Abstract: A trailer cover lift arm for assisting in opening a trailer cover and supporting the cover in an open position. The lift arm can include four elongate members each member having two ends pivotably coupled to define a member having parallelogram-like shape. First and second elongated gas springs can be disposed within the parallelogram member to assist an operator in opening, and supporting a trailer cover in an open position. The lift arm can be used to two-way tilt open a trailer cover.

Abstract: A door controlling device for opening and closing a door in a wall has a first arm, one end of which is mounted to the wall and the other end of which is pivotally attached to the second end of a second arm. The first end of the second arm is pivotally attached to the top of a door and is adapted for rotation about a horizontal axis at the first end thereof. An electric motor attached to the device has a shaft which drives a gear train, and an output shaft of the gear train is connected to the input end of an electrically operated clutch. The output shaft of the clutch is connected to the first end of one of the arms such that upon the simultaneous engagement of the clutch and the energizing of the motor, that arm will be rotated about the horizontal axis at the first end and will cause the door to be opened or closed.

Abstract: A window operator mechanism 10 includes a worm gear 22 which is generally parallel to the window when closed. A drive gear 24 is generally transverse and is at 45.degree. angle to the horizon. The operator 10 includes a housing 11 which is designed for drop-in assembly and includes 3 open gear receiving receptacles 15, 16 and 17.

Abstract: An improved torque window assembly for motor vehicles has a peripheral frame defining an opening, and a moveable glazing pane pivotally mounted to the frame for movement about a pivot axis between an open and closed position. A torque handle is operatively connected to the glazing pane by a linkage assembly, including a torque bar which is rotatable about its longitudinal axis. A mounting assembly for the moveable glazing pane includes a hinge rail along a peripheral edge of the glazing pane. The hinge rail provides a U-shaped glazing channel to receive the peripheral edge of the glazing pane with a biased interference fit. The linkage from the torque bar to the hinge rail includes a one-piece hinge link having a substantially planar link section perpendicular to the hinge rail and two or more tabs received, one each, into U-shaped hinge channels extending axially along the hinge rail.

Abstract: A door retainer mechanism on a padmounted switchgear cabinet includes a pair of elongated links coupled between an access door and housing of the cabinet. The links are pivotally connected respectively to the access door and housing and also pivotally connected to one another. The links are pivotable relative to each other between folded and unfolded conditions with respect to one another as the access door is moved between closed and opened positions relative to the cabinet housing. The links are operable automatically to latch with one another in the unfolded condition upon the access door reaching the opened position after being moved by a worker from the closed position relative to the cabinet housing. The links of the door retainer mechanism, once they have reached the unfolded condition and become latched with one another, function to retain the access door in the opened position and prevent the access door from returning to the closed position.

Abstract: A window operator and lock structure for controlling a window sash relative to a window frame, including a drive input securable to a frame and engaging both an operator linkage securable to a window sash to effectuate motion of a secured sash relative to a frame, and a lock linkage securable to a lock structure for locking a secured sash to a frame. A link in the lock linkage moves in a generally longitudinal direction when operating the lock structure and includes a substantially transverse slot. A cam is pivotable about a cam axis fixed relative to the frame and includes a member receivable in the link slot to block operation of the lock linkage. The sash when closed against the frame includes a member engaging the cam to pivot the cam in a first direction moving the cam member clear of the link slot. The cam is blocked from pivoting when the sash is closed by engagement of the cam member with a side surface of the lock linkage link.

Abstract: A window stay is provided for a casement type window so that its window sash is shifted outwardly from the window frame as it is being opened. The window stay comprises a first arm, a second arm, and a third arm associated with a driving rod. The first arm has its respective ends pivotally attached to the window sash and the window frame and swings the window sash in relation to the window frame as the driving rod is operated. The second arm has its ends respectively pivotally attached to the window sash and the driving rod and swings the window sash in relation to the first arm as the driving rod is operated. The third arm has its ends respectively pivotally attached to the first arm and the driving rod and swings the first arm in relation to the window frame in accordance with the movement of the driving rod.

Abstract: A window operator and lock structure for controlling a window sash supported by a hinge for pivotal motion relative to a window frame, including a base mounted to the frame and supporting a drivable sun gear, and a planet gear engaging the sun gear and supported on the base for pivoting about the sun gear axis. One linkage is secured to the planet gear axis and the window sash to control motion of the sash. A locking structure secures the sash to the frame, which structure is operated by a gear arm fixedly secured to the planet gear and a cam link between the gear arm and the locking structure. Selective operation of the locking structure is effectuated by biasing the cam link against a fixed pin which engages a slot in the cam link to secure the cam link against operating the locking structure, and a trip on the sash which engages the cam link when the sash is closed against the frame to disengage the cam link from the pin.

Abstract: A casement operator for a window has a deployment linkage connectable between the window frame and the base and operable to cause movement of the window sash. A gear drive drives the deployment linkage, which coacts with a sash lock and a lock linkage having a window-actuated trigger. A plurality of rigid links are in pivotal engagement with the deployment linkage and in driving engagement with the gear drive, and a tie rod is disposed intermediate the rigid links and the sash lock. A trip lever with a trigger extending beyond the window frame is pivotally secured to the base and engageable with the lock linkage for restricting the movement of said lock linkage during a non-locking mode of operation of the operator.

Abstract: A window stay is provided for a casement window so that its window sash is shifted outwardly from the window frame as it is being opened. The window stay comprises a first arm, a second arm and a third arm associated with a driving rod. The first arm has points pivotally attached to the window sash and the window frame and swings the window sash in relation to the window frame as the driving rod is operated. The second arm has points respectively pivotally attached to the window sash and the driving rod swings the window sash in relation to the first arm as the driving rod is operated. The third arm has points respectively pivotally attached to the first arm and the driving rod and swings the first arm in relation to the window frame in accordance with the movement of the driving rod. The window stay is provided with a lock for the window sash, operated by the acting rod.

Abstract: The invention relates to an automatic remote controlled opening device which may be used to open and close doors, windows or similar closure systems. The opening device includes a receiver to detect control signals generated at a remote location from the device. The control signals are then utilized to effect selective operation of a mechanical system coupled with the closure system for opening and closing thereof. The mechanical system enables smooth and efficient automatic opening and closing, but does not inhibit manual operation of the door or the like. Control circuitry associated with the device enables various functions to be performed for selective operation of the device. The device may also be provided with a stored energy source of power such that it can be retrofit for use with an existing closure system. Auxiliary control of the device enables opening or closing in response to an emergency situation or other circumstances.

Abstract: A roof door device of a motor vehicle is disclosed. The vehicle has a roof and a side door operable to close a side door opening. The roof has a roof side opening which is positioned above and merged with the side door opening. A roof door is pivotally connected to the roof to open and close the roof side opening. A guide rail is mounted on the roof at a position near the roof side opening. A slider is slidable in and along the guide rail. A pivotal arm has one end pivotally connected to the roof and the other end connected to the roof door. A link member has one end pivotally connected to the slider and the other end pivotally connected to the pivotal arm, so that a movement of the slider in and along the guide rail in one direction causes folding of the pivotal arm thereby closing the roof side opening with the roof door. A pin is connected to the pivotal arm. The link member has a holding recess.

Abstract: The invention relates to an automatic remote controlled opening device which may be used to open and close doors, windows or similar closure systems. The opening device includes a receiver to detect control signals generated at a remote location from the device. The control signals are then utilized to effect selective operation of a mechanical system coupled with the closure system for opening and closing thereof. The mechanical system enables smooth and efficient automatic opening and closing, but does not inhibit manual operation of the door or the like. Control circuitry associated with the device enables various functions to be performed for selective operation of the device. The device may also be provided with a stored energy source of power such that it can be retrofit for use with an existing closure system. Auxiliary control of the device enables opening or closing in response to an emergency situation or other circumstances.

Abstract: A window operator and hinge structure for a casement window which can be simply factory pre-set for positioning of a window in either egress or wash modes, with switching between modes requiring no additional parts or special tools. The structure has a pivoted handle movable between a closed, inactive position flush with a sill cover and rotatable to an inclined, active position. The handle, in its pivoting movement, operates window locking structure and also controls the action of a brake, with release of the brake by raising of the handle to operative position. Motion-transmitting connections between the handle and linkage structure include the brake as well as the clutch, with the clutch effective to limit the torque that can be applied to the linkage. The handle can be moved to closed, inactive position with the window open so that no handle protrudes and this movement of the handle sets the brake so that a wind cannot move the window.

Abstract: An incubator for cell culture used in the field of biotechnology, in which a driving mechanism for rotating a tray stock for supporting a plurality of trays for cell culture is provided outside an incubator housing.

Abstract: Apparatus for moving a pivotable gate or the panel of a swinging door has a U-shaped or H-shaped frame with a plate-like web which supports a motor and two flanges which carry a turnable output shaft receiving motion from the motor by way of a linkage. The motor serves to turn the output shaft to one end position and one or more springs are used to permanently bias the output shaft to another end position. The web has holes for screws which are used to secure the frame to a housing or a like support, e.g., in a recess so that the web overlies the open side of the recess and the output shaft is located externally of the housing to be connectable to or detachable from a gate or a door panel. The frame and the parts thereon can be assembled at the manufacturing plant into a self-sustaining module.

Abstract: A buffer stop for an opening on a side-loading and side unloading furnace is mounted on a parallelogram linkage connected with a fixed support and is moved into position and out of position by the movement of a counterweight along a shaft on a member of the parallelogram linkage.

Abstract: An automatic gate opening device consisting of two arm members pivotally attached to form a link. One end of the link is pivotally attached to one end of a standoff. The second end of the standoff is fixedly attached to a hinge post supporting the gate. The second end of the link is pivotally attached to the gate. An electrically powered linear actuator is pivotally attached to the post arm and gate arm through levers. The solar panel charges a battery which, through a receiver unit, powers the actuator. Gate operator actuates gate with a portable transmitter.

Abstract: An operator for swing-door employs an electronic control unit for controlling the operation of a motor. The motor is bi-directionally driven at various speeds for opening, closing, braking and maintaining a given position of an associated swing-door. The motor drive shaft is mechanically connected via a timing belt/pulley system with an operator shaft for transmitting torque to a linkage assembly. The linkage assembly is configured to provide a high mechanical advantage at the fully opened and fully closed positions of the associated swing-door.

Abstract: A modular gate opening apparatus comprising a mounting frame which can be used to buttress a deteriorated fence post or secured to a new fence post. A vertical portion of the frame comprises a plurality of apertures in axial alignment allowing a wide variety of fastening means to be used to secure the frame in a number of configurations. A gate-receiving bracket is hingedly secured to the frame and is adapted to accomodate a wide variety of gate sizes. Actuator means are provided to move the gate receiving bracket, and the gate carried thereon, between an open and a closed position.

Abstract: A swinging gate operating mechanism having a crank and links which withdraw and insert the locking bolt as the linkages pass over center, and aligning linkage centers to allow the mechanism to rotate freely with a pair of indexing links to prevent the gate from rebounding out of the latch as the bolt impacts the jam post.

Abstract: A mechanism for protecting an automatic teller machine against entry through the opening in the fascia when the machine which normally occupies the opening is not occupying the opening, including a door (33) for closing the opening, a link (25) for operating the door, a Geneva claw (29) for moving the link between door opening and door closing positions in response to movement of the machine between conditions respectively occupying and not occupying the opening, and a locking pawl (31) for preventing opening of the door when the machine is not occupying the opening.

Abstract: In an apparatus for closing a fireproof door in case of emergency, the fireproof door and a release, which is secured to a door frame, are interconnected by a link mechanism comprising first, second and supplemental link arms. One end of the first link arms is pivoted to a driving shaft of a door closer secured to the fireproof door. The other end of the first link arm is pivoted to one end of the second link arm, the other end of which is pivoted to the release. The supplemental link arm is connected between the central point of the second link arm and a slider which is slidably mounted inside the release and latched by a latch mechanism when the fireproof door is open.When the slider is released from the latch mechanism by electrizing a solenoid which operates the latch mechanism, the slider is slid inside the release by the closing force of the door closer transmitted via the link mechanism, thereby closing the fireproof door.

Abstract: A door swinging device for automatically swinging a door hinged to a door supporting frame so as to be angularly movable about a vertical axis. The door swinging device includes: (a) a mechanism for rotating; (b) an arm member adapted to be attached at one end thereof to the rotating mechanism so as to be rotated in a plane; (c) a slider rotatably connected to the other end of the arm member; and (d) a guiding mechanism, adapted to be attached to one of the door and the door supporting frame, for guiding slidably the slider in a direction parallel with the plane.

Abstract: A pneumatic wall-vent closer for use in a thermal-pneumatic automatic temperature control system. The system is used to maintain constant temperature in livestock confinement buildings. The wall-vent closer attaches between the sill of a wall-vent in a confinement building and the wall-vent. As the temperature in the confinement building varies, the pneumatic wall-vent closer automatically opens and closes the wall vents to allow more or less air into the confinement building to maintain a pre-set stable temperature.

Abstract: A five sided steel box with a honeycomb member therein formed by corrugated sheets and defining a plurality of hexagonal elongate recesses. Spacers on the outer faces of the walls of the box have tie bars secured transversely thereto and the ends of the bars are welded to protective hoops. A door closes and seals the box and comprises a framework, a panel mounted on the framework by means of clamping screws or parallelogram linkage and coil springs, and a seal between the panel and the open side of the box. The framework is preferably hinged to protective hoops of the box at one side and provided with a latch arrangement at the other.

Abstract: An auxiliary door opening device comprises an extendible motor driven rotatable output shaft that engages and rotates a pivot shaft of a conventional door closing mechanism. The pivot shaft is drivingly connected to a pair of pivotally connected arms of the door closing mechanism, such that rotation of the pivot shaft causes the arms of the door closing device to pivot, urging the door open. The door opening device is activated by a remote switching device so that a handicapped person may open the door with a minimum of effort. A limit switch causes the motor to shut off and the output shaft to retract out of engagement with the pivot shaft when the door is fully opened. A solenoid apparatus holds the door open long enough to allow a handicapped person to pass through the door before allowing the door closing mechanism to urge the door closed.

Abstract: There is provided an assembly for opening and closing a closure lid of a grain bin or silo from a remote position, such as ground level. When a flexible cord or cable connected to the upper end of a lower lever is operatively pulled there is relative pivotal movement between this lower lever and an upper lever against the influence of a spring acting therebetween, with a latch arm the upper end of which is pivotally connected through an operating arm to the upper end of the upper lever being initially pivotted relative to the closure lid to move a latch member presented by the latch arm out of engagement with a fixed bracket member with resilient deformation of a relatively stiff but resiliently deformable strip connected between the closure lid and the operating arm. Thereafter, the closure lid is pivotally raised about a fixed pivot axis thereof. Releasing of the cord or cable results in the closure lid being urged under the influence of the spring pivotally to be lowered to its closed condition.

Abstract: Right and left hand casement windows employ a simple and compact operating linkage which can be installed either to the right or to the left of a center mounted gear drive, thus accomplishing universal operation of left or right hand windows through a structurally identical linkage. Locking tabs provided on an operator link of the mechanism coact in right or left hand mode of operation with locking projections on a stabilizer link to assure positive and secure closing of the window even in cases where the primary jamb-mounted window sash latch is unfastened.

Abstract: An operator for a casement-type window sash which is mounted adjacent one edge thereof on slider structure for combined pivoting and linear movement comprising, a first structure for causing said combined pivoting and linear movement including a first linkage having an operating arm and a connecting link which is pivotally connected to the operating arm intermediate the ends thereof and also pivotally connected to said sash and a constraining link pivotally connected to a window sill and to the sash at a distance from said edge.

Abstract: A bunker closure door mechanism for a bunker housing which has an opening with a seat around the opening which is closed by a closure door body, comprises, first and second spaced apart end levers which are pivotally connected between the housing and one end of the door. In addition, central levers are pivotally connected to the door body intermediate its length and pivotally connected at their opposite ends to a toggle lever which is pivotally mounted on the housing. The door body carries guide pins which are engageable in vertical slots of guide members supported on the bunker housing. By means of an actuator in the form of a fluid-pressure operated piston and cylinder connection, a guide rod is actuated to engage the central lever intermediate its length and to pivot it about its connection to the toggle lever and to also shift the toggle lever over its dead center position.

Abstract: A closure operator for a pivotally mounted closure, such as a vehicle sun roof or a pivoted window, having a series of pivotally interconnected links including an opener link pivoted to the closure and to an idler link which is pivotally mounted to a base. A driver link is pivotally connected between the opener link and a handle rotatable on the base whereby handle movement is imparted to the driver link for moving the opener link and the closure and with the movement of the opener link being partly guided by the idler link.

Abstract: An apparatus for controlling the movement of a movable tail-gate hinged to a tipping body of a vehicle. A collapsible toggle linkage is pivotally connected at one end to a flap adapted to bear against the tail-gate and the opposite end of the linkage is pivotally connected to a support secured to the vehicle. The toggle linkage is moved between erect and collapsed conditions by a piston and cylinder assembly, the piston rod of said assembly being connected to the interconnected ends of the toggle linkage by a bracket. The bracket serves as a stop to prevent outwardly collapsing movement of the toggle linkage. The tail-gate can be maintained in a closed position independently of any forces exerted by the piston and cylinder assembly.

Abstract: A tilting lever is mounted between a pivotal guide head and one side of a sliding door for a vehicle. The tilting lever is made of two angularly spaced arms with abutment surfaces at one end. The abutment surfaces engage with abutment surfaces and cam surfaces on the guide head and sliding door so as to hold the tilting lever in one of two positions. In one position the guide head is prevented from pivoting, while in the other position the sliding door is prevented from sliding. The guide head and sliding door are mounted together on a supporting arm pivoted to the body of the vehicle whereby the sliding door is first moved to an intermediate position and then to an open position.

Abstract: A passenger carrying vehicle having a side door providing means to enter and exit the vehicle. A hand-operated door operating apparatus has a hand crank assembly that is manually movable by the operator of the vehicle to open and close the door. The door operating apparatus has a first linkage and a second linkage operatively connected to join the door to the hand crank assembly. The first linkage is movable to an over-center position to hold the door in a closed position. The second linkage is movable to an over-center position to hold the door in an open position. A common control link connects the first linkage to the second linkage.

Abstract: A panel in the form of a movable window frame hinged along its upper edge is swung from a closed position to an open position by a mechanism which includes a torque rod and crank-operated self-locking gearing to actuate the torque rod. A vibration damper in the form of a friction pad or brake shoe that engages the torque rod at a distance from the gearing, prevents chattering of the window when it is being swung towards its closed position and also resists any tendency for wind or vibration to oscillate the window.

Abstract: To meet the legal requirements for bus safety, all locking devices on entrance and emergency doors must be removed before the bus is placed in service. For that purpose, the ignition key is made part of a simple locking assembly that is used to lock the emergency door. The driver's obtaining the key to operate the bus engine, insures the unlocking of the emergency door. The unlocking of the entrance door is accomplished by an inside pivoted cam assembly, actuated by a locking handle on the outside of the bus. The unlocking pivoted cam assembly inside the bus, then entirely disengages the door controlling mechanism, which then has normal operating freedom.

Abstract: A casement operator for a window has a deployment linkage connectable between the window frame and the base and operable to cause movement of the window sash. A gear drive drives the deployment linkage, which coacts with a sash lock and a lock linkage having a window-actuated trigger. A plurality of rigid links are in pivotal engagement with the deployment linkage and in driving engagement with the gear drive, and a tie rod is disposed intermediate the rigid links and the sash lock. A trip lever with a trigger extending beyond the window frame is pivotally secured to the base and engageable with the lock linkage for restricting the movement of said lock linkage during a non-locking mode of operation of the operator.