Abstract: An adjusting device includes an upper and a lower ring element connected with each other by a pivotal device disposed therebetween, the pivotal device has two pairs of rods cross-pivotally engaged, the upper ring element has a plane portion which has a shoulder formed on an under side, the adjusting device includes a movable element engaged to one pair of rods of the pivotal device, a base engaged to the under side of the plane portion and an operation element pivotally engaged to the base. The movable element has a serrated portion defined in an under side and the base has an opening defined therein corresponding to the serrated portion of the movable element.

Abstract: An electrical toy baby cart includes two handles. Two front frames and two rear frames are respectively and pivotally connected to the bottoms of the handles. A front wheel holder is fastened to the bottoms of the front frames and supported on two front wheels, and a rear wheel axle is fastened to the bottoms of the rear frames and supported on two rear wheels. A battery box arranged between said front and rear frames. A transmission gear box, a control box electrically connected to the battery box and having a motor controlled to drive the transmission gear box, and two transmission wheels driven by the transmission gear box to move the electrical toy baby cart are provided within the front wheel holder. When the handles are pressed downward and then turned downward toward the front frames, the top projecting block at the top end of each rear frame is moved away from the top projecting block at the top end of either front frame for permitting the electrical toy baby cart to be collapsed.

Abstract: An adjustable height mechanism for use in devices employing a collapsible scissors frame supporting an object is disclosed having a pair of pawls secured to the sliding leg of the scissors frame and slidably mounted onto a pair of guide rails. A central channel is positioned between the guide rails and receives a guide member extending from the leg to provide additional tracking and lateral stability during movement of the leg. A pair of spring biased, pivoting ratchet arms are mounted to the supported object and include a series of ratchet stops and a finger grip. The ratchet arms engage the pawls to restrict movement of the leg of the scissors frame in one direction while allowing ratcheting free movement in the opposite direction. The finger grips can be used by the user to squeeze the free ends of the arms together and release the ratcheting engagement with the pawls to provide height adjustment of the object supported by the scissors frame.

Abstract: An umbrella stroller includes two side frames, each having a main side tube and a rear side tube pivotally connected to the main side tube at an intermediate portion thereof; a bottom scissor frame foldably connecting the side frames together; two upwardly inclined support rods pivotally connected at rear ends thereof to lower ends of the rear side tubes, and pivotally secured to a lower end of a respective main side tube; a rear seat supporting assembly supporting a fabric seat between the pair of side frames and above the bottom scissor frame, the rear seat supporting assembly including two horizontal seat support bars, each hinged at a rear end thereof to an intermediate point of a rear side tube, and extending forwardly therefrom with a substantially horizontal orientation in the open configuration, a connecting bar pivotally connected between each horizontal seat support bar and the respective upwardly inclined support rod, and a back support; and a front seat supporting assembly for supporting a fabric

Abstract: A tilting and laterally folding wheelchair design is described in which a tilting mechanism incorporating a pivoting action at both the front and back of the chair is provided so that as the chair is tilted the center of gravity of the occupant is maintained relative to the wheelbase. A lateral folding device, which incorporates X-cross members free at their upper ends, is stabilized by link members which are pivotally mounted at their outer ends, so as to provide room for the chair to be folded laterally.

Abstract: A locking apparatus is operative to selectively prevent the folding of a wheelchair of the type having a pair of centrally pivoted cross braces under the wheelchair seat. A bracket member is provided at each end of a pin which is adapted to constitute the pivot for the cross braces. An elongate bar is hinged at one end to one of the brackets and is adapted to be swung into a position between the cross braces so as to obstruct folding. A locking device operates between the other end of the bar and the other of the brackets for selectively retaining the bar in obstructing position.

Abstract: Disclosed herein is a height-controllable childcare chair (1). This chair first comprises a pair of side walls (6) which are located on both sides of a seat portion (2). A pair of horizontally extending side bars (8), which are parallel to each other, are fixed to the respective side walls (6). A pair of first leg members (11) are rotatably mounted on the respective side walls (6). A pair of sliders (14) are mounted on the respective side bars (8) to be slidable along the side bars (8). A pair of second leg members (29) are rotatably mounted on the respective sliders (14). Respective intermediate portions of the second leg members (29) are rotatably coupled to respective intermediate portions of the first leg members (11). Wheels (13, 31) are mounted on respective lower end portions of the leg members (11, 29). A plurality of engaging holes (9a-9h) are longitudinally distributed along each side bar (8).

Abstract: A collapsible stroller frame adapted to carry variously sized and shaped infant type seats. The frame includes a pair of longitudinal elements having handles at one end and wheels at the other. A strap connects between the longitudinal elements in a rearward portion of the erect frame. A sling element is positioned in a forward portion of the erect frame and is possibly supported by an additional support member connecting between the longitudinal elements. The sling accommodates the front portion of an infant seat and the strap supports the rear portion of the seat. The frame may also include additional strap elements to secure the seat to the frame.

Abstract: A multi-purpose hand truck having an elongated frame (1) possessing at one end two wheels (9) as well as toe plate (7) projecting at approximately 90.degree. from the frame, and at the other end possessing a handle arrangement (3); in a further refinement the truck can be converted into a utility table by means of a table top (10) and a support stand (5) which are attached to the frame (1). The table top (10) is on the one hand preferentially pivotably attached to the support stand (5) and on the other hand it pivots and is guided longitudinally in the side members (2) of the frame (1). For this purpose trunnions (14) projecting transversely from the table top (10) engage in grooves (15) on the inner surfaces of the side members (2). When the table top (10) is folded out, the toe plate (7) can be pivoted through the frame (1) into a horizontal position (7") so that its underside faces upwards.

Abstract: A stroller carseat apparatus is set forth wherein a carseat includes a scissor-like underlying framework including a pivotally mounted wheel proximate each corner of the framework securable in a first locked upper position to a second lowered extended position. An electrical circuit is included within the framework wherein an illumination source proximate the uppermost portion of the seat is illuminated upon completion of a circuit effected by the locking of the wheels in the second lowered position.

Abstract: A folding wheelchair with an improved frame and suspension system provides a smooth and cushioned ride over uneven terrain. The rigid frame of the wheelchair has a double "X" configuration of cross-tubes to improve frame strength without adversely affecting the foldability of the frame. The suspension system of the wheelchair comprises a pair of suspension wings pivotally mounted to the chair frame by a pivot block. The rearward end of the suspension wing is rotatably attached to the wheel axle. The frontward end of the wing engages a spring or shock absorber which, in turn, attaches to the chair frame. The independent suspension of the wheels and relatively long pivotal axis of the wing from the wheel axle provides for better maneuverability of the chair and for a more comfortable ride. Additional cushioning of the occupant during travel over uneven terrain is provided by the shock-cushioning mechanism of the spring or shock absorber.

Abstract: A baby carriage has front legs, rear legs disposed to cross the front legs, push rods pivotally connected at the lower ends thereof to the upper ends of the front legs, cross rods crossing each other in the form of the letter X and pivotally connected at the upper ends thereof to the push rods and at the lower ends to the rear legs, lateral frame members pivotally connected at the front ends thereof to the upper ends of the rear legs and at the rear ends thereof to the push rods, widthwise connecting members bendably constructed and defining the width of the baby carriage when the latter is in the opened state, push rod locking mechanisms for inhibiting the push rods from pivoting relative to the front legs when the baby carriage is brought into the opened state, and cross-rod locking mechanism adapted to abut against the upper ends of the cross-rod to inhibit an upward movement of the cross-rods when the baby carriage is brought into the opened state.

Abstract: A child's safety car seat is set forth selectively convertible into a stroller. In a first configuration, the child safety car seat is formed of two units wherein the first is nestable within the second to enable convenient positioning on a typical automotive car seat. By disengaging the first portion from the second, a rearwardly positioned handle is pivoted substantialy 180 degrees into an upright lock position simultaneously extending plural pairs of rollers positioned to extending linkage to enable the apparatus to perform the function of a child's stroller.

Abstract: A baby walker is provided and includes a base, seat for carrying a load, a frame operably connecting the base and the seat for permitting relative movement of the seat and the base between a fully collapsed position and at least two elevated positions, and a control system coupled to the base for selectively engaging the frame to position the seat in one of the at least two elevated positions to aid in preventing inadvertent movement of the seat to its fully collapsed position. The base includes a pair of eccentrically mounted pivot arms for lowering the base to a braking position upon movement of a support wheel on one of the pivot arms over an edge of an underlying surface.

Abstract: A baby carriage has a pair of front legs (3, 4), a pair of rear legs (7, 8) turnably connected to the front legs (3, 4) by pins, a pair of seat support rods (9, 10) turnably connected to the rear legs (7, 8), a pair of seat suspending rods (11, 12) turnably connected to the seat support rods (9, 10), a pair of push rods (13, 14) turnably connected at their lower portions to the upper portions of the front legs (3, 4) and also turnably connected to the seat suspending rods (11, 12) by pins at their intersections. A widthwise connecting member (15, 16, 17) connects the right and left sides surfaces of the baby carriage, members (18, 19, 20) fix the open state of the baby carriage. When the baby carriage is in the folded state, the rear legs (5, 6) and the front legs (1, 2) lie substantially on the same level, enabling the baby carriage to stand by itself.

Abstract: The present invention relates to a baby's walker with height adjustment apparatus which includes a seat; a slidable base; two U-shaped tubes pivotally connected to each other in crosswise arrangement and disposed between said seat and said slidable base, said U-shaped tubes each having a central portion and ends opposite said central portion, said ends being pivotally connected to said slidable base, said central portion of one of said U-shaped tubes being pivotally connected to one side of said seat, said central portion of the other of said U-shaped tubes being movably engaged to the underside of the opposite side of said seat; two plates secured on said underside of the opposite side of said seat in a parallel arrangement, which each plate having an indented portion formed at its underside; two sliding members provided on said movable central portion with a rectangular opening, and slidably engaged with said plates respectively; a controlling member pivotally connected with said movable central portion wit

Abstract: A folding wheelchair includes a pair of side frames which are collapsible in their own planes. There is simultaneous collapse of two pairs of strut members. The collapsed wheelchair is very compact, even though the erected wheelchair is very reliable due, at least in part, to its avoidance of areas of high stress concentration. In alternatives, the scissor-like strut members are replaced by fixed struts so that collapse in the height direction is not accompanied by collapse in the width direction.

Abstract: A wheelchair has two foldable side frames, link members which cross one another and are pivotable about a common horizontal axis so as to fold the side frames, front wheels and rear wheels connected with the side frames, a back rest with upwardly extending back supporting members, a seat with seat supporting members which are movable upwardly and downwardly in dependence upon a folding movement, and a foot support with foot support carrying arms, wherein each side frame is provided with guide receivers for the seat supporting members, and with supports for the link members, and wherein a rear wheel axle block and the front support carrying arms are formed as a one-piece element of synthetic plastic material. Such side frames have a lower weight, but are stable nevertheless, and also result in an improved handling of the wheelchair.

Abstract: A collapsible lightweight chair for handicapped individuals that is easily removable from an automobile and can be unfolded without requiring adjustment for the user. The travel chair comprises a lightweight wheeled base having a folding chair pivotally attached thereto. A pivoting front rail is located in front of the folding chair and extends upward from the base. Pivoting side rails extend from the chair to latching engagement with the front rail. The front rail can be pivoted to a vertical position and the side rails can be pivoted away from the front rail to allow the user to enter and exit the chair from either side, the front rail being linked to a brake mechanism for preventing rotation of the rear wheels and turning of the front wheels when it is vertically upright, the wheels being freed for turning and rotating when the front rail is angled back so that the side rails can be latched in place.

Abstract: This baby stroller utilizes an inexpensive, lightweight, portable, strong, foldable frame, for use in supporting a central seat portion. The frame assembly includes two pairs of transversely connected sidewall elements comprised of two overlapped cross-struts which are pivotally connected to one another, and which can be releasably secured into a stable, rigid X configuration by the use of a simple, inexpensive, one-piece latching brace. The latching brace is fixedly secured to one cross-strut at a distance from its pivotal connection to the other cross-strut, while the non-secured portion of each latching brace is designed to make a releasable, latching connection to and with the other cross-strut. When the latching brace is latched to the cross-strut to which it is not connected, each pair of cross-struts and their associated latching brace form a stable, rigid triangle. This three-piece triangular structure is easily releasable to a pivotable, foldable configuration.

Abstract: An infants' carriage of the "stroller" type comprises a chassis consisting of two pairs of crossing bars which carry wheels at their lower ends. These wheels are connected to the bars via a cushioning member which consists of a sleeve closed at one end and containing a helical spring against which abuts the end of one of the crossing bars extending into the sleeve.

Abstract: A stroller including the known and accepted structure of wheels, handle and a rigid frame which supports a baby containing seat, enhanced by the fact that several selected ones of the individual elements comprising the frame which are rigid when in use, are selectively articulated and folded back on themselves lessening the exterior dimension and permitting the stroller to be used as a back and shoulder supported carrying device and further capable of being totally collapsed to a relatively flat non-bulky condition for storage.

Abstract: A walker-jumper comprises a support member carrying a seat for a child, a base member, and a collapsible and expandable frame connecting the support and base members to allow adjustment so that the feet of the child can contact the ground to propel the walker-jumper. The frame connection to the support and base members is by way of a slidable mount for permitting the members to be expanded to a desired one of several expanded positions so that the distance to the ground may be controlled for different sized children. The frame passes through a mounting member slidably carried below the support member and a lock engages the mounting member to fix the base and support members in the desired expanded position. After being locked in place, the frame is yieldably coupled to the mounting member to allow limited movement of the frame relative to the mounting member, responsive to bouncing movements of a child.

Abstract: A collapsible stroller frame is provided which includes seat support means, a pair of spaced apart front leg members upper portions of which are pivotally connected to the seat support means, a pair of spaced apart rear leg members upper portions of which include sliding means slidably engaged by the seat support means, handle support means a lower portion of which is connected to the seat support means and an upper portion being in telescoping relation to the lower portion, side bracing means connected to the sliding means of the rear leg members or to a portion of the seat support means, and upper bracing means in telescoping relation to the lower bracing means and operatively connected to the handle support means.

Abstract: A collapsible perambulator cot which is adapted to fold between an operative and inoperative position which includes in addition to opposed folding side cross-struts, a bottom or base cross-struts which have the respective lower ends hinged to the rear folding legs of the frame. The structure includes further telescopingly associated elements of rectangular cross-section paired and arranged to form strengthening side elements connecting the outer ends of the cross-struts, the telescoped arrangement allowing folding of the perambulator.

Abstract: A child's stroller, pusher, pram which folds into a compact unit. The handle, seat, frame and undercarriage are interconnected by a linkage so that the components fold down towards the wheels as the wheels move towards each other.

Abstract: A collapsible frame structure for the body of a child's push chair has a pair of side frames between which a collapsible X-frame is pivotally connected. Each side frame has when erected, a pair of upright members and two diagonal members which are pivotally connected to the upright members adjacent their ends. The diagonal members have a pivotal interconnection and each diagonal member has a hinge between this pivotal interconnection and one of the pivotal connections between each diagonal member, and an upright member. Toggles are provided for maintaining the X-frame extended. Extensions of the respective diagonal members provide handles for the push chair and a support for the back of a fabric chair.

Abstract: A series of related collapsible lightweight frames are provided which are adapted to be used in conjunction with carriers or seats to form strollers, carriages, high chairs, and the like.

Abstract: A scissor frame lock includes a circular plate sandwiched between the corresponding legs of the scissor frame at their point of intersection. The legs and the plate are formed with aligned openings for slidably receiving a pivot pin. One end segment of the pivot pin is bent back on itself so that the end segment bypasses the adjacent leg and extends through a second opening in the plate. The pin is biased outwardly so that when the two legs are more or less perpendicular the pin segment projects into an opening in the other frame leg to lock the legs in that orientation. The legs are folded/together by depressing the pin so as to disengage its end segment from that opening.

Abstract: A height adjustable infant stroller and high chair combination comprising a seat member, seat member supporting structure and seat member leveling structure. The seat member is vertically positionable along the seat member supporting structure at selected elevations while maintaining the supporting portion of the seat member substantially parallel with the supporting surface of the device. Locking devices are utilized to prevent undesired seat member elevation and support surface movement.

Abstract: A baby carriage constructed of right and left handle rods, front rods and seat rods pivotably connected by folding front and rear X-shaped beams and folding rear operation rods. The front folding beams connect the front rods and the seat rods, while the rear folding beam connects interior ends of the operation rods to movable members slidably mounted on the handle rods.

Abstract: An accessory for a foldable baby carriage having a seat disposed on a collapsible tubular frame is disclosed in which the accessory has a first and second portion, the first portion constituting a cushion for the bottom and back of the seat when the carriage is open but which folds within the carriage when the carriage is collapsed and a second portion which is joined to the first portion and forms a bag-like receptacle when the carriage is unfolded but which encircles the folded frame and enclosed first portion so as to secure both but remain accessible to the operator of the carriage.

Abstract: Foldable carriages, strollers, wheeled-chairs, carts and the like assemblies which simultaneously fold in two of their three dimensions to form a folded stick-like or umbrella like bundle, i.e., of the Maclaren type, are provided with complementary collapsing structure for supporting a pram-type cot, which is interchangeable with a stroller-type seat. The specific supporting structure, cot structure and interchangeable seat are disclosed.

Abstract: An automatic brake for wheeled, carriages is characterized by U-shaped rod brackets, with integral out turned ears having brake rods slidable, and spring biased outwardly therein. The rods are preferably right angular so that identical brackets can be used for the telescopable finger grip actuating mechanism. In baby carriages the finger grip is spaced only for adult hands. In wheel chairs the brakes are released by the finger grip of the pusher or by a lever actuated by the leg of the occupant. In shopping carts the brakes are released by the finger grip of the pusher or by a lever actuated by the up-swing of the rearward nesting gate.

Abstract: A folding baby carriage naturally locked in an opened state by the weight of the baby exerted to first connecting rods. The carriage cannot become folded unexpectedly during running. A first one of the connecting rods is pivotally coupled to a front leg. A second connecting rod which has a U-shaped section is pivotally coupled to the first connecting rod at one end and pivotally coupled to a rear leg at the other end which is rotatably crossed and mounted to the front leg. A bent rod is pivotally coupled to the first connecting rod at one end, and a front supporting rod is pivotally coupled to the front leg at one end and is pivotally and foldably connected to an opposite front supporting rod at the other end. The other end of the bent rod is pivotally coupled to the front supporting rod.

Abstract: An adapter apparatus is employed to convert a standard collapsible baby stroller into a portable sleeper stroller. The adapter includes a pair of extension members which are received by two diagonal tubular elements on the collapsible frame of the stroller. A piece of fabric is suspended between the two extension members in such a fashion as to form a sling having a relatively horizontal base. A pillow is placed in the seat of the stroller so as to continue the horizontal plane established by the sling. The sling and pillow are then covered with a section of mattress material upon which a child may recline. The adapter also includes a T-shaped stop guard means at the end of the sling to prevent a child from slipping out of the end of the adapter and a pair of sidewall means to prevent a child from inadvertently rolling over the side of the stroller. A conventional baby stroller may be easily converted into a sleeper stroller by means of the invention.

Abstract: A foldable stroller for children is disclosed having a back formed by several longitudinal rigid and padded portions which are articulated together by means of folds. Two supporting divider portions which articulatedly connect the back supports with the frame, permit two degrees of inclination for the back. The stroller is strengthened by the employment of front and rear, articulated crossed rods. The folding control of the stroller is effected by a pair of cross pieces split into two articulated sections and a common control bar. The cross pieces are placed between the side supports of the back. When unfolded, the cross pieces support the back. The control bar, when raised, operates to fold the stroller.

Abstract: A collapsible carry-all cart includes a frame which is provided with side rod members that are retractable to thereby selectively collapse or extend the cart in a front to rear direction. The frame has a pair of legs with wheels mounted thereon at each side thereof. The pairs of legs are pivotable in scissor-like fashion and are slidable vertically on the frame from an extended position in which the cart is rollable on the wheels to a storage position in which the pairs of legs are shifted to an upper position. A handle element extends upwardly from the rear of the frame, and a cover member is secured to the frame in order to provide a storage compartment. An accordion-type pocket is integral with the cover at the front of the cart.

Abstract: A folding wheelchair of rugged but relatively lightweight construction has the ability to collapse in the fore and aft directions and laterally. The chair back and arm rests are also foldable to minimize the height of the collapsed chair which is then highly compact. When the chair is unfolded for use, pairs of pivot elements on the foldable leg members of the chair form stops for the arm rests and chair back. Adjustable foot rests are provided on the forward leg members of the chair.

Abstract: A stroller has a pair of parallel front legs, an inverted U-shaped handle rod foldably connected to the upper ends of the front legs, a pair of parallel rear legs interconnected by a handrest and pivoted to specified portions of the front legs crosswise respectively, a pair of stays bent at an obtuse angle and pivoted at their upper ends to the handle rod, a transverse rod interconnecting the lower ends of the stays, a pair of links each having one end pivotally supported by the transverse rod and the other end pivoted to each of the rear legs at a specified position near the lower end of the rear leg, a U-shaped footrest pivotally supported at its opposite ends by the transverse rod and pivoted at specified portions to the front legs near the lower ends thereof, and locking members interconnected by a connecting rod and pivoted to specified midportions of the rear legs respectively.

Abstract: A foldable pram chassis in which two lateral X-shaped frames are connected articularly with two horizontal carriage body and seat fixing struts, a U-shaped plate articulated to the lateral X-shaped frames and a rectangular slide frame, cross-struts of which are foldable so that the chassis may be collpased, the rectangular slide frame pivots in the U-shaped plate and lying over the carriage body and seat fixing struts.

Abstract: There is disclosed a baby walker to be used by a child wherein the body of the child is supported above the ground so that the feet of the child are in contact with the ground, thus permitting the child to propel the baby walker. The baby walker comprises means for permitting the walker to be collapsed or expanded, and means for locking said collapsing and expanding means to fix top and bottom members of the baby walker in a desired one of several positions. In this manner, the seat supporting the child is adjustable so that the distance to the ground may be controlled for different sized children, or for the same child over a period of growth.

Abstract: A folding structure in one embodiment including ground wheels and handles to form a child's stroller, the structure having a pair of elongated frame tubes that are laterally foldable and held together at two spaced points on each of the tubes by pivotally connected front and rear X braces, the structure also including a pair of elongated seat tubes pivotally attached to main frame tube-supported folding mechanisms that allow the seat tubes to move upwardly and in closer angular alignment with the main frame tubes when the latter move closer together as the structure is changed from its unfolded to folded configuration, resulting in a folded cross-sectional area not much greater than the sum of the cross-sectional areas of the individual members.