US3811717A - Latch bolt stop lever for fire door lock sets - Google Patents
Latch bolt stop lever for fire door lock sets Download PDFInfo
- Publication number
- US3811717A US3811717A US33693273A US3811717A US 3811717 A US3811717 A US 3811717A US 33693273 A US33693273 A US 33693273A US 3811717 A US3811717 A US 3811717A
- Authority
- US
- United States
- Prior art keywords
- latch bolt
- lever
- lock set
- stop lever
- bolt head
- 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
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B65/00—Locks or fastenings for special use
- E05B65/10—Locks or fastenings for special use for panic or emergency doors
- E05B65/104—Locks or fastenings for special use for panic or emergency doors actuated in response to heat, e.g. with fusible element, bimetal, memory shape or swelling material
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S292/00—Closure fasteners
- Y10S292/66—Thermally controlled mechanism
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T292/00—Closure fasteners
- Y10T292/08—Bolts
- Y10T292/0908—Emergency operating means
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T292/00—Closure fasteners
- Y10T292/08—Bolts
- Y10T292/096—Sliding
- Y10T292/1014—Operating means
- Y10T292/1022—Rigid
- Y10T292/1031—Swinging catch
Definitions
- ABSTRACT This specification discloses a fire door lock set incorporating a latch bolt having a latch bolt stop lever which is normally maintained in an ineffective position by a fusible pin, but which drops into a position holding the head of the latch bolt in door closing position when the pin melts at a predetermined temperature caused by a fire condition.
- the present invention relates to the lock set incorporating a latch bolt and associated mechanism in a fire door and is concerned primarily with a latch bolt stop lever which is under the control of a fusible 6 Claims, 6 Drawing Figures :PATENTEDMAYZI I974 I v 3,811.71?
- fire doors are included in many structures and are provided for the purpose of maintaining an exit closed during a fire for the purpose of preventing the spread of the fire.
- Lock sets incorporating latch bolts are employed to maintain the fire doors in closed position and it is, of course, necessary to provide a mechanism to retract the latch bolt when the door is to be opened.
- One type of lock set incorporating a latch bolt for fire doors which is now meeting with widespread usage includes springs which bias the head of the latch bolt into the door closing position. They also include a horizontally disposed handle which is depressed and through mechanical connections retracts the bolt head from closing position.
- the present invention is founded on the concept of providing a lock set incorporating a latch bolt stop lever which is maintained inineffective position under normal conditions by a fusible pin, but which will drop into 6.
- an abutment pin which is secured to the housing below the latch bolt stop lever to limit its downward swinging movement.
- a latch bolt stop lever is pivotally mounted at one end to a wall of the housing which encases the latch bolt mechanism.
- the other end of this lever is formed with a notch and a tab extending therefrom on the upper side thereof.
- the notch receives the fusible pin which is secured to the housing wall and when this pin melts the lever drops until the tab engages the upper surface of the bolt head. In this position, the end portion of the lever below the notch engages the inner surface of the bolt head to securely hold it in door closing position.
- a latch bolt stop lever is pivotally mounted at one end of the housing wall and its other end is formed with a notch that receives the effective position maintaining the bolt head in door closing position when the pin melts.
- a lock set incorporating a latch bolt mechanism for a fire door which includes a latch bolt having a bolt head, spring means normally biasing the bolt head into door closing position and apivotally mounted handle which assumes an upraised horizontal position when the bolt head is in door closing position, with a latch bolt stop lever that is held in ineffective position by a fusible pin under normal conditions, but which falls into effective position engaging the bolt head to maintain the latter in door closing position when the pin melts.
- a latch bolt stop lever which falls into effective position solely by gravity action and which includes an abutment for limiting its falling movement to assure of its proper engagement with the bolt head.
- a latch bolt stop lever which is moved into effective position engaging the bolthead'by gravity action and as may be supplemented by a spring together with an abutment element for limiting such movement.
- a latch bolt stop lever which is pivotally mounted at one end on the housing which encases the lock set and which has a notch at the other end which receives the fusible pin which is also secured to the housing.
- a pivotally mounted latch bolt stop lever having a tab projecting from the notched end which functions as an abutment that engages the bolt head when the latch bolt stop lever falls into effective position.
- FIG. 1 is a vertical section through the housing for a fire door lock set incorporating a latch bolt mechanism with door closing position of the latch bolt being illustrated in full lines and a retracted position by broken lines;
- FIG. 2 is a detailed view depicting the latch bolt stop lever in effective position
- FIG. 3 is a detailed perspective illustrating the effective position of the latch bolt stop lever in full lines and the ineffective position in broken lines;
- FIG. 4 is a side view of a modifiedform of the fire door lock set and the latch bolt stop lever with the latter in ineffective position;
- FIG. 5 is a detailed view inside elevation of the latch bolt stop lever in effective position
- FIG. 6 is a detailed perspective of the latch bolt sto lever in effective position.
- afire door is represented at 9 and the outer plate 10 and the inner plate 14 of the lock set are formed with an opening at 11 through which a bolt head 12 extends when the fire door is closed. It will be understood that the bolt head 12 is received in a strike in the door jamb or frame to maintain the door closed.
- Lock bolt mechanism housing is represented generally at 13. It comprises an outer decorative plate and an inner plate 14 which is secured to the outer plate 10 in any preferred manner and from which tabs 15 are struck.
- the housing proper comprises an upper wall 16 secured to one of the tabs 15 by screws 17 and a lower wall 18 secured to the other tab 15 by a screw or pin (not illustrated which passes through openings 19.
- Housing 13 also includes a rear wall 20 remote from plate 14 and a pair of side walls, one of which is shown at 21.
- a latch bolt tail 22 has one end secured to bolt head 12 and its other end is formed with a tail-piece 23. It passes through a guide 24 secured to the wall structure.
- a light expansion coil spring 25 is coiled about latch bolt tail 22 and biases the bolt head 12 into door closing position.
- a handle 26 is drivably connected to shaft 27 rotatably supported in the wall structure 21. It projects from the surface of the fire door and is pivotally movable by hand and is supported in a bearing mounted on the surface of the fire door (not illustrated).
- the inner end of handle 26 is attached to a hub which is formed with an upstanding tongue 28 which engages a stop 29 secured to wall structure 21 to limit upward swinging movement of handle 26.
- the hub which engages the inner end of handle 26 is also formed with a downwardly extending tongue 30 which is engaged by a plunger 31 which is biased by an expansion coil spring 32 mounted on wall structure 21 to rotate the handle upwardly.
- a latch bolt actuating member 33 is swingably mounted on a pivot pin 34 mounted on wall structure 21. Member 33 has an upper end portion 35 which engages latch bolt tail-piece 23.
- springs 25 and 32 bias the bolt head 12 into door closing position.
- handle 22 may be depressed against the influence of these springs to cause tongue 28 to engage member 33 and retract the bolt head 12 under the influence of the pressure exerted by end portion 35 against tail-piece 23.
- spring 32 may be supplemented or replaced by a torsion spring 36 coiled about a pin 37 secured to wall structure 21 and having one end 38 secured to an anchorage 39 on the wall structure 21 and a second end 40 which is received in a recess in end portion 35 of member 33.
- a latch bolt stop lever 41 is pivotally mounted at one end on a pin 42 secured to wall structure 21.
- Lever 41 is formed with a notch 43 at the end remote from pivot pin 42 and received in notch 43 is a fusible pin 44.
- Pin 44 is of a metal which will melt at a predetermined required temperature. Zinc is one example of such a metal.
- lever 41 carries a spring abutment 45 against which may be engaged by the end of a torsion spring 46 which is coiled about pivot pin 42. The other end of spring 46 may be engaged against pin 39 mounted on wall structure 21.
- lever 41 At an appropriate point below lever 41 -is an abutment element 47 mounted on wall structure 21.
- lever 41 has a tab 48 which projects beyond the lower side of notch 43.
- the latch bolt stop lever 41 assumes the horizontal ineffective position illustrated in FIG. 1 in which the tab 48 is disposed above bolt head 12 and in no way interferes with the operation either of retracting bolt head 12 into door opening position or of having it move into door closing position under the influence of the springs above described. Should a fire occur, any of the springs 25, 32 or 36 may become annealed, in which event they lose their holding power and the weight of handle 26 would cause the bolt head 12 to be retracted.
- FIGS. 4, 5 and 6 This embodiment which is illustrated in FIGS. 4, 5 and 6, is shown as mounted on door 9 the outer plate 10 and the inner plate of the lock set both of which have an opening for a bolt head 49 which is generally similar to bolt head 12.
- the plate 50 is secured to outer plate 10 in any preferred manner and secured to plate 50 and is a housing designated generally 51 comprising top wall 52, bottom wall 53 and side walls, one of which is shown at 54.
- Secured to bolt head 49 is a tail 55 formed with a slot 56 which receives a guide pin 57 mounted on wall structure 54.
- Tail 55 is formed with an end flange 58 which is engaged by one end of an expansion coil spring 59, the other end of which engages a spring abutment 60 mounted on wall structure 54.
- a handle 61 is drivably mounted on a shaft 62 which is pivoted on wall structure 54 and to which is also drivably connected an actuator 63, the upper end portion of which engages flange 58 on tail 55.
- Actuating member 63 is also formed with a projection 64 which is engaged by one end of a coil spring 65, the other end of which is secured to an anchor 66 secured to wall structure 54. The tendency of the springs 59 and is to bias the bolt head 49 into door closing position.
- the lock set mechanism above described is another type which is meeting with widespread use.
- a latch bolt stop lever 67 is pivotally mounted on a pin 68 secured to wall structure 54. At the end remote from pivotal mounting 68, lever 67 is formed with a notch 69, a tab 70 on the upper side of the notch and an end portion 71 on the lower side. A fusible pin 72 is received in notch 69 and is secured to wall structure 54.
- latch bolt stop lever 67 assumes the horizontal position depicted in FIG. 4 in which end portion 71 is above and clear of bolt head 49 and does not interfere with movement thereof.
- handle 61 may be depressed to retract bolt head 49 against the influence of springs 59 and 65 or pennit it to be moved into door closing position by these springs.
- a lock set including a housing presenting a wall structure, a latch bolt having a bolt head presenting a top face and a rear face, spring means normally biasing said bolt head into door closing position and a handle pivotally mounted on the wall structure and operatively connected to the latch bolt to retract the same against the influence of said spring means, the improvement consisting of a lock set comprising:
- a latch bolt stop lever pivotally mounted at one end on said vwall structure and having a notch atits 0. means for limiting downward swinging movement of said lever when said fusible pin melts.
- the means for limiting downward swinging movement of the latch bolt stop lever consists of a tab formed on said lever and extending beyond said notch and which engages the upper face of the bolt head when the lever swings downwardly, and an end portion below said notch which engages the rear face of the bolt head after the lever has swung downwardly and reaches its lowermost position as determined by said tab.
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Special Wing (AREA)
Abstract
Description
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US33693273 US3811717A (en) | 1973-03-01 | 1973-03-01 | Latch bolt stop lever for fire door lock sets |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US33693273 US3811717A (en) | 1973-03-01 | 1973-03-01 | Latch bolt stop lever for fire door lock sets |
Publications (1)
Publication Number | Publication Date |
---|---|
US3811717A true US3811717A (en) | 1974-05-21 |
Family
ID=23318343
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US33693273 Expired - Lifetime US3811717A (en) | 1973-03-01 | 1973-03-01 | Latch bolt stop lever for fire door lock sets |
Country Status (1)
Country | Link |
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US (1) | US3811717A (en) |
Cited By (38)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3907447A (en) * | 1973-11-16 | 1975-09-23 | Alexei Mikhailovich Arkharov | Device for locking an actuating element |
US4003593A (en) * | 1976-02-23 | 1977-01-18 | Herbert Wilzig | Push door-latch opener |
US4005886A (en) * | 1975-12-18 | 1977-02-01 | Door Controls Incorporated | Flush bolt mechanisms |
US4007954A (en) * | 1975-11-10 | 1977-02-15 | Walter Kidde & Company, Inc. | Hospital latch |
US4012066A (en) * | 1975-10-28 | 1977-03-15 | Accurate Lock And Hardware Co. | Lock assembly for automatically dead bolting a closure |
US4015869A (en) * | 1975-09-30 | 1977-04-05 | Access Control Systems Pty. Ltd. | Catch mechanism |
US4071270A (en) * | 1975-01-20 | 1978-01-31 | Emhart Industries, Inc. | Mortise lock having internal auxiliary spring for lever |
US4145900A (en) * | 1977-11-21 | 1979-03-27 | Walter Kidde & Company, Inc. | Lock for fire doors |
US4161804A (en) * | 1977-12-21 | 1979-07-24 | Rixson-Firemark, Inc. | Heat-actuated door latch |
USRE30263E (en) * | 1974-10-02 | 1980-04-29 | Access Controls System Pty. Ltd. | Catch mechanism |
US4445717A (en) * | 1981-05-18 | 1984-05-01 | Leigh Products, Inc. | Flush bolt |
US4726613A (en) * | 1986-03-03 | 1988-02-23 | Best Lock Corporation | Fire safety door latch |
US4819976A (en) * | 1987-04-20 | 1989-04-11 | American Device Manufacturing Company | Door latch |
US4824150A (en) * | 1988-02-29 | 1989-04-25 | Adams Rite Manufacturing Company | Fire responsive safety door assembly |
US4865367A (en) * | 1988-05-09 | 1989-09-12 | Adams Rite Manufacturing Company | Safety door with counterweight locking |
US4867496A (en) * | 1988-03-14 | 1989-09-19 | Trine Products Corporation | Electrically operable strike |
US4934800A (en) * | 1989-05-18 | 1990-06-19 | Adams Rite Manufacturing Company | Low cost lever handle entry function |
US4958866A (en) * | 1988-03-21 | 1990-09-25 | Fixfabriken Ab | Doorleaf lock |
US5004277A (en) * | 1988-08-01 | 1991-04-02 | Triangle Brass Manufacturing Company | Flush bolt mechanism for double doors |
US5074602A (en) * | 1990-11-30 | 1991-12-24 | Adams Rite Manufacturing Company | Dogging mechanism for actuator lever |
US5076620A (en) * | 1988-08-01 | 1991-12-31 | Triangle Brass Manufacturing Company | Flush bolt mechanism for double doors |
US5427420A (en) * | 1994-01-10 | 1995-06-27 | Schlage Lock Company | Latchbolt assembly, with fusibly-actuated deadlocking |
US5464259A (en) * | 1993-06-01 | 1995-11-07 | Von Duprin, Inc. | Door latch assembly with meltable fuse mechanism |
US5592838A (en) * | 1992-02-20 | 1997-01-14 | Mas-Hamilton Group | Anti-attack interlocks for a combination lock mechanism |
US5690371A (en) * | 1994-11-21 | 1997-11-25 | Schlage Lock Company | Fused spring latch |
US6049287A (en) * | 1998-03-02 | 2000-04-11 | Yulkowski; Leon | Door with integrated smoke detector and hold open |
US6259352B1 (en) | 1998-03-02 | 2001-07-10 | Leon Yulkowski | Door lock system |
US20030185691A1 (en) * | 2002-03-27 | 2003-10-02 | Harger James R. | Multipoint lock assembly |
US20040035159A1 (en) * | 1998-09-10 | 2004-02-26 | Ab Fas Lasfabrik | Tamper proof locking device |
US20040061339A1 (en) * | 2001-01-24 | 2004-04-01 | Jaakko Lemettinen | Solenoid arrangement for controlling handle operation in a door lock |
US20050144822A1 (en) * | 2003-12-29 | 2005-07-07 | Sargent Manufacturing Company | Exit device with lighted touchpad |
US20050166647A1 (en) * | 2004-01-29 | 2005-08-04 | Walls Christopher G. | Multi-point door lock and offset extension bolt assembly |
US20080178530A1 (en) * | 2007-01-29 | 2008-07-31 | Newell Operating Company | Lock Assembly |
US20100007154A1 (en) * | 2008-07-08 | 2010-01-14 | Schacht David M | Exit device |
US20160145906A1 (en) * | 2014-11-24 | 2016-05-26 | Taiwan Fu Hsing Industrial Co., Ltd. | Latch assembly |
CN106869659A (en) * | 2017-04-11 | 2017-06-20 | 公安部四川消防研究所 | A kind of normally opened fire resistant doorsets self closing device of non-transformer formula |
US20190128018A1 (en) * | 2017-10-26 | 2019-05-02 | Schlage Lock Company Llc | Exit device with self-adjusting coupling mechanism |
WO2023100202A1 (en) * | 2021-12-02 | 2023-06-08 | Cisa S.P.A. | Lock for fireproof doors and windows |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1086126A (en) * | 1912-12-26 | 1914-02-03 | Yale & Towne Mfg Co | Bolt mechanism for doors. |
US2253547A (en) * | 1940-12-04 | 1941-08-26 | George R Adams | Flush lock |
US3705739A (en) * | 1971-07-07 | 1972-12-12 | Ilco Corp | Panic lock device |
-
1973
- 1973-03-01 US US33693273 patent/US3811717A/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1086126A (en) * | 1912-12-26 | 1914-02-03 | Yale & Towne Mfg Co | Bolt mechanism for doors. |
US2253547A (en) * | 1940-12-04 | 1941-08-26 | George R Adams | Flush lock |
US3705739A (en) * | 1971-07-07 | 1972-12-12 | Ilco Corp | Panic lock device |
Cited By (49)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3907447A (en) * | 1973-11-16 | 1975-09-23 | Alexei Mikhailovich Arkharov | Device for locking an actuating element |
USRE30263E (en) * | 1974-10-02 | 1980-04-29 | Access Controls System Pty. Ltd. | Catch mechanism |
US4071270A (en) * | 1975-01-20 | 1978-01-31 | Emhart Industries, Inc. | Mortise lock having internal auxiliary spring for lever |
US4015869A (en) * | 1975-09-30 | 1977-04-05 | Access Control Systems Pty. Ltd. | Catch mechanism |
US4012066A (en) * | 1975-10-28 | 1977-03-15 | Accurate Lock And Hardware Co. | Lock assembly for automatically dead bolting a closure |
US4007954A (en) * | 1975-11-10 | 1977-02-15 | Walter Kidde & Company, Inc. | Hospital latch |
US4005886A (en) * | 1975-12-18 | 1977-02-01 | Door Controls Incorporated | Flush bolt mechanisms |
US4003593A (en) * | 1976-02-23 | 1977-01-18 | Herbert Wilzig | Push door-latch opener |
US4145900A (en) * | 1977-11-21 | 1979-03-27 | Walter Kidde & Company, Inc. | Lock for fire doors |
US4161804A (en) * | 1977-12-21 | 1979-07-24 | Rixson-Firemark, Inc. | Heat-actuated door latch |
US4445717A (en) * | 1981-05-18 | 1984-05-01 | Leigh Products, Inc. | Flush bolt |
US4726613A (en) * | 1986-03-03 | 1988-02-23 | Best Lock Corporation | Fire safety door latch |
US4819976A (en) * | 1987-04-20 | 1989-04-11 | American Device Manufacturing Company | Door latch |
US4824150A (en) * | 1988-02-29 | 1989-04-25 | Adams Rite Manufacturing Company | Fire responsive safety door assembly |
US4867496A (en) * | 1988-03-14 | 1989-09-19 | Trine Products Corporation | Electrically operable strike |
US4958866A (en) * | 1988-03-21 | 1990-09-25 | Fixfabriken Ab | Doorleaf lock |
US4865367A (en) * | 1988-05-09 | 1989-09-12 | Adams Rite Manufacturing Company | Safety door with counterweight locking |
US5004277A (en) * | 1988-08-01 | 1991-04-02 | Triangle Brass Manufacturing Company | Flush bolt mechanism for double doors |
US5076620A (en) * | 1988-08-01 | 1991-12-31 | Triangle Brass Manufacturing Company | Flush bolt mechanism for double doors |
US4934800A (en) * | 1989-05-18 | 1990-06-19 | Adams Rite Manufacturing Company | Low cost lever handle entry function |
US5074602A (en) * | 1990-11-30 | 1991-12-24 | Adams Rite Manufacturing Company | Dogging mechanism for actuator lever |
US5592838A (en) * | 1992-02-20 | 1997-01-14 | Mas-Hamilton Group | Anti-attack interlocks for a combination lock mechanism |
US5464259A (en) * | 1993-06-01 | 1995-11-07 | Von Duprin, Inc. | Door latch assembly with meltable fuse mechanism |
US5427420A (en) * | 1994-01-10 | 1995-06-27 | Schlage Lock Company | Latchbolt assembly, with fusibly-actuated deadlocking |
US5690371A (en) * | 1994-11-21 | 1997-11-25 | Schlage Lock Company | Fused spring latch |
US6259352B1 (en) | 1998-03-02 | 2001-07-10 | Leon Yulkowski | Door lock system |
US6049287A (en) * | 1998-03-02 | 2000-04-11 | Yulkowski; Leon | Door with integrated smoke detector and hold open |
US6910357B2 (en) | 1998-09-10 | 2005-06-28 | Ab Fas Lasfabrik | Tamper proof locking device |
US20040035159A1 (en) * | 1998-09-10 | 2004-02-26 | Ab Fas Lasfabrik | Tamper proof locking device |
US20040061339A1 (en) * | 2001-01-24 | 2004-04-01 | Jaakko Lemettinen | Solenoid arrangement for controlling handle operation in a door lock |
US6953210B2 (en) * | 2001-01-24 | 2005-10-11 | Abloy Oy | Solenoid arrangement for controlling handle operation in a door lock |
US7353637B2 (en) | 2002-03-27 | 2008-04-08 | Newell Operating Company | Multipoint lock assembly |
US20050144848A1 (en) * | 2002-03-27 | 2005-07-07 | Newell Operating Company | Multipoint lock assembly |
US6871451B2 (en) * | 2002-03-27 | 2005-03-29 | Newell Operating Company | Multipoint lock assembly |
US20030185691A1 (en) * | 2002-03-27 | 2003-10-02 | Harger James R. | Multipoint lock assembly |
US20080150300A1 (en) * | 2002-03-27 | 2008-06-26 | Newell Operating Company | Multipoint Lock Assembly |
US20050144822A1 (en) * | 2003-12-29 | 2005-07-07 | Sargent Manufacturing Company | Exit device with lighted touchpad |
US7204050B2 (en) | 2003-12-29 | 2007-04-17 | Sargent Manufacturing Company | Exit device with lighted touchpad |
US20050166647A1 (en) * | 2004-01-29 | 2005-08-04 | Walls Christopher G. | Multi-point door lock and offset extension bolt assembly |
US7404306B2 (en) | 2004-01-29 | 2008-07-29 | Newell Operating Company | Multi-point door lock and offset extension bolt assembly |
US20080178530A1 (en) * | 2007-01-29 | 2008-07-31 | Newell Operating Company | Lock Assembly |
US7946080B2 (en) | 2007-01-29 | 2011-05-24 | Newell Operating Company | Lock assembly |
US20100007154A1 (en) * | 2008-07-08 | 2010-01-14 | Schacht David M | Exit device |
US8146961B2 (en) | 2008-07-08 | 2012-04-03 | Von Duprin, Inc. | Exit device |
US20160145906A1 (en) * | 2014-11-24 | 2016-05-26 | Taiwan Fu Hsing Industrial Co., Ltd. | Latch assembly |
US10060160B2 (en) * | 2014-11-24 | 2018-08-28 | Taiwan Fu Hsing Industrial Co., Ltd. | Latch assembly |
CN106869659A (en) * | 2017-04-11 | 2017-06-20 | 公安部四川消防研究所 | A kind of normally opened fire resistant doorsets self closing device of non-transformer formula |
US20190128018A1 (en) * | 2017-10-26 | 2019-05-02 | Schlage Lock Company Llc | Exit device with self-adjusting coupling mechanism |
WO2023100202A1 (en) * | 2021-12-02 | 2023-06-08 | Cisa S.P.A. | Lock for fireproof doors and windows |
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Legal Events
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AS | Assignment |
Owner name: KIDDE, INC. Free format text: CHANGE OF NAME;ASSIGNOR:WALTER KIDDE & COMPANY, INC.;REEL/FRAME:004056/0845 Effective date: 19820830 Owner name: KIDDE, INC., NEW YORK Free format text: CHANGE OF NAME;ASSIGNOR:WALTER KIDDE & COMPANY, INC.;REEL/FRAME:004056/0845 Effective date: 19820830 |
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STCF | Information on status: patent grant |
Free format text: PATENTED FILE - (OLD CASE ADDED FOR FILE TRACKING PURPOSES) |
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AS | Assignment |
Owner name: KIDDE, INC. Free format text: CHANGE OF NAME;ASSIGNOR:WALTER KIDDE & COMPANY, INC.;REEL/FRAME:004589/0612 Effective date: 19820830 Owner name: SARGENT MANUFACTURING COMPANY, 100 SARGENT DRIVE, Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:KIDDE, INC., A CORP. OF DE.;REEL/FRAME:004589/0616 Effective date: 19860206 |