Abstract: A vehicle door seal includes a first wall portion and a second wall portion extending from the first wall portion, the first wall portion and second wall portion combining to define a flow passage. A projection extends from an exterior surface of the second wall portion along an entire length of the second wall portion. The projection is structured to convey excess moisture from a relatively higher portion of the seal downwardly toward another, relatively lower portion of the seal for drainage.

Abstract: A system for controlling one or more motorized windows. The motorized windows each have a processor, a network device and wireless transmitters enabling connection via a network. The network is controlled by one or more mobile devices which receive user input. The mobile devices wirelessly connect to a local area network (LAN) via a hub. One or more hubs are connected via the LAN. The motorized windows are networked via a personal area network (PAN). The hubs convert the LAN protocol to the PAN protocol. Sensors send sensor data along with real time weather data to the processor. The processor uses this sensor data to update charts and schedules in memory, then sends commands to the controller based on these updated charts and schedules according to user defined and factory set parameters. The system includes both local and cloud-based control.

Abstract: A latch unit for a sliding window mountable within a window frame. A cam portion engages the first side of a retention bar for urging the lip against the resiliency of a spring toward an unlatched configuration in which the flange disengages the frame as the handle is hingedly rotated.

Abstract: A mountable interlock security device for securing first and second sliding articles slidable relative to each other from an open position to a closed position such that in the closed position the sliding articles have overlapping interior edges. The security device comprises a first component mountable to the first sliding article and a second component mountable to the interior edge of the second sliding article. The two components of the security device are mounted to the overlapping end regions of respective sliding articles such that when the sliding articles are in the closed position, the two components of the security device cooperate to limit lateral movement of the sliding articles. In another aspect, a method of retrofitting interior and exterior sliding articles, such as doors or windows, of a building with a security device is provided.

Abstract: An apparatus for window used for moving a sliding window plate between an insertion position to be inserted into an opening portion of a fixed window plate, an extraction position to be extracted from the opening portion, and an open position to be shifted in a slide direction from the extraction position and to uncover the opening portion, includes a rotary member rotatably supported with respect to the sliding window plate; a drive member moved in a predetermined direction with respect to the sliding window plate; a fixation guide configured to convert a movement of the drive member in the predetermined direction with respect to the sliding window plate into a movement of the sliding window plate in an extraction/insertion direction with respect to the fixed window plate; and a wire configured to pull and move the drive member in the predetermined direction.

Abstract: A fenestration unit, such as a window, having an upper sash and a lower sash can be configured to permit separate and independent movement of the upper sash and the lower sash when desired, while restraining the upper sash from movement caused by movement of the lower sash. A fenestration unit having a single movable sash can also be configured to provide securement of the single movable sash against undesired vertical movement.

Abstract: A door unit for rail vehicles includes one or two sliding doors, means for supporting and guiding each sliding door between a closed position and an open position, and means for controlling the movement of each door between a closed position and an open position. The supporting, guiding and controlling means are carried on a support unit which defines an independent module with the doors, assembled prior to being mounted on the vehicle structure. The support unit includes at least one frame connectable to the vehicle structure and supporting each door, and the respective guiding and controlling means. The frame includes an upper cross-member, a lower cross-member and two uprights connecting these cross-members between them, in such a way to form a perimeter frame that defines a doorway, and which surrounds the four sides of the door or doors, when they are in the closed position.

Abstract: Fire and smoke barriers are deployed automatically on detection of fire of smoke. This can result in evacuees being on the wrong side of a deployed barrier and needing to evacuate through the barrier. The barrier includes a curtain rolled on a roller in a head box, a pair of side guides and a bottom bar. At least one of the side guides being partially movable, temporarily opening the barrier to allow the escape of an evacuee. Both side guides can be movable, allowing the barrier to swing from its top. Alternatively one side guide can be hinged to a wall with the other being able to move away from its wall, the head box joining the tops of the side guides. The barrier opens like a door to allow escape of an evacuee. The door having a closure spring to ensure it returns to its closed position.

Abstract: A window latch for a sliding window having a sliding sash including a latch plate and a housing. The housing includes an engagement element movable relative to the housing from a locked position operatively engaged with the latch plate to an unlocked position disengaged from the latch plate. A handle is operatively coupled to the engagement element and movable from a first position to a second position in a first direction corresponding to the direction the sliding sash to which the handle is attached moves to an open position. The handle operatively moves the engagement element from the locked position to the unlocked position as the handle is moved in the first direction toward the second position.

Abstract: A method of operating a window having a sash and a window opening limit device includes moving the sash from a closed position to a limited position. When in the limited position, the window opening limit device is in a projected position, and the sash is engaged with the window opening limit device. Moving the window opening limit device to a retracted position disengages the sash and the window opening limit device. The sash may then be moved from the limited position to an open range. When the sash is returned to the closed position, the window opening limit device automatically returns to the projected position, and the sash is disengaged with the window opening limit device.

Abstract: A window pane is mounted in a closed position outside a window frame, commonly referred to as a frameless window, and is movable into open positions parallel to the closed position. The window pane can be slid into a fully open position. Sliding mechanisms are attached to the window pane. Swing arms connect the sliding mechanisms to the window frame. Control arms also connect the sliding mechanisms to the window frame. They determine the distance of and control the translation of the window pan from the closed position to the initial open position. A handle is attached to at least one of the sliding mechanisms or window pane. Latching mechanisms secure the handle in the open positions. The invention is designed so that a plurality of screens allows air flow through the window frame, preventing passage of insects or debris through the window frame.

Abstract: A release mechanism for selectively connecting and disconnecting a sliding power window from a movable drive block includes a release knob and a release bracket coupled with the release knob by a cable or rod. The release bracket is pivotable between a locked position and a released position by displacement of the release knob. The release bracket includes a drive block pin engageable with the movable drive block and a locking block pin engageable with a fixed locking block. The mechanism allows a boat operator to operate a sliding roof/window manually in case of power failure or the like. The mechanism enables the window to be locked in the opened or closed position, and no tools are required to release the drive or to position/lock the sliding roof/window.

Abstract: A vehicle door security system comprising at least one deadbolt and respective operational elements, wherein the deadbolt secures at least one of a pivoting door and a roll up cargo door. The deadbolt toggles between an engaging configuration and a released configuration. The deadbolt can include an inertial release mechanism that disengages the deadbolt from the engaging configuration when the vehicle is subjected to a sudden impact. Alternatively, the deadbolt can be opened using a manual release mechanism located externally from the vehicle.

Abstract: The present invention provides improved pet doors, systems and related methods that may be used or installed on the fixed panel of a new or existing sliding door, such as a patio door, without interfering with the sliding movement of the companion door by providing a low profile closing panel and latch.

Abstract: A method of operating a window having a sash and a window opening limit device includes moving the sash from a closed position to a limited position. When in the limited position, the window opening limit device is in a projected position, and the sash is engaged with the window opening limit device. Moving the window opening limit device to a retracted position disengages the sash and the window opening limit device. The sash may then be moved from the limited position to an open range. When the sash is returned to the closed position, the window opening limit device automatically returns to the projected position, and the sash is disengaged with the window opening limit device.

Abstract: An access system for a temperature-controlled storage device includes a perimeter frame and least one display case door mounted within the perimeter frame. The perimeter frame and the at least one display case door are configured to move substantially vertically along a surface of the temperature-controlled storage device between a raised position and a lowered position. The at least one display case door is further configured to move substantially horizontally between an open position and a closed position when the perimeter frame is in the lowered position. The access system further includes a torsion spring and motor assembly coupled to the perimeter frame and configured to move the perimeter frame and the at least one display case door between the raised position and the lowered position.

Abstract: Channel reinforcements configured to move between open and closed location along with a window sash are described herein. The channel reinforcements may provide reinforcement to window jambs proximate the latch bolts that extend into jamb channels in the window jambs. The channel reinforcements may be coupled or uncoupled to the balances located in the window jambs.

Abstract: A sash window restrictor (20) has a housing (22) which is to be let into a vertical frame member (10) of one sash (normally the upper, outer sash) of a window, at a position, say, 10 cm above the top rail of the lower sash when the windows are closed. A tab (24) is mounted in the housing and can be retracted into the housing or extended from the housing. A mechanism acts between the tab and the housing and allows the tab to be pressed into the housing and held in the housing for a period of time before the tab is released to allow the tab to extend. With the tab extended, the lower sash (12) can be lifted until it reaches the tab (24) but no further, so that a 10 cm gap will be opened at the bottom of the window.

Abstract: A support arm for a sliding door of a mobile platform is provided and may include a first housing slidably attached to the mobile platform proximate to an opening of the mobile platform and a second housing attached to a door of the mobile platform and to the first housing. The second housing may be moveable relative to the first housing between a retracted state and an extended state.

Abstract: An improved forced entry resistant sash lock comprises a housing, a shaft rotatably mounted thereto, a locking cam and a delay cam rotatably and fixedly mounted to the shaft, respectively, and a locking spring. The delay cam selectively engages and drives the locking cam between a locked position and an unlocked position. Locking spring biasing causes engagement with a locking earn opening to lock the cam when in the latch-locked position, with engagement to a depth permitting releasable detent engagement in a delay cam recess. Selective engagement and driving of the locking cam comprises a first portion of delay cam rotation being without driven locking cam rotation, and a second portion causing driven locking cam rotation from a retracted position into a protruding position. Selective engagement is by contact between corresponding protrusions on the delay and locking cams. Shaft/delay cam counter-rotation to unlock the latch proceeds in a reverse manner.

Abstract: A window lock assembly accomplishing FER manipulation protection against unintended window opening without using additional components in the typical FER lock assembly by using a passive barrier system to help prevent access to both the lock cam and lock lever handle. The device can include at least one lock assembly mounted on the interior side of the window's inner sash and having a locked and unlocked position. The lock assembly engages with at least one keeper mounted on the outer sash to secure the window. The lock assembly housing has a barrier extending outward from the bottom surface which effectively helps to block access to the cam. The lock assembly housing also has a shroud which extends from the top and side edges which partially or completely covers the keeper and effectively helps to block access to the lever handle.

Abstract: A window assembly includes a first sash having a first rail having a longitudinal axis extending between a first end and an opposite second end. A continuous handle extends along the length of the first rail and is pivotally connected to the first rail between a lowered first position and a second raised position.

Abstract: A window vent stop for use in a sliding member of a sliding sash window assembly or a sliding door assembly. The vent stop has a housing adapted to be disposed in a recess in the non-movable sash member of the assembly. This housing includes a cavity with a bottom plate. A tumbler has at least one pivot for pivotally securing the tumbler to the housing for movement between an extended position, to prevent movement of the sliding member and a retracted position, to allow movement of the sliding member. Also within the housing is a spring for biasing the tumbler toward the extended position. The housing has one or more flexible members extending from the end walls of the housing that secure the housing to the non-movable sash member.

Abstract: Disclosed is a linear center rail link structure of sliding door for vehicle, the linear center rail link structure includes linear-shaped center rail mounted on side of car body corresponding to sliding door of vehicle and having striker formed at predetermined position in vertical direction. A base is configured to be moveable in length direction along center rail. A link arm has one end rotatably inserted into base. A slider rotatably connected to other end of link arm has outer side surface coupled to sliding door. A rotatable latch part provided at base is locked or unlocked from striker. Therefore, indoor invasion amount of center rail is minimized, thereby making possible securing indoor space. The linear center rail is used, thereby making possible improvement of design of vehicle. In addition, a link structure is provided, thereby making possible improving of operability of opening and closing of sliding door.

Abstract: A vent stop to be used on windows such as double sash windows allows desired ventilation while preventing the window from fully opening for safety reasons. The vent stop includes a lever having a notch for engaging the housing top lip while the stop is in a closed position and for disengaging the top lip when the lever is to be extended for terminating sash movement. Side apertures on the housing which receive axles on the lever are sized to allow both pivotal and longitudinal movement of the lever. A spring keeper maintains a coil spring in position while the lever moves from a closed to an open posture.

Abstract: A vehicle door comprising an outer door panel an inner door panel and a door Module. The inner door panel is joined to the outer door panel so as to define a door cavity between the inner and outer door panels. The inner door panel has an aperture providing access to the door cavity. The door module includes a plurality of carrier portions including a first carrier portion that holds at least one functional door hardware component and a second carrier portion that holds at least one other functional door hardware component. The plurality of carrier portions are mounted to the inner panel to seal the aperture thereby defining a wet side of the door module facing towards the door cavity and a dry side of the door module facing away from the door cavity.

Abstract: The present disclosure provides a door assembly for an animal enclosure. The assembly includes a door frame having a plurality of interconnected horizontal and vertical wires that define an opening for an animal to pass therethrough. The assembly also includes a door configured to move between an open position and a close position relative to the door frame. A latch is pivotably coupled to the door and includes a mechanism that is removably coupled to the door frame. The assembly further includes a first vertical wire and a second vertical wire of the door. A first guide wire and a second guide wire are coupled to the door frame. The first vertical wire is coupled to and moves along the first guide wire between the open and close positions, and the second vertical wire is coupled to and moves along the second guide wire between the open and close positions.

Abstract: An improved forced entry resistant sash lock comprises a housing, a shaft rotatably mounted thereto, a locking spring, and a locking cam and a delay cam rotatably and fixedly mounted to the shaft, respectively. The delay cam selectively engages and drives the locking cam between a locked position and an unlocked position. Locking spring biasing causes engagement with a locking cam opening to lock the cam when in the latch-locked position, with engagement to a depth permitting releasable detent engagement in a delay cam recess. Selective engagement and driving of the locking cam comprises a first portion of delay cam rotation being without driven locking cam rotation, and a second portion causing driven locking cam rotation from a retracted position into a protruding position. Selective engagement is by contact between corresponding protrusions on the delay and locking cams. Shaft/delay cam counter-rotation to unlock the latch proceeds in a reverse manner.

Abstract: A child safety gate has a flexible barrier sheet (102) which is moveable between an open and a closed position. The gate (100) also has a locking device (110) for locking the barrier sheet (102) in the locked position. The locking device (110) includes or is connected to a locking indicator which indicates a first state corresponding to the locked state of the locking device (110) and a second state corresponding to an unlocked state of the locking device (110).

Abstract: A locking mechanism for use with a window having a hinge coupling a sash to a frame includes a keeper and a locking lug. The keeper includes a generally planar base plate that is abutable to a surface of either the sash or the frame and two wings extending upwardly from the base, each of the wings having an upwardly and inwardly extending portion extending from the base plate and an inwardly extending portion extending inwardly substantially parallel to the base plate from the upwardly and inwardly extending portion. The two inwardly extending portions define a gap therebetween. The planar base further includes at least one self locating leg extending outward and coplanar with the base. The self locating leg adapted to abut a portion of the sash or the frame. Thus, the keeper is positionable without a fixture.

Abstract: A sheath for a window vent latch having a housing defining a slot sized to allow a vent latch to fit therein, and a spring attached to the housing for engaging the inside of a conventional window jamb. A method of seating a window vent latch in a window frame including the steps of providing a vent latch in a vent latch sheath having a housing and a spring, a window with a window frame having a window jamb, placing the vent latch sheath in the window jamb while allowing the spring to engage the window jamb, and adjusting the vent latch housing along the window jamb.

Abstract: A sheath for a window vent latch having a housing defining a slot sized to allow a vent latch to fit therein, and a spring attached to the housing for engaging the inside of a conventional window jamb. A method of seating a window vent latch in a window frame including the steps of providing a vent latch in a vent latch sheath having a housing and a spring, a window with a window frame having a window jamb, placing the vent latch sheath in the window jamb while allowing the spring to engage the window jamb, and adjusting the vent latch housing along the window jamb.

Abstract: A limiter system includes a base including a pin. A rocker is rotatably and translationally coupled with the pin. The rocker includes a first end including an abutment feature, a second end including a reset feature, and a slot including first and second slot ends and a slot track therebetween. The pin is translationally and rotatably received in the slot, and the pin is translational between the first and second slot ends. The rocker is configured for positioning between a first abutting position and a second resetting position. In the first abutting position, the abutment feature extends away from the base. In the second resetting position, the reset feature extends away from the base, and the abutment feature is nearer to the base than the reset feature.

Abstract: A wind lock for an overhead roll-up door, the wind lock having a first edge which is substantially straight and capable of extending substantially perpendicular vertically from a face of a door panel to which the wind lock attaches to, the wind lock including a second edge having an angled-beveled face, wherein the second edge extends at an angle from the first edge laterally across the face of an attached door panel is beveled with the face of the door panel so as to extend vertically from the face at an angle.

Abstract: A mechanism for closing sliding doors of furniture. The mechanism includes at least two rotatable closing elements, each associated with a respective door. A locking body is associated with the closing element for rotating and locking the closing element in either an open position or a closed position. The closing element also includes a locking portion that, through the rotation of the closing element, can pass from a first position in which the locking portion prevents the translation of the sliding doors of the furniture, to a second position which allows the translation of the sliding doors. The closing mechanism also includes a synchronization bar that makes the closing elements rotate as a unit, ensuring the simultaneous locking of the sliding doors in the closed or open position.

Abstract: A sliding door structure for a vehicle is provided, which includes a door panel member including a door inner panel and a door latch reinforcement, having a refractive part, and slidably provided in the sliding door; a pole installed at the refractive part of the door panel member; and a side panel corresponding to the door panel member, provided on the side of the vehicle, having an inserting hole into which the pole is inserted. It is possible to improve marketable quality and safety and ensure rigidity to increase performance of a vehicle body by preventing separation from a vehicle when a sliding door for the vehicle opens and closes.

Abstract: A door of a vehicle having a door inner panel, a door latch assembly mounted to the inner panel adjacent to a fish mouth opening, with the latch assembly having a lock lever; and a door trim panel mounted on the inner panel including a lock hole on a surface of the trim panel. A manual lock assembly has a mounting bracket, a button cap, a main shaft and a cam. The mounting bracket is mounted to the door trim panel. The button cap telescopically slides in the bracket and has an end extending through the lock hole. The main shaft slides in the bracket, engages with the button cap and extends into contact with the cam. The cam engages the lock lever to cause locking of the latch assembly when the button cap is pushed.

Abstract: A window safety and security device detects unauthorized movement of a double-hung window upon which the device is installed and communicates an alarm in response to the detecting. The device includes a single, high-powered suction cup with a housing configured to be removably attached to an inside glass pane of a first sash of the double-hung window formed with a first and a second sash, a first electrical switch including an actuator that toggles the switch contacts between an open or non-conducting state to a closed or conducting state when armed (powered) in a case where part of the window contacts and depresses the actuator. The device also includes a light or buzzer, which are activated when the first switch is caused to conduct. Preferably, a second electrical switch is included for “arming” and “disarming” the device.

Abstract: A vehicle door structure comprises a slide door panel for opening and closing a front region of a rear door opening of a vehicle body and a swing door panel for opening and closing a rear region of the rear door opening in cooperation with the slide door panel, swing door panel lock mechanisms for locking the swing door panel with respect to the vehicle body when the swing door panel is fully closed, and slidability setting mechanisms provided with the vehicle body. Slide rails are provided in upper and lower parts of the vehicle body, while rollers are attached to upper and lower parts of the slide door panel. The slidability setting mechanisms permit the rollers to be introduced to the slide rails only when the swing door panel is locked with respect to the vehicle body.

Abstract: A locking/unlocking device for a thrust reverser with sliding cover and adaptive nozzle is provided that includes a fixed pin secured to a fixed structure of the reverser, a first sleeve secured to the sliding cover and able to accommodate the pin, a second sleeve slidabiy mounted on the first sleeve, a third sleeve secured to the adaptive nozzle and slidably mounted on the second sleeve, first locking means able to lock the first sleeve with respect to the pin, second locking means able to lock the second sleeve with respect to the first sleeve, and third locking means able to lock the third sleeve with respect to the second sleeve.

Abstract: A transit window assembly for a vehicle includes a panel. A support frame is attached to the panel. An egress frame is removably attached to the support frame. A mounting frame is attached to the vehicle. The egress frame is linked to the mounting frame. A release actuator is attached to the egress frame. A latching mechanism is coupled to the release actuator latching and unlatching the panel relative to the mounting frame for movement of the panel relative to the mounting frame between open and closed positions. The latching mechanism is attached to the egress frame and mounting frame and retains the panel in two directions.

Abstract: A fenestration operation hardware assembly includes at least one latch mechanism and an operation hardware assembly configured for coupling with a panel slidable within a frame. The latch mechanism includes a latch bolt and a latch biasing element coupled with the latch bolt. An operator of the operation hardware assembly is remote from the latch mechanism and is coupled with the panel. The operator includes an operator interface feature movable between initial and operating positions. In the initial position the latch bolt is in a projecting position, and in the operating position the operator interface feature moves the latch bolt into one or more withdrawn positions. The operation hardware assembly includes a retention assembly for retaining the latch bolt in a withdrawn position.

Abstract: This invention provides an easily removable locking mechanism used on single hung, double hung, sliding window and sliding doors that will lock these items at various intervals. Two mounting bases are provided and designed to be interchangeable with each end of the locking mechanism and to provide ease of removal/installation of the locking mechanism in case of emergencies. The locking mechanism is comprised of two telescoping tubes with a permanent interlocking pin to hold the telescoping tubes at various intervals.

Abstract: A door support assembly for a motor vehicle is described. Generally speaking, the assembly includes a pin with a tapered section and being attached to the vehicle door, a passage with a mating surface for the tapered section fixed to the vehicle, and a latching mechanism configured to pull the vehicle door inward when engaged. When the latch mechanism is engaged, the assembly provides zero-gap with the door frame. The pin is tapered to a degree that it does not become wedged within the passage as the result of an explosive event.

Abstract: The present disclosure relates to a sliding door arrangement with an attenuation and retraction device facilitating soft-closing of a sliding door. The arrangement includes an attenuation and retraction device, which may be placed in the extension of a rail guiding and retaining the door, and a pin that extends from the door and interacts with the attenuation and retraction device. The pin may optionally be locked in a retracted position during mounting of the door in order to protect the pin from damage resulting from excessive side forces.

Abstract: A window has a frame and a movable sash mounted within the frame. The sash is formed from interconnected lineals bounding a glazing unit with at least one of the lineals being a sash rail made of a substantially hollow extrusion. A sash lock is mounted to the sash rail by means of a pair of toggle anchors projecting from the sash lock into the sash rail. A corresponding pair of lock screws is driven through the toggle anchors causing them to spread apart within the rail to form a mechanical lock that fixes the sash lock securely to the sash rail. More broadly, a component is anchored to an extrusion, which may be substantially hollow, with toggle anchors extending through holes in the extrusion and being spread apart within the holes by a screw.

Abstract: An actuator for moving a drawer and a cover for an opening in an interior panel part of a vehicle, which, for covering an opening formed in an interior panel part, can be moved between a closed state for covering the opening and an open state for uncovering the opening. The actuator includes a guiding device that guides the movements of the drawer out of and into the opening, a cover opening and closing device that opens and closes the cover, and an unlocking and locking device that unlocks and locks the drawer. The unlocking and locking device includes a bolting device that locks the drawer in a retracted state and an adjustment device that interacts with the bolting device and cover opening and closing device in such a way that moving the cover in its open state causes the adjustment device to release the bolting device with the drawer in its retracted state, so that the drawer can be moved out of the opening.

Abstract: A window latch for a sliding window having a sliding sash including a latch plate and a housing. The housing includes an engagement element movable relative to the housing from a locked position operatively engaged with the latch plate to an unlocked position disengaged from the latch plate. A handle is operatively coupled to the engagement element and movable from a first position to a second position in a first direction corresponding to the direction the sliding sash to which the handle is attached moves to an open position. The handle operatively moves the engagement element from the locked position to the unlocked position as the handle is moved in the first direction toward the second position.

Abstract: A track fitting garage door locking apparatus includes a male block with an internal housing and a key hole. A locking mechanism may be coupled to the internal housing and detachably coupled to the male block. A worm screw is coupled to the internal housing and passes through an opening of the guide track. A female block may be affixed to the guide track. The female block may include an axial bore aligned with the worm screw. A key may be removably interfitted within the key hole and thereby lock and unlock the lock mechanism such that rotational articulation of the male block causes simultaneous rotation of the male block, the internal housing and the worm screw. In this manner, the male block may be linearly reciprocated towards and away from the female block as the worm screw and the internal housing are simultaneously rotated in a corresponding direction.

Abstract: A vent stop is installed into a window/door to limit travel therein of a sash member, and being particularly adapted to permit ease of its installation, especially into a wooden door/window. The stop incorporates multiple retention features to inhibit the stop's removal, once properly installed. The retention features include a wedge-shaped protrusion located at a distal end of the stop housing, which engages the wood of the window opening when pivotally installed therein, to secure a first end of the stop. The opposite end of the stop may be redundantly secured. A first feature for securing the opposite end may comprise one or more arcuate flanges on housing side walls, flanges being adapted to unidirectional movement so as to permit its movement relative to the window opening during installation, but thereafter deterring counter-pivotal motion that would allow removal of the vent stop. A second feature comprises a deformable spring clip.