Abstract: A sensor for an anti-entrapment system of a vehicle for preventing an object within an opening of the vehicle defined by a movable panel from being pinched by the movable panel includes a seal adapted to be mounted to a portion of the vehicle, an electrically conductive mounting carrier disposed in the seal and having a formed shape and operable to detect the object in the path of the movable panel and to generate a pinch sensor signal indicative of the object either touching the seal or in close proximity to the seal, and a controller for monitoring the electrically conductive mounting carrier, wherein the controller controls the movable panel to prevent the movable panel from pinching the object in response to the pinch sensor signal.

Abstract: A sliding door includes a door panel that has a first face, a second face that is opposite to the first face, and a top edge that defines first and second raised portions of the door panel and an open space that extends between the first and second raised portions. The sliding door includes a plurality of rollers affixed to the door panel by first and second mounting assemblies. Each of the plurality of rollers has an axis of rotation that is normal to the first face of the door panel. The sliding door includes a soft-close assembly secured to the first and second mounting assemblies at opposing ends thereof, such that the soft-close assembly is positioned within the open space between the first raised portion of the door panel and the second raised portion of the door panel.

Abstract: A doorsill assembly for an elevator includes a thin sliding member attached to the lower part of an elevator door for guiding opening and closing of the door along a guide groove on the doorsill, and a filling bar arranged in the guide groove so as to close an opening of the guide groove except for the sliding area of the sliding member.

Abstract: A movable storage system provides a repositionable storage location for livestock tack, including saddles and blankets. The system is particularly well suited for horse trailers and other types of transport trailers. The system includes a pivotably movable upright panel or wall that is fitted with horizontal storage arms or shelves for supporting various equipment and tack. The system can be repositioned at different angular positions relative to the upright stationary walls of the trailer, as desired. The system includes hinges coupling one side of the storage system to the trailer to provide a vertical pivot axis about which the system is pivotable. Latches are provided to secure the system at a desired angular position within the trailer. Storage compartments and gates may be included with the storage system.

Abstract: A retaining element for a side window of a vehicle, includes a first securing section and a first contact section connected thereto for securing to a first surface of the side window, a second securing section and a second contact section connected thereto for securing to a second surface of the side window, wherein the first and second securing sections are connected to one another opposite the contact sections via a hinge section such that the first securing section together with the first contact section and the second securing section together with the second contact section is pivotable relative to one another, whereby the retaining element is openable and closable. In the closed state, the securing sections are in surface contact with one another and, together, are suitable for securing to the vehicle and the contact sections are suitable for securing to two opposing surfaces of the side window.

Abstract: A frame structure includes a frame body, a corner connector and roller mechanism arranged in a splice of adjacent side frames at a bottom of the frame body, and a guide mechanism clamped to a top of the frame body. A glass positioning slot is disposed on a first side of an inner side wall of a side frame of the frame body. A mounting slot is disposed on a first side of an outer side wall of the side frame of the frame body and used for fixing the guide mechanism or the corner connector and roller mechanism. The glass positioning slot is adjacent to the mounting slot along a lengthwise direction of the first side of the inner side wall. A sliding door is further provided.

Abstract: A multi-panel shower door assembly includes door panels supported near the top ends of the door panels for sliding movement relative to one another within a door frame. The door panels are supported such that bottom ends of the door panels are spaced above the bottom wall of a sill member to define an unobstructed free space between the bottom wall and the bottom ends of door panels. The sill member includes a sidewall extending upwardly from the bottom wall and an elongate, downwardly opening channel extending along an upper edge of the sidewall. A first rail member near the bottom end of the first door panel has an upwardly extending lip configured to be received in the channel to facilitate sliding movement of the door panels while inhibiting tilting movement of the door panels.

Abstract: An elevator includes at least one elevator car driving in an elevator shaft driven by an elevator drive. The elevator car has at least one car door and a door sill at the bottom of the car door, which door sill includes at least one groove, in which the car door is guided, in which groove at least one trash hole is located to prevent trash from accumulating in the groove, whereby the elevator car further includes a toe guard which extends downwards from the door sill. The trash hole is connected with a first upper end of an air channel extending downwards from the door sill and includes at least one channel portion extending with a direction component in a horizontal direction and/or having an opening directed sideward, which air channel is connected with the toe guard. The elevator leads to a reduced noise generation in the region of the door sill, particularly in elevator cars traveling with a high speed.

Abstract: A modular wall assembly includes a frame assembly that includes at least one vertical frame member and at least one horizontal frame member, wherein the frame assembly is configured to define a door opening, a door member slidably operable between a closed position, wherein the door member is at least partially located within the door opening, and an open position, wherein the door member is at least partially removed from with the door opening to allow ingress and egress through the door opening, and a support assembly that includes a sliding support member that slidably supports the door member between the open and closed positions, and at least one mounting arrangement coupling the sliding support member, wherein the at least one mounting arrangement allows vertical adjustment of the sliding support member with respect to the frame assembly.

Abstract: The sliding door assembly has a non-metallic frame formed of extrusions of solid cross-section and a pair of non-metallic sashes slidably disposed in the frame to move laterally between a closed position and an open position relative to frame. The floor of the sill extrusion is sloped rearwardly and longitudinally downwardly toward a notch to direct water thereto for draining out of the frame. The frame can be dropped into a commercial refrigeration cabinet and each sash is removably mounted in the frame.

Abstract: A wall jamb for a showering enclosure includes a plurality of legs configured to receive the shower door panel therebetween, a base connecting the plurality of legs such that the wall jamb is generally U-shaped, and a pressure sensitive adhesive disposed at an exterior surface of the base. The pressure sensitive adhesive is configured to adhere to a wall of the showering enclosure. The plurality of legs and the base are formed of a resilient material.

Abstract: The present invention relates to furniture and devices and a system for forming working areas within open spaces. More specifically, the present invention relates to furniture, devices and systems that can be used to create individual working areas and offices in an open space with the ability to create privacy similar to an enclosed office without constructing permanent walls and partitions. The invention includes a main support frame/structure supported off the floor which receives and connects to component panels also supported off the floor which function like office walls. The configuration of the resulting compartments is adjustable using different sized panels and by positioning panels and opening in different locations. The system has an open top configuration with an upward lighting system integral to the top support member and inside it to provide upward lighting to the space(s).

Abstract: A shower door assembly is disclosed comprising a top frame and a bottom frame; a first movable glass door having at least two first roller units at a top end of the first movable glass door and at least two second roller units at a bottom end of the first movable glass door; and a second movable glass door having at least two third roller units at a top end of the second movable glass door and at least two fourth roller units at a bottom end of the second movable glass door. The first and third roller units are slidably engaged with the top frame, and the second and fourth roller units are slidably engaged with the bottom frame. At least one of the first roller units is located between the third roller units and pressed by a first pressing device provided on the third roller units, and as a result at least one of the second roller units is located between the fourth roller units and pressed by a second pressing device provided on the fourth roller units.

Abstract: A sliding door system comprises a door made of a glass panel. Roller units are connected to the door and project from a plane of the door. A structural transom has a glass panel body with main surfaces of the glass panel body positioned generally vertically. The glass panel body has at least one slot defined therein having a lower edge surface and an upper edge surface. The slot has a height for receiving a portion of the roller units between the lower edge surface and the upper edge surface, and a length for allowing a translation of the door to open and close an opening by movement of the roller units in the slot.

Abstract: A sliding window assembly for a vehicle includes a fixed panel and a sliding panel moveable relative to the fixed panel between an open position and a closed position. An elongated member is connected to the fixed panel and defines a channel extending along a longitudinal axis from a first end to a second end. The channel receives the sliding panel for movement of the sliding panel relative to the fixed panel. A rail is disposed in the channel along the longitudinal axis and is spaced along the longitudinal axis from the first end. The elongated member defines a drain hole molded into the elongated member in the channel. The drain hole is defined between the rail and the first end of the channel along the axis for draining water from the channel.

Abstract: A sliding door includes slidable panel. A first weather stripping member is secured to a portion of the slidable panel. A header and a sill each include a track having a length defining a longitudinal axis. At least one of the tracks includes a first ramp and a second ramp spaced from the first ramp along the longitudinal axis. The slidable panel moves along the longitudinal axis from an open position to a closed position. The slidable panel is moved from a lowered position to a raised position on both the first ramp and second ramp as the slidable panel is moved to the closed position. The weather stripping member is engaged against one of either the header or sill when the slidable panel is in the raised and closed position. The weather stripping is disengaged from the header or sill when the slidable panel is the lowered and open position.

Abstract: Door arrangement, more particularly a sliding door arrangement of an automatic door of an elevator or of a building, which comprises a door panel, and a guide arrangement for controlling the path of movement of the door panel, which guide arrangement comprises at least one guide connected to the aforementioned door panel, and a guide rail, closely along which the aforementioned guide is arranged to move, and from which guide rail the guide takes lateral support force with respect to the longitudinal direction of the guide rail. The guide comprises a first guide roll for taking the support force from the guide surface of the guide rail on the side of a first side of the guide, and a second guide roll for taking support force from the guide surface of the guide rail on the side of a second side of the guide.

Abstract: A system for reducing an effective weight of a horizontally sliding object, wherein the object such as a door or window is retained in a track that allows substantially horizontal movement along a predetermined path. The door has an upper surface with a longitudinal cavity therealong, a metallic channel is disposed within the longitudinal cavity, and the channel receives a plurality of permanent magnets. The system also includes an elongate strip coinciding with the predetermined path and positioned adjacent the upper surface of the door. An adjustment mechanism is also provided for releasably adjusting the distance between the magnets and the elongate strip.

Abstract: Disclosed is an easy-to-construct window apparatus including to assure easy construction and superior drainage ability. The window apparatus includes a window frame fixing unit including a bottom plate, vertical plates formed at lateral ends of the bottom plate and a rack plate formed at each vertical plate, a window frame support unit including a seat plate on the rack plate, a support plate configured to be supported on the bottom plate, fastening pieces protruding from the seat plate, and a holding groove formed in each fastening piece, a rail unit including a horizontal plate provided with a rail and a coupling piece, and a holding ridge formed at the coupling piece so as to be coupled with the holding groove, a window drive unit including a press-fit structure to be press-fitted into a window, and water discharge holes perforated in the aforementioned units.

Abstract: A door is secured in spaced relation to a wall panel by a support assembly which includes a tubular housing secured to the wall and an elongate guide bar secured to the door at its bottom. The door is retained, at its top, between extruded aluminum abutments which allow the door to slide with respect to the wall panel, but prevent the door from pivoting about the guide bar.

Abstract: A roller for sliding a movable panel includes a housing and a plurality of wheels positioned within the housing. The housing is positionable in a space defined between a bottom surface of the panel and a channel which receives a guided edge of the panel.

Abstract: A flexible door panel cold storage door system incorporates a flexible movable door panel having an internal support frame assembly and the door panel has a plurality of gasket sections removably attached to a cold space surface of a door panel jacket with each gasket section having at least one ferrous gasket target and the gasket sections are aligned and cooperate with a plurality of electromagnets that are mounted in a doorframe assembly when the door panel is in a closed position. The electromagnets are mounted in wells in the doorframe assembly and are powered on when the door panel is in the closed position and the wells are interconnected by a ventilation channel that conducts air heated by operation of the electromagnets through the ventilation channel and into and through a bottom sweep assembly of the door panel in a closed loop.

Abstract: An office partition system including at least first and second panels and a sliding privacy door guidably supported against the first panel via an elongated horizontal guide. The elongated horizontal guide has a channel that receives the privacy door and a mounting structure for mounting the guide to a horizontal track of the first panel. The elongated horizontal guide has a width that is substantially equivalent to the width of the first panel. The privacy door includes wheels that may support the entire weight of the privacy door. The privacy door may move from a first, open position allowing access to an interior space of the office partition system via an opening to a second, closed position restricting access to the interior space via the opening.

Abstract: A sliding door assembly has a frame with a movable panel and a fixed panel. The movable panel has a pair of rollers that roll along a header located above the panels with the rollers attached to the movable panel via posts that pass through a channel on the header. The posts pass through a curved section of the channel whenever the movable panel is proximate its closed position and a straight section of channel when the movable panel is traveling laterally. The movable panel presses against a gasket located on the frame components surrounding the movable panel wherein one or more latches press the movable panel against the gasket whenever this panel is in the closed position. Valve is positioned within a weep hole on the threshold in order to prevent water from seeping into the building via the bottom of the door assembly.

Abstract: A roller door system includes a roller assembly configured to mount directly to a panel and move along a complementary upper guide. In particular, the roller assembly can be coupled to a coupling member embedded in the panel. The roller assembly, when coupled with the panel, can provide a smooth gliding motion for the panel.

Abstract: A movable carriage assembly for a door track or window track is adapted to support a door or window. The carriage assembly includes a lower carriage removably joined to an upper carriage, forming an elongate gap there between which is constructed and adapted to provide a sliding surface element for a track dust cover. When the carriage assembly moves along the track, the dust cover moves through the gap of the carriage assembly and over the sliding surface element whereby the dust cover is caused to disengage from the track and re-engage with track after the carriage assembly has passed. There is also disclosed a method of installing the carriage assembly in a window or door opening for a door or window.

Abstract: An elevator door guide (16) includes at least one elevator door guide member (30, 32) having a first channel (18) and a second channel (64) each for at least partially establishing a direction of door movement. The first channel (18) is open in a first direction (24) and the second channel (64) is open in a second direction (66). In one example, the channel (18) at least partially establishes a direction of door movement and a passage (26) extends through the elevator door guide (16) in a direction (28) that is transverse to the direction of door movement.

Abstract: The invention relates to a regulation mechanism for built-in sliding doors of the type comprising a sliding leaf (4), a guide (6) in the lower part of said sliding leaf (4) and a fixed stop (16) inside said guide (6), comprising a cover (1) fixed at the end of the sliding leaf (4), a mobile stop (2) slidable through the inner part of the guide (6) situated between the cover (1) and the fixed stop (16), and an adjustment screw (3) traversing the cover (1) and the mobile stop (2) by means of which the relative position between both elements (1) and (2) is regulated.

Abstract: The present invention provides a rail system for a horizontally sliding door or window having a construction casing; and at least one slideable panel. The system includes, at least one track from which or on which the panel slides. Each track includes, at least two track segments whose length is shorter than the width of the slideable panel(s). The track further includes a track segment fastening mechanism for allowing the track segments to be removed and re-inserted into the construction casing; and a spacer disposed between adjacent track segments. The total length of each spacer and one of each of its adjacent track segments is greater than the width of the slideable panel(s).

Abstract: This invention claims a steel elevator door guide, which contains a reinforcement beam, an attachment beam, a guide carrier and a glide. The attachment beam connects at the bottom end of a elevator cab or corridor door. The invention is held securely clamped together by fasteners, welding or glue. To further protect against any lateral movement imposed onto an elevator door, one or more frictional surfaces is engraved at contact points between individual components and safety rail(s) are provided. A noise reducing, nylon glide is attached to the guide carrier using the same fasteners as those supporting the reinforcement beam. These components are intended to prevent lateral motion of an elevator cab or corridor door even if a severe lateral pressure on the elevator doors has caused the glide to severely flex or fail.

Abstract: A lower portion of a slide door of a windshield for a weighing apparatus is located in a guide groove of the main body of the windshield, along which guide groove the slide door opens and closes. A protrusion is protruded in a lower portion of the slide door and the protrusion engages an upper face of a frame in which the guide groove is formed. The protrusion supports weight of the slide door, and is slid on the upper face of the frame while the slide door does not come into contact with a bottom surface of the guide groove, thereby opening and closing the slide door.

Abstract: Door sill frame assemblies and sliding door assemblies comprising the same are disclosed. In one embodiment, a sill frame assembly for a sliding door includes a first engaging surface capable of attaching with a sliding door and allowing lateral reciprocating motion of the sliding door and a second engaging surface, wherein along at least a first portion of the second engaging surface is attached a sill member and wherein along at least a second portion of the second engaging surface is attached a fixed-panel door, wherein the sill member includes a channel having a weather-strip extending upward from the channel, the weather-strip having a first open state for substantially preventing water and air intrusion past the sliding door when the sliding door is in a closed position and a second compact state for allowing accessibility of a wheelchair through an opening when the sliding door is in an open position.

Abstract: A door roller system is disclosed. The door roller system comprises a first housing including at least one generally vertical side member having at least one slot; a base slidably coupled to the first housing and having at least one projection that extends at least partially through the slot; and at least one wheel coupled to the base. The projection on the base is configured to slide within the slot on the first housing as the base is moved relative to the first housing.

Abstract: A horizontally sliding door includes a resilient retention system that helps hold a door panel tightly against its seals when the door is closed, and resiliently releases the door panel when an external force displaces the panel beyond its normal path of travel. If the door panel is displaced off its normal path, the resilience of the retention system or simply opening and closing the door automatically returns the panel back to normal operation. The resilient retention system can be installed off the floor, so the system avoids creating a tripping hazard and avoids being damaged by nearby vehicles.

Abstract: The bottom guiding device according to the invention for telescoping elevator car and/or landing doors with at least one fast-moving door (3) and one slow-moving door (1) moving parallel to and within a small distance from a threshold plate (5) of a car and/or landing door respectively, is characterized in that it implements a threshold plate (5) on the car and/or landing side, formed with at least one lower edge parallel to the travel path of the doors (1, 3) and forming a bottom guide track (31) for the doors; a bottom plate (11) integral with the slower door (1) and extending with a small clearance below the faster door (3), provided on the threshold side with a guide track (13) parallel to the travel path of the doors (1, 3) and accommodating a guide element (19) integral with the faster door (3) and close to its rear lower end; at least two distant guide elements (25) integral with said bottom plate (11) on the slower door and accommodated on said (31) on the threshold plate so as to slide freely; and at

Abstract: A sealing system connects a panel to a frame and includes an anchor and a pair of opposing docking collars. The anchor extends from the frame or panel, and the opposing docking collars are disposed within a guide portion in the other of the frame or panel. The sealing system has an unlocked configuration and a locked configuration. In the unlocked configuration, the panel moves relative to the frame along a plane substantially parallel to a longitudinal axis of the anchor. In the locked configuration, the anchor is positioned between the docking collars, and the anchor is engaged by the docking collars to prevent movement of the panel relative to the frame along the plane.

Abstract: A combined sealing system for connecting a panel to a frame includes a first sealing system and a second sealing system. The first sealing system connects a first surface of the panel to a first surface of the frame, and the second sealing system connects a second surface of the panel to a second surface of the frame. The combined sealing system has an unlocked configuration and a locked configuration. In the unlocked configuration, the panel moves relative to the frame along a plane substantially parallel to a longitudinal axis of the first or second surfaces of the frame. In the locked configuration, each of the first and second sealing systems separately prevent movement of the panel relative to the frame along the plane.

Abstract: A closing system for moving a sealing system between an unlocked configuration and a locked configuration includes first and second inner control members and first and second outer control members. The sealing system connects a panel to a frame and includes an anchor disposed between first and second opposing docking collars. The first and second inner control members are respectively connected to the first and second docking collars, and the first and second outer control members are respectively disposed proximate to the first and second inner control members.

Abstract: A sliding door system includes a sliding door having an upper roller assembly disposed atop a portion of the door's frame, a lower wheel assembly disposed at a bottom portion of the frame, a channeled upper track, a lower track having at least one convex longitudinal rail configured to receive the lower wheel assembly, and one or more optional panel divider strips. The lower wheel assembly includes a vertical spine having a transverse shaft coupled to a bottom portion thereof, a lower wheel that has a concave contact surface and is rotatably coupled to the transverse shaft, and a transverse latch member disposed vertically below the lower wheel to slidably latch the lower wheel assembly to the lower track as the lower wheel rotates matingly on the convex longitudinal rail.

Abstract: A sliding door comprising a door leaf and a frame profile holding the door leaf. The frame profile includes lateral frame profiles and a lower frame profile. Intermediate pieces are disposed in a channel of the lower frame profile and in channels of the lateral frame profiles to connect the lower and lateral frame profiles together. Roller assemblies are disposed in the lower frame profile and are adjusted via screws which extend through the intermediate pieces.

Abstract: The present invention provides a new sliding assembly for a sliding closure. The present invention is constructed of two metal profiles mounted on each side wall of sliding closure and guiding bars for sliding on said rail. The profiles design includes a rail which length, is adjusted to the sliding closure height. The lower sliding bar is attached to a roller, which slides along the lower track of the closure. The second sliding bar is attached to the guiding bar for sliding along the upper track of the closure. An elastic stretching means connects between the lower sliding bar and the profile.

Abstract: A gliding door system employs a latch with a gear and pinion mechanism for smooth opening of a door. A lower door push member is driven with the opening of the latch, so as to urge the door open by pushing at a lower end thereof. The door suitably is carried by adjustable wheels that ride on a rail like member, wherein at a closed position, the rail is slightly depressed, to lower the door slightly at the closed position, to bring lower seals into engagement with seats.

Abstract: A door or wall element comprising castor carriers (21)having castors (12)which are movable on a runner (13) and securing members (28) having securing hooks (31, 32) which are disposed in the runner (13) and prevent the castors (12) from undesirably lifting off from the runner (13). The securing members (28) are mounted rotatably on castor axles (23) of the castors.

Abstract: A door adjusting mechanism enables adjusting a position of a door moving in a track. The adjusting mechanism includes a truck member secured to the door and having moving structure engageable with the track. A connector connects the truck member to the door and includes cam structure for adjusting a position of the door relative to the truck member, thereby adjusting a position of the door relative to the track. In one arrangement, the truck member supports an adjuster bolt, and a connector includes an offset aperture that fits over the adjuster bolt. A nut is engageable with the adjuster bolt to secure the connector to the truck member. A position of the door in the track is adjusted by simply rotating the connector.

Abstract: A sliding door assembly includes at least three frameless panels that are slidably installed to form a door to an enclosed tub or shower area. Each frameless panel is gripped at a top by at least two roller assemblies, and the roller assemblies are slidably suspended from a header that supports the frameless panels via the roller assemblies. The sliding door assembly also includes a guide assembly that has at least three tracks, wherein each frameless panel is guided by a corresponding one of the tracks.

Abstract: A device for the synchronized actuation of sliding doors, provided for two sliding doors moving indistinctly in the same plane or in two planes forming any angle, consisting of two pairs of cogwheels (8-8?) and (9-9?) between which there is arranged, inside of each pair, an also cog belt (10-10?), a connection part (13-13?) fixed to the corresponding suspension grip (6-6?) of the respective sliding door being joined to each one of these belts. Joined to the two neighboring cogwheels (9-9?) there are respective cogwheels (18-18?) of a larger diameter, directly meshing with one another, to synchronously transmit motion from one cog belt (10-10?) to the other, cogwheels (18-18?) which are kept joined by means of parts (20) bridging their shafts (19-19?) and maintaining the drive transmission both when the doors are coplanar and when they form any angle.

Abstract: The present invention essentially comprises an upper assembly having a securing receptor with a guide track, a lower assembly having a securing receptor with a guide track, a bi-fold partition having a top portion and a bottom portion wherein the top portion is received by the upper assembly and the bottom portion is secured by the lower assembly. In a preferred construction, the bottom portion of the partition further has a cooperatively attached pin or foot bolt that is generally received by the lower assembly. When the partition is secured in such a fashion, the partition forms a compartment often referred to as a tack room. To release the partition, the pin is pulled in upward direction and the partition slid out of the lower and upper assembly wherein the partition can be folded and stored along the sidewall of the trailer and in essence removes the tack room sub-compartmentalization.

Abstract: A shower door system has a compression mounting system including a horizontal header and curb and upright jambs. The header and curb each include one or more rails mounted above and below the door via associated expansion assemblies. These assemblies have threaded shafts that engage one or more nuts mounted to the rails such that turning the shafts applies compressive forces against opposing end walls of a shower enclosure.

Abstract: A by-pass shower door system has a compression mounting system including a horizontal header and curb and upright jambs. The header includes a header rail with parallel tracks for slidably mounting the door panels and a threaded header expansion assembly. The curb is mounted beneath the header and includes two curb rails and a threaded curb expansion assembly coupled to the curb rails. The compression assemblies have threaded shafts that engage nuts mounted to the rails such that adjusting the compression assemblies (by turning the shafts) applies a compressive force on opposing end walls of a shower enclosure to mount the header and curb. A cap overlapping the header rail conceals the header expansion assembly. A center guide, having parallel tracks for bottom ends of the door panels, conceals the curb expansion assembly.

Abstract: An elevator door sill assembly for use in elevator systems that have sliding doors. The door sill assembly comprises a sill plate, a support sill located below the sill plate having a rail that presents an inboard sliding surface and an outboard sliding surface. The assembly also comprises a first guiding surface that engages that inboard sliding surface and a second guiding surface that engages the outboard sliding surface. The assembly prevents that bottom of the elevator door from swinging while the door slides opened and closed. The sill assembly and guide system may be used with either hoistway doors or elevator car doors.