Fusible Closure Latch Or Retainer Patents (Class 49/7)
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Patent number: 4333489Abstract: For releasing and resetting a releasable and resettable device: a spring-motor dual-functioning mechanism comprising release means to release the device, a spring motor to reset the device, and spring-winding means to rewind the spring motor, the spring motor storage power being sufficient for at least two complete resetting operations of the mechanism.Type: GrantFiled: September 7, 1979Date of Patent: June 8, 1982Assignee: Actionair Equipment LimitedInventors: Robert J. Magill, Donald J. Lockley, Richard J. Perrin
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Patent number: 4311329Abstract: Push rod of panic-type latching device contains a fusible section which melts in the event of a hot fire so that the temperature will not cause elongation of push rod to disengage upper door latch.Type: GrantFiled: November 2, 1979Date of Patent: January 19, 1982Assignee: Scovill Inc.Inventor: Stephen L. Kral
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Patent number: 4304248Abstract: An assembly comprising a fluid damper with movable blades which is contained in a duct. On the outside of the duct there is a blade release mechanism. A fusible actuating cartridge is arranged to act on the blade release mechanism to release the blades from their normal postions if and when fire breaks out. The cartridge projects through an opening in the duct so as to be readily removable from the duct.Type: GrantFiled: December 11, 1979Date of Patent: December 8, 1981Assignee: Actionaire Equipment LimitedInventor: Robert J. Magill
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Patent number: 4273283Abstract: There is provided a self-regulating air register which includes a housing, louvres in the housing for closing and opening a flow path for air, a crank arm connected to the louvres which can, upon rotation, adjust the degree of closure, a shaft extending through the housing means, and a bi-metallic element connected at one end to the shaft and to a control knob at the other end. The control knob is mounted on the housing and is capable of selective adjustment in terms of angle. The bi-metallic element is thus adapted to regulate the angular orientation of the shaft with respect to the housing means, with an additional adjustment by the control knob. A lever is mounted on the shaft and extends perpendicularly from it. In the lever is a slot in which part of the crank arm is captive. At least part of the slot includes a portion disposed such that when part of the crank arm is located in the portion, the crank arm is caused to rotate as the lever rotates.Type: GrantFiled: November 3, 1978Date of Patent: June 16, 1981Inventor: Allen W. Edwards
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Patent number: 4265051Abstract: A pair of doors hinged to a frame and including a self-locking three-point latch and coordinated closing system.Type: GrantFiled: February 23, 1979Date of Patent: May 5, 1981Inventor: Clarence E. Williams
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Patent number: 4262448Abstract: A safety cabinet for the storage of flammable or combustible materials has doors and a closure mechanism designed to automatically close and latch the doors in the event of fire. In one version, apparatus is provided to time the closing of the doors to insure a complete seal and lock. In a second version, apparatus is provided to seal the cabinet independently of the closing sequence of the doors.Type: GrantFiled: June 20, 1979Date of Patent: April 21, 1981Assignee: Justrite Manufacturing CompanyInventor: Frank S. Flider
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Patent number: 4191412Abstract: A door closure apparatus is provided for automatically closing a bifold door of a storage cabinet for combustible materials in the event of elevated temperatures. A guide assembly hingedly mounted on the free end of the folding door includes guide fingers which ride along a guide path in a channel guide track at the top of the cabinet. At one end of the track there is mounted a bracket slidably carrying a latch member movable between a latching condition in the guide path and a release condition out of the guide path. The latch member is normally held in its latching condition by a spring and fusible link combination which override a smaller spring urging the latch member toward its release condition. Upon melting of the fusible link the latch member is moved to its release condition by the smaller spring. The latch member is shaped to permit the guide member to cam past it as the door moves to its open position but prevents return movement of the guide member to hold the door in its open position.Type: GrantFiled: June 16, 1978Date of Patent: March 4, 1980Assignee: Lyon Metal Products, IncorporatedInventor: William R. LeKander
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Patent number: 4184288Abstract: A combination smoke and fire shield damper comprising a line of blades each of which is so supported for rotation in a surrounding frame that the blades are swingable about parallel axes to open or close an opening in the frame, in which the blades are provided with "opened-out" trailing edges so that the leading edge of each blade interlocks with the trailing edge of an adjacent blade when the blades are in their fully-closed positions.Type: GrantFiled: June 16, 1978Date of Patent: January 22, 1980Assignee: Actionair Equipment LimitedInventors: Robert J. Magill, Sydney J. Field
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Patent number: 4161804Abstract: A door control comprising a heat-actuated door latch and a combination door-closing-arm holder and release. An optional smoke detector is located within a holder-release housing. During normal conditions, the door-closing arm is set at a hold-open angle free of the door to permit an easy door swing. In response to an emergency or smoke condition, the closing arm is released to pick up and close the door. In the event of excessive heat, the door is latched in response to the separation of fusible link segments. Heat from the side of the door opposite the latch housing is conducted through the door by a heat conducting rod.Type: GrantFiled: December 21, 1977Date of Patent: July 24, 1979Assignee: Rixson-Firemark, Inc.Inventors: Richard E. D'Hooge, Frank S. Pasek
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Patent number: 4146994Abstract: A pair of doors hinged to a frame and including a self-locking three-point latch and coordinated closing system.Type: GrantFiled: January 12, 1978Date of Patent: April 3, 1979Inventor: Clarence E. Williams
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Patent number: 4104834Abstract: A wall vent preferably for use in a high-rise building is releasably opened for venting a fire in the building. The vent comprises a frame, a window or venting panel that is pivotally supported on one of its sides, means for biasing the venting panel to an open position and latch means for maintaining the panel in a closed position. The latch means may be either manually or electrically released or released upon detection of heat or smoke, and may be released either at the panel or remotely. Each wall vent is also preferably releasable to an open position from a story of the building therebelow.Type: GrantFiled: September 27, 1976Date of Patent: August 8, 1978Assignee: Wasco Products, Inc.Inventors: Joseph R. Anghinetti, Paul A. Couture
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Patent number: 4090437Abstract: Compact and autonomous device of high power for the opening of a smoke and heat vent, placed between the fix and the opening frame of the vent and composed of a fix arm forming the fix frame and a pivoting arm, the opening force being transmitted to the opening frame by means of a hinge fixed on a fitting piece gliding in the pivoting arm, which is retained in a closed position by means of a pivoting hook, driven by different pulling means, among which a pivoting lever kept in a retaining position by an electro-magnet, all forces and tensions being entirely taken up within the autonomous device and working in vertical and parallel planes, which are very close to one another.Type: GrantFiled: July 16, 1976Date of Patent: May 23, 1978Inventor: Pierre Emmanuel Eugene Jean Bogaert
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Patent number: 4081964Abstract: Apparatus for the thermal and electrical initiation of fire protection devices including a housing with a displaceable support member and an abutment member provided therein. A blocking or spacing device is disposed between the displaceable support member and the abutment member with the displaceable supports member being biased against said blocking device in the direction toward the abutment member. The blocking device is responsive to the exceeding of a predetermined temperature for enabling displacement of the displaceable support member for initiating a fire protection device. The abutment member is constructed as a plunger displaceable within the housing in the direction towards the displaceable support member, and an electrically actuatable compressed-gas-generating igniter device is disposed on the side of the plunger facing away from the blocking device for producing compressed gas to cause displacement of the plunger toward the blocking device.Type: GrantFiled: July 1, 1976Date of Patent: April 4, 1978Assignee: Dynamit Nobel AktiengesellschaftInventors: Hellmut Bendler, Anton Bretfeld
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Patent number: 4043128Abstract: Apparatus for fire protection purposes including a compressed-gas cartridge device with at least a thermally responsive triggering mechanism. The triggering mechanism includes a striker for forcibly being driven toward the compressed-gas cartridge device and a locking device for maintaining the striker at a spacing from said compressed-gas cartridge device by engaging a portion of said striker pin with one end portion thereof. Another end portion of the locking device is biased against a blocking device with the blocking device being disposed between the another end portion of the locking device and an abutment member. The blocking device is responsive to the exceeding of a predetermined temperature for enabling displacement of the locking device out of engagement with the striker thereby permitting movement of the striker toward the compressed-gas cartridge device.Type: GrantFiled: February 27, 1976Date of Patent: August 23, 1977Assignee: Dynamit Nobel AktiengesellschaftInventors: Hellmut Bendler, Anton Bretfeld
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Patent number: 4015869Abstract: A catch mechanism for installation in a door frame to cooperate with a door lock on a fire door. The mechanism includes a catch member pivotable between an operative position in which to serve as a door catch and an inoperative position to enable release of the door no matter what the condition of the door lock. The mechanism includes a heat responsive locking device which locks the catch member in its catch position in the event of a fire generating high temperatures. The locking device may comprise a biased locking plunger mounted in a cavity within the catch member and normally held in a retracted position by a heat fusible metal plug but extendible on melting of the plug to engage the catch body and so lock the catch member.Type: GrantFiled: September 30, 1975Date of Patent: April 5, 1977Assignee: Access Control Systems Pty. Ltd.Inventor: Stephen Horvath
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Patent number: 4012066Abstract: A lock assembly for automatically dead bolting a closure to a closure frame when the ambient temperature is raised above a predetermined temperature by fire comprises a striker plate, which defines a bolt hole, mounted on the closure frame. A cooperating latching mechanism, installed in the closure, includes a housing and a bolt assembly mounted in housing for reciprocal movement to and from a latched position projecting into the striker plate bolt hole and for movement to an extreme dead bolted position projecting further into the bolt hole beyond the latched position. A stop pin mechanism associated with the bolt assembly prevents the bolt assembly from being moved out of the dead bolted position once this position is assumed and a spring urges the bolt toward the dead bolted position.Type: GrantFiled: October 28, 1975Date of Patent: March 15, 1977Assignee: Accurate Lock and Hardware Co.Inventor: Ronald M. Salvatore
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Patent number: 4007954Abstract: A latch bolt mechanism of the push-pull type which includes a stop lever maintained normally in an inactive position by means of a fusible pin, the lever being adapted to drop into a position where it blocks the movement of the latch-withdrawing mechanism when the pin melts at a predetermined temperature due to a fire condition.Type: GrantFiled: November 10, 1975Date of Patent: February 15, 1977Assignee: Walter Kidde & Company, Inc.Inventor: Lars Erickson
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Patent number: 3996952Abstract: A control damper is mounted in a building duct system for closing a control opening through a housing or frame and includes a linkage connected to the housing and to a vane positioned in the control opening and is operative for moving the vane between a flow permitting position and a position closing the control opening. The linkage includes a fusible portion permitting a resilient member to move the vane to the position closing the control opening in the event of temperature above the melting point of the fusible portion. Cooperating latch members are mounted on the housing and on the vane and are moved into vane holding engagement after melting of a fusible portion and movement of the vane to the position closing the control opening through the housing.Type: GrantFiled: September 18, 1975Date of Patent: December 14, 1976Assignee: Ruskin Manufacturing CompanyInventor: James R. Root
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Patent number: 3977134Abstract: A roof vent for releasing smoke and heat from a building in the case of a fire is provided with a cover mounted on two track members for movement in the common direction of elongation of the track members which define therebetween an opening through the roof. The cover is permanently biased away from the position in which it closes the roof opening, but is normally retained in its closing position by a detent device which may be inactivated by temperature sensitive apparatus in the case of a fire. The operating elements of the vent are concealed from view and protected from the elements by being arranged under the cover member.Type: GrantFiled: February 28, 1975Date of Patent: August 31, 1976Inventor: Pierre Emmanuel Eugene Jean Bogaert
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Patent number: RE30204Abstract: A control damper is mounted in a building duct system for closing a control opening through a housing or frame and includes a linkage connected to the housing and to a vane positioned in the control opening and is operative for moving the vane between a flow permitting position and a position closing the control opening. The linkage includes a fusible portion permitting a resilient member to move the vane to the position closing the control opening in the event of temperature above the melting point of the fusible portion. Cooperating latch members are mounted on the housing and on the vane and are moved into vane holding engagement after melting of a fusible portion and movement of the vane to the position closing the control opening through the housing.Type: GrantFiled: November 9, 1978Date of Patent: February 5, 1980Assignee: Ruskin Manufacturing CompanyInventor: James R. Root
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Patent number: RE30263Abstract: A catch mechanism for installation in a door frame to cooperate with a door lock on a fire door. The mechanism includes a catch member pivotable between an operative position in which to serve as a door catch and an inoperative position to enable release of the door no matter what the condition of the door lock. The mechanism includes a heat responsive locking device which locks the catch member in its catch position in the event of a fire generating high temperatures. The locking device may comprise a biased locking plunger mounted in a cavity within the catch member and normally held in a retracted position by a heat fusible metal plug but extendible on melting of the plug to engage the catch body and so lock the catch member.Type: GrantFiled: July 21, 1978Date of Patent: April 29, 1980Assignee: Access Controls System Pty. Ltd.Inventor: Stephen Horvath