09 Nitinol Technologies, Inc. High security lock
US6047575A (en) * 1995-05-19 2000-04-11 Slc Technologies, Inc. Electronic padlock
US6046558A (en) * 1996-01-12 2000-04-04 Slc Technologies, Inc. Electronic padlock
US5791172A (en) * 1996-09-20 1998-08-11 Multacc Corporation Electronically controlled security container for retaining door key
US20040255623A1 (en) * 2003-06-19 2004-12-23 Conrad Sun Biometric padlock
US20050206499A1 (en) * 2004-03-19 2005-09-22 Fisher Scott R Electronic lock box with multiple modes and security states
US7086258B2 (en) 2004-03-19 2006-08-08 Sentrilock, Inc. Electronic lock box with single linear actuator operating two different latching mechanisms
US7420456B2 (en) 2004-03-19 2008-09-02 Sentri Lock, Inc. Electronic lock box with multiple modes and security states
US7076976B1 (en) * 2005-04-11 2006-07-18 Ilan Goldman Inertial blocking mechanism
US20110016931A1 (en) * 2007-10-19 2011-01-27 Mcdaid Cornelius Digital output lock
US9121196B2 (en) * 2007-10-19 2015-09-01 Robert D. Zuraski Digital output lock
WO2012009607A1 (en) * 2010-07-15 2012-01-19 Master Lock Company Llc Padlock
US8453481B2 (en) 2010-07-15 2013-06-04 Master Lock Company Llc Padlock
US8806907B2 (en) 2011-11-11 2014-08-19 Master Lock Company Llc Battery access and power supply arrangements
USD720204S1 (en) 2012-04-12 2014-12-30 Master Lock Company Llc Lock
US9679429B2 (en) * 2012-12-03 2017-06-13 13876 Yukon Inc. Wireless portable lock system
US20140150502A1 (en) * 2012-12-03 2014-06-05 13876 Yukon Inc. Wireless portable lock system
US8850858B2 (en) 2012-12-06 2014-10-07 Master Lock Company Llc Lock subassembly
US9428938B2 (en) 2013-07-12 2016-08-30 Invue Security Products Inc. Merchandise security devices for use with an electronic key
US10533344B2 (en) 2013-07-12 2020-01-14 Invue Security Products Inc. Merchandise security devices for use with an electronic key
US9133649B2 (en) * 2013-07-12 2015-09-15 Invue Security Products Inc. Merchandise security devices for use with an electronic key
US20150013398A1 (en) * 2013-07-12 2015-01-15 Invue Security Products Inc. Merchandise security devices for use with an electronic key
US9951545B2 (en) 2013-07-12 2018-04-24 Invue Security Products Inc. Merchandise security devices for use with an electronic key
JP2016003505A (en) * 2014-06-18 2016-01-12 タキゲン製造株式会社 Electrical padlock
US9922479B2 (en) * 2015-10-19 2018-03-20 Jianfeng Jiang Task enabled switch system
US10774567B2 (en) * 2018-05-11 2020-09-15 ABUS August Bremicker Söhne KG Hoop lock
USD900589S1 (en) 2019-08-07 2020-11-03 Sentrilock, Llc Electronic lock box

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