Abstract: A check mechanism for a motor vehicle door includes a housing secured to either the vehicle frame or the door and a check arm secured to the other one of the vehicle frame and the door. The door check extends into the housing through an opening in the housing. A pair of opposed guides are located within the housing and engage opposite sides of the check arm. Each guide has a generally V-shaped portion, in cross-section, engaging the check arm to generally form a line contact between the guide and the check arm. Spring members such as elastomeric springs bias the guides toward each other and the check arm. The guides and the check arm are adapted to resist movement of the closure relative to the vehicle frame when the guide engages predetermined locations of the check arm. When the door is moved relative to the frame, the guides slide along the exterior surface of the check arm.

Abstract: A structure of a hinge is provided. The hinge includes a main leave secured to a door frame and a subordinate leave joint with the main leave by a pintle and secured to a door. The main leave has a first helical surface in a lower knuckle and the subordinate leave has a second helical surface in a central knuckle engaged with the first helical surface. Further the first helical surface has a vertical end and a plurality of domes engageable with a vertical end and a plurality of semi-circular recesses. So that when the door is opened, it will gradually and slowly closed on its own gravity.

Abstract: A rotary damper is adapted to exert braking force to an upswung door, a toilet lid or the like when the door is closed and dampen the impact produced by the closing door by a damping force far greater than the one obtained by a conventional rotary damper using viscous shearing resistance. The rotary damper can also make the door open by a force far smaller than a conventional rotary damper. A movable shaft is rotatably housed in a casing and has a cylindrical shaft section including an arcuate non-resilient section extending from a peripheral edge thereof to an axial base line close to the other free peripheral edge thereof and an eccentric resilient section extending from the axial base line to the other free peripheral edge thereof with its eccentricity increasing as a function of the distance from the base line relative to the radius of curvature of the inner peripheral surface so as resiliently abut the inner peripheral surface.

Abstract: The present invention provides a structure improvement of spring hinge which mainly utilizes the tension adjustment stand, made of plastic composite material, to simplify the composition in order to achieve the purposes of reducing cost and the difficulties in assembling, yet to preserve the original intended functions, and an insertion portion extended from the end of the torque spring to insert a insertion hole formed at the tension adjustment stand to enhance the stability of the positioning of the torque spring and to abrade the torque produced by the torque spring to avoid broken the end of the torque spring.

Abstract: A damper device includes a casing, a rotor partly housed in the casing, a viscous fluid filled in the casing around the rotor, and a torque generator for generating a torque during a rotating stroke of the rotor. The torque generator includes a fluid torque adjuster for producing a relatively large torque in at least a terminal range of the rotating strokes in normal and reverse directions of the rotor.

Abstract: In a hinge device, right-hand spiral cams formed on a lower portion of a rotational shaft are engaged with right-hand spiral guides grooves, and left-hand inclinated guide protrusions are engaged with left-hand spiral guide grooves formed on an outer circumference of an elevating pipe. When the elevating pipe moves upwardly or downwardly, the load produced by hydraulic pressure can be applied uniformly to the shaft. Therefore, it is improbable to break out or cut out the spiral cam formed on the shaft, the spiral guide grooves on the elevating pipe and the guide protrusion on the stationary pipe. As a result, the hinge device has a relatively long life-time. Also, the hinge device can reduce or prevent damage in respect of life and property.

Abstract: The one-way hinge damper includes a cylindrical housing into a rotor is rotatably inserted. A gap is formed between the rotor and the cylindrical housing which is filled with silicone or a similar viscous fluid for damping the rotation of the rotor. The damping can be increased by forming longitudinal grooves or similar discontinuities in the interior surface of the cylindrical housing and longitudinal passageways on the exterior surface of the rotor. A clutch, to which the output shaft is attached, is biased against an end of the rotor by a wave spring. Both the clutch and the end of the rotor include complementary rotationally alternating ramped surfaces and flat (or longitudinally level) surfaces. Radially extending walls are formed between the higher end of the ramped surfaces and the adjacent flat surface.

Abstract: A door hinge and closure mechanism which includes a hinge unit and a closure unit is described. The hinge and closure units are integral in that a hinge plate of the hinge unit serves as a support for components of the closure unit. Generally, the closure unit applies a pre-load force on the door when the door is in a closed position. When the door is between a closed position and a neutral force position, the closure unit applies a substantially constant closure force on the door. Once the door is opened beyond a first lock position, the closure unit applies resisting forces to the door when the door which act as a deterrent to further opening of the door. Rather than being expanded during door opening as with known spring closure mechanisms, the spring of the above described closure unit is compressed. Compressing the spring is believed to result in a more smooth and constant closure force on the door, as well as extending the useful life of the spring.

Abstract: A door hinge assembly with a damper mechanism composing a cylindrical housing with caps on both ends, a shaft eccentrically mounted on the cylindrical body, and two plates mounted on the shaft. Two chambers are constructed with the above arrangement and both chambers are filled with oil-hydraulic fluid. When the shaft rotates with respective to the cylindrical body, one of the two chambers is compressed. With means of communicating the two chambers, a desirable dampening force is obtained. Bias spring(s) can be incorporated into this door hinge assembly to provide closing force, so this assembly functions as a door closer.

Abstract: A hinge structure of rotary door, including a mechanical rotary hinge and a buffering rotary hinge inserted in a hinge casing. An upper section of the rotary shaft of the buffering rotary hinge is formed with two opposite ring seats. A flange body is slidably fitted around the rotary shaft between the ring seats. An upper and a lower edges of the flange body and the ring seats are respectively disposed with corresponding projecting wedge edges and recessed wedge edges so as to lift or lower the rotary shaft along with the opening or closing of the door. A flange body is formed with an insertion hole and the ring seat is formed with a slide slot to be inserted in the casing. A piston body disposed with oil seal ring is fitted with the end of the rotary shaft to be slidably disposed in an oil cylinder. The piston body is formed with an annular groove communicated with a lower chamber by several through holes for fast opening the door.

Abstract: A hinge mechanism for a toilet bowl seat or seat lid has improved control of rotation due to torque exerted by a cam member working with a compression spring and slider, such that the torque varies depending on the angle of the seat or seat lid to the plane of the toilet bowl. The slider and cam member are mounted on a shaft having an axially directed oval hole in which a complementary shaped hinge pin is received to connect the seat and the seat lid to the mechanism. A stop mechanism prevents the shaft from turning beyond a predetermined angle.

Abstract: A method of adjusting an adjustable self closing hinge and the hinge which comprises providing an adjustable, self closing hinge. The hinge includes a tube with a hollow interior portion of circular cross section, a first end portion and a second end portion. A spring is disposed in the tube along its axis and has a spring end extending toward the first end portion and a second secured spring end extending toward the second end portion. A depression is provided at the first end portion of the tube extending into the hollow portion and a rotatable member is disposed within the hollow portion at the first end portion thereof and rotatable therein for adjusting the torque of the spring. The rotatable member is secured to the first spring end and has a flat wall portion at the end portion of the rotatable member opposing the spring and parallel to the axis, the wall and the rotatable member together forming a seat in the rotatable member.

Abstract: A rotary friction damper in a device for connecting a door to an adjacent structure such that the door pivots about an axis during opening and closing of the same and including a torsion spring operatively connected to the door and to the structure for movement about the pivot axis to store energy during opening of the door and to release energy to provide closing during closing of the door. The rotary friction damper is operatively associated with the torsion spring and has an axis of rotation disposed substantially parallel to the pivot axis for controlling the door closing speed. A damper housing rotates in response to application of input rotational force, and damper shoes within the housing are moved radially outwardly into frictional engagement with the housing. An arrangement of disc springs applies biasing force in a direction parallel to the axis of rotation of the damper, and the biasing force is directed to cause radial outward movement of the shoes.

Abstract: An assembly is arranged to include a tensioning means mounted within a housing structure. The assembly attaches to the head of an installed door hinge pin in order to store energy into such attachment to cause the door to close after having been opened then released, by reason of extended ends of the tensioning means interacting against the opposing door and wall.

Abstract: A floor-mounted door closure device comprising a floor trough insertable in a cavity of the floor and arranged to receive the closer casing from which a pivot pin projects, the device further comprising a cover plate covering the floor trough and closer casing. The cover plate is designed as a carrier for a material layer made of flooring material and is supported on the floor trough such that the cover plate is sunk in the cavity and the material layer carried by the cover plate is substanatially flush with the surface of the flooring material surrounding the cavity.

Abstract: A swingable door assembly and a hinge assembly for urging the swingable door assembly to a closed position is provided. The hinge assembly comprises a torsion spring which may be an elongate torsion rod, which may be preloaded with a predetermined amount of torsion force so that the associated swingable door assembly is urged to a closed position with respect to a casing, such as a refrigerated display case. The hinge assembly includes a ratchet pin connected to the torsion spring. First and second ratchet anchors may be mounted at a predetermined distance from each other on the ratchet pin. A fixed ratchet is secured to the ratchet between the first and second ratchet anchors.

Abstract: A double tubed door hinge for automatically closing a door comprises a two-tube base, a pair of torsion springs disposed to respective tubes therein and urged at two ends by a pair of first twisting members and a pair of second twisting members, and retained by a pair of lug members and a pair of axle rods. The improvement has been characterized in that an annular sleeve is placed between the first twisting member and the upper rim of the tube and a splitting small tube disposed into the first and second twisting members. In addition to that both the twisting members and the annular sleeve are made from reinforced plastic material and the splitting small tube is made from anti-friction material. So that the door hinge is durable and provides a smooth operation without causing any noise.

Abstract: A grab bar assembly for assisting persons between a seated and standing position is disclosed. The assembly includes a framework having a base plate and a housing. A pivot shaft and coil spring are mounted within the housing. The spring is affixed at one end with respect to the stationary housing and is connected at its other end to the pivot shaft. A swing arm is disposed over the housing and affixed to at least one end of the pivot shaft and a grab bar is connected to the swing arm. The grab bar is designed to permit a user to grasp the bar and pivot it about the stationary cylindrical housing between a stored position and an in-use position.

Abstract: A rotary friction damper in a device for connecting a door to an adjacent structure such that the door pivots about an axis during opening and closing of the same and including a torsion spring operatively connected to the door and to the structure for movement about the pivot axis to store energy during opening of the door and to release energy to provide closing during closing of the door. The rotary friction damper is operatively associated with the torsion spring and has an axis of rotation disposed substantially parallel to the pivot axis for controlling the door closing speed. The rotary friction damper is adjustable and variable. A mechanism operatively associated with the damper varies the resistance of the damper to movement of the torsion spring to produce a controlled uniform closing speed of the door and for reducing the resistance of the damper to movement of the torsion spring when the door nears the closed position to allow the torsion spring to close the door in an unrestricted manner.

Abstract: A hinge comprises a seat, an elastic pressing member, a pivoting member and a cam member. The seat is provided with a receiving space in which the pivoting end of the pivoting member and the cam member are pivoted such that the pivoting member is capable of turning on the pivoting end acting as a fulcrum, and that the cam portion of the cam member is pressed by the elastic pressing member so as to regulate the angle at which the seat and the pivoting member are caused to intersect.

Abstract: An automatic toilet seat lowering device integrated into a seat hinge assembly such that a raised seat, when approaching the last ten degrees of upward travel, is latched against the bias of a torsion spring. A rod connected to a flush handle unlatches the seat to allow the spring to bias the seat into an initial stage of descent. During descent, a leaf-type spring on the seat engages a catch on a lid to pull the lid into the descent. The speed of descent of seat and lid is controlled by friction between rotating and non-rotating brake discs mounted on an extension of an axle of the hinge assembly. The brake discs are compressed between a thrust cam driven by the descending seat and a compression spring mounted on the axle. Some of the brake discs are further configured to perform additional functions such as latching the seat in the raised position, and protecting the hinge assembly from excessive-force damage as well as enabling adjustment for differing seat thicknesses.

Abstract: A hydraulic buffer hinge for a door comprising a hydraulic buffer mechanism having a piston and a piston rod supported on a spring and received inside a hydraulic oil container to slowing down the return stroke of two swinging plates when the door, onto which the swinging plates are fastened, is closed.

Abstract: A detachable door lock having a door contact member which is secured to a door frame contact member. A spacer is provided between the door contact member and the door frame contact member so as to position the two members in contact with the door and the door frame, respectively. The door contact member and the door frame contact member, as well as the spacer, are releasably secured to the door hinge to maintain the door contact member in contact with the door and the door frame contact member in contact with the door frame. The door lock limits the amount of rotation of the door about the hinge and thus prevents entry through the doorway when the door is closed and the lock is attached to the hinge. The door lock may be adjusted so as to conform to various door and door frame configurations as well as to permit limited opening of the door.

Abstract: A door hinge with automatic returning means composed of; a male hinge member (1), a female hinge member (2), an inner sleeve (3), a transmission rod (4), main spring (5), a driving element (6), a buffer spring (7) and a retainer (8), in which, the male and female hinge members will take an angle of rotation in anti-clockwise when the door is proceeding to its open position, and in turn to effect the driving element and transmission rod to rotate in synchronized operation respectively. When the movement for driving element is being effected through a helical motion of external/internal thread engagement, and with the restraint imposed onto this element by outer sleeve of female hinge member, this element will move upward to press the main spring to retract.

Abstract: A one-way damper comprising a cylindrical outer frame 10 with one end closed within which is provided a cylindrical inner frame 20 in a state rotatable relative thereto, packing material G packed between said inner and outer frames, and when a relative rotation being caused between said both inner and outer frames the rotation of said frame of one side may be capable of giving resistance to the rotation of said frame of other side, and inside of said inner frame 20 being provided with a mechanism which may perform meshing and removal according to a direction of rotation of a rotary shaft 50 for effecting transmission and non-transmission of torque from said rotary shaft 50 to said inner frame 20.

Abstract: A hinge for a self-closing door includes a pair of hinge leaves having their respective knuckles joined to a hinge pin, one of the hinge leaves being fixed to the hinge pin and the other rotatable with respect to the same. A torsion spring is wound when the door to which the hinge is attached is opened. The torsion spring exerts a returning force which tends to keep the door in a closed position. Friction means is employed to arrest the closing of the door to prevent slamming. The friction means includes a first and second set of alternately interleaved friction plates, one set of which rotates while the other remains fixed when the door is allowed to close. The rubbing of the friction plates generates a retarding force which arrests the closing of the door. An adjusting member is also added to vary the amount of friction between the friction plates with the degree of opening of the door.

Abstract: A concealed self-closing hinge for mounting a door for swinging on a fixed frame. The door member of the hinge includes a cup which is concealed within a pocket formed in the inner side of the door. A durable plastic cam on the arm of the frame member of the hinge receives a hinge pin which is disposed in slots in the cup. A leaf spring is supported by the base of the cup and is bowed around a bridge to bear against and ride on the cam to effect the self-closing action and also to hold the hinge pin assembled in the slots in the cup.

Abstract: A self closing hinge having a single unitary spring element which functions to maintain the hinge in the open position and to move the hinge to the fully closed position after the hinge is partially closed. A unitary hinge spring having a base section and a ramp section joined by a resilient section which is typically a C shape in cross section.

Abstract: A door-closer hinge includes a first flap secured to a door, a second flap secured to a door frame, and an automatic closer as restored by a restoring spring and having a longitudinal casing secured to the second flap, in which a rotor vane fixed on a rotor having a needle passage formed in the rotor is operatively rotated with respect to a cylinder vane fixed inside a cylinder which is filled with a hydraulic oil and disposed around the rotor to thereby form a rotary-movement shock absorber for quickly opening a door when the oil is rotatably driven to contract the two vanes for quick flow of oil to the left, or for slowly closing the door when the oil is slowly returned to the right to expand the two vanes to allow oil flow merely through the smaller needle passage in the rotor.

Abstract: A double pivot hinge for vehicle doors includes a hinge arm pivotally interconnecting door and vehicle mounted hinge butts. A first and second latch means are alternately movable between latched and unlatched positions to either latch the hinge arm to the door mounted hinge butt for movement of the door and hinge arm as a unit to the 90.degree. open position or to latch the hinge arm to the vehicle mounted hinge butt for movement of the door relative to the hinge arm between 90.degree. and 180.degree. open positions. A detent means detents the first latch means in unlatched position during movement of the door between 90.degree. and 180.degree. open positions. The detent means is automatically released as the door moves from the 180.degree. position to a position immediately adjacent the 90.degree. open position to permit uninterrupted closing movement of the door.

Abstract: A hinge has a catch mechanism including a pressure spring which is arranged in a bush member of plastic material. When the hinge is closed the pressure spring acts through the bush member on a hinge link. A steel pin has a head which rests against a hinge link axle and is provided within the pressure spring.

Abstract: The swing control hinge disclosed is intended to control the rotational speed of a door that is tending to accelerate toward the strike as a result of spring loaded hinges. The hinge is intended to prevent slamming of the door while allowing enough speed to insure latching. The swing control hinge is housed in a hinge body that may be used as a third hinge. The hinge pin is made up of two cams that have cam parts on them which dissipate energy from conventional spring loaded hinges having helical spring or a block of rubber during the opening cycle of the door and the torsional force from the spring loaded hinges is dissipated in checking the door as it closes to keep the door from slamming.

Abstract: A furniture hinge for two housing parts has a housing mounted on one furniture part, a hinge arm mounted on the other furniture part, two pivotable hinge plates pivotally connecting the housing with the hinge arm, a spring which forms a locking device, a cylinder-and-piston unit having a piston pivotally mounted on the hinge arm and a brake cylinder slidably movable relative to the piston under the action of a cam lever mounted on one of the hinge plates and arranged to move the brake cylinder relative to the piston, wherein the sliding surface of the brake cylinder and/or the piston has a friction-increasing coating.

Abstract: Over-center hinge for cabinet doors, having a door-related part in the form of a recess-mounted cup in which the ends of inner and outer links are pivotingly mounted whose outer ends are pivoted on a supporting-wall-related part in the form of a supporting arm, a pressure piece biased by a spring being pivotingly mounted within the supporting arm on the inner link nearest the supporting wall and bearing against a counter-surface which during the hinge movement undergoes a change of position relative to the pressure piece such that the hinge, after passing beyond a dead center during the closing movement, is resiliently forced into the closed position.

Abstract: A crosslink over-center hinge having a supporting wall member and a door member which are joined together by a crosslink mechanism formed by two linkage arms coupled pivotingly together in their middle area, the end of one linkage arm being directly journaled on the supporting wall member and one end of the other being directly journaled on the door member, the other end in each case being coupled to the other hinge member for guidance on a curve in space. The hinge having an over-center mechanism is provided with a closing spring, which mechanism resiliently urges the hinge to the hinge end position at least in the vicinity of the closed position.

Abstract: A self-closing, non-rising hinge in cartridge form fits into a socket, generally, in the upper edge of a door. The hinge mechanism is completely enclosed within a housing and provides a strong returning force for closing a door. The hinge is reversible in that it can be mounted for opening the door either from the left or from the right. Where two doors are present, one above the other, as in refrigerators, the hinge may be inserted, in inverted position, into the lower edge of the door to minimize space requirements.

Abstract: A door-closer and hinge combination includes a pair of hinge plates adapted respectively to be fixed to a door and door frame, these plates respectively carrying a pair of extensions which are situated along a predetermined hinge axis and which are formed with coaxial bores, the axis of which coincides with the hinge axis, these bores receiving a hinge pin for hingedly connecting the hinge plates to each other. An elongated force-transmittingrod extends parallel to the hinge axis and is guided by a pair of guide sleeves carried by one of the hinge plates for movement parallel to the hinge axis. The force-transmitting rod carries a helical cam-follower which cooperates with a cam slot formed in the other hinge plate, which does not carry the guide sleeves, this other hinge plate preferably being fixed to a door so that upon opening the door the rod is vertically displaced.

Abstract: A door closer comprises: first and second cylinders provided with respective hinge pieces, the cylinders being rotatable with respect to each other about one and the same axis and being in contact with each other in the axial direction thereof; a support shaft inserted into the two cylinders substantially over the entire length thereof, one end portion of the support shaft being non-rotatably secured to the end portion of the second cylinder while the other end portion thereof being rotatably supported in the first cylinder; an intermediate rotary cylinder member provided rotatably with respect to the support shaft and the first cylinder between one end portion of the support shaft and the inner wall of the first cylinder; and a coil spring surrounding substantially the entire length of the support shaft in such a manner that both end portions thereof are non-rotatably secured to the intermediate rotary cylinder member and the lower end portion of the second cylinder, respectively.

Abstract: A snap-toggle hinge includes respective abutment members for attachment to an article of furniture and to a door thereof, the abutment members being pivotally connected together by means of a plurality of pivot arms, a toggle segment being pivotally mounted on one abutment member and provided with a projection receivable in the closed position of the hinge in an opening in a guide member pivotally connected to the other abutment member, the toggle segment being acted on by a spring urging the projection into the opening in the guide member in the closed position.

Abstract: A tension spring motor for use in a pintle or cartridge like container is employed to return hinged parts to an initial position after having been rotated to a second position. Door hinges are a typical example where a spring automatically returns the door to closed position after it has been opened. To vary the tension in the spring use is made of a pair of notched members housed within the pintle, one being a fixed member and the other being a movable member attached to the spring and rotatable to different positions of adjustment. A wrench hold in the movable member is accessible from the outside through a hole in the fixed member.

Abstract: A pair of leaf hinges have respective knuckles in axial alignment providing respective axially aligned chambers for reception of a pintle serving as a pivot for the hinges. The pintle is provided with a keying rib, and grooves in the respective knuckles and are in alignment only when the hinge is rotated to extreme position to permit insertion of the pintle and the keying rib into operative position within the knuckles. When the hinge is installed on a door and the door mounted on a frame, the door can not normally be swung to a position wherein the grooves are in alignment so that the pintle can not be removed from the hinge as long as the door stays in mounted position on the frame.

Abstract: A door closer hinge including a coil spring providing torque which is mounted in the cylindrical axis of the hinge for automatically closing the door on which the hinge is mounted and including a ready adjustment for the coil spring pressure.

Abstract: A cam rise hinge has a swingable strap portion which is cammed up relative to a stationary butt portion when a door on which the strap portion is mounted is swung towards its open position. A coiled wire torsion-compression spring is positioned and mounted so as to be compressed and simultaneously twisted when the strap portion is cammed up. This generates two different forces aiding each other and gravity in swinging the strap portion and door back toward closed position.

Abstract: A springless self-latching hinge is provided having a pair of hinge members pivotally connected by a hinge pin and formed of resilient material configured to snap the hinge closed and to releasably maintain the hinged closed. The first hinge member includes a pair of raised, spaced hinge pin receiving knuckles and a boss protruding toward the pin. The second hinge member has a hinge knuckle incompletely encircling the pin and forming a bearing sleeve. A portion of the bearing sleeve forms an exterior, concave cam which is compressed against the boss as the hinge is operated. The compression between the boss and the sleeve is a maximum just prior to closure of the hinge and is maintained at less than maximum when the hinge is fully closed. The hinge thus snaps closed after partial closure and is held releasably closed until sufficient effort is exerted to rotatably open the hinge against the force of the resilient members.

Abstract: An improved stop attachment removably connectable to a hinge assembly for adjustably limiting the degree of angular movement of a hinge assembly, the stop attachment including a housing assembly and a stop sleeve. The stop sleeve is movable with respect to the housing assembly for selectively positioning a first and a second stop surface formed on the stop sleeve with respect to a first and a second stop surface, respectively, formed on the housing assembly. In each selectively adjusted position of the stop sleeve and the housing assembly, at least one of the first stop surfaces of the stop sleeve and the housing assembly engages a first hinge leaf of the hinge assembly and at least one of the second stop surfaces of the stop sleeve and the housing assembly engages a second hinge leaf of the hinge assembly thereby selectively and adjustingly limiting the degree of angular movement of the first and the second hinge leaves.

Abstract: An auxiliary lock is disclosed which is intended to be used as a night lock in combination with the hinge of a conventional door. The device includes an elongated cross bar and a plurality of adjustable stop members which project from and are threadedly received in said cross bar and are adapted to engage the surface of the door and the door jamb or wall. The cross bar also carries a spring-loaded connecting means which is adapted to be engaged with the hinge pin of a conventional door hinge to thereby hold the cross bar in place on the hinge and the stop members in engagement with the door and door jamb. The bar is pivotally connected to the hinge pin by the connecting means so that it may be rotated 90.degree. to permit normal operation of the door, and in this regard secondary stop members are provided to function as normal door stop members when the device is in its inoperative or unlocked position.