Abstract: The present disclosure provides a floor grinding machine (1) for grinding floor surfaces of stone or stone-like material. The machine comprises a machine frame (2), a grinding head (3), supported by the machine frame (2), a motor (4), supported by the machine frame (2) and operatively connected to the grinding head (3), and a handle frame (5), extending from the machine frame (2), and pivotable relative to the machine frame (2). The machine further comprises a guide member (12), which is pivotable relative to the machine frame (2) and pivotable relative to the handle frame (5), a first locking device (14), for locking the guide member (12) relative to the handle frame (5), and a second locking device (13), for locking the guide member (12) relative to the machine frame (2). The disclosure further provides a handle for a floor grinding machine as well as methods of setting a position of a handle and methods of steering a floor grinding machine.

Abstract: A pivot fitting having a stop lever, a ratchet lever, a blocking device and at least one toothed ring. The stop lever and the ratchet lever can be pivoted in relation to one another in an adjustment direction and in a reset direction. The stop lever and the toothed ring are coupled to one another such that pivoting of the stop lever and ratchet lever in the adjustment direction is accompanied by pivoting and/or rotation of the toothed ring in relation to the blocking device. The blocking device has at least two catches, that, in an adjustment position of the pivot fitting, the pivoting action of the stop lever and ratchet lever in the reset direction is countered by form-fitting engagement of at least one catch in the toothed ring.

Abstract: A vehicle seating assembly includes a seatback. A head restraint is operably coupled with the seatback by first and second support posts. The head restraint is operable between a stowed position and a use position. A lower brace is operably coupled with a lower portion of the head restraint. An upper brace is operably coupled with an upper portion of the head restraint. A latching mechanism is coupled with the seatback and operably coupled with the upper brace and the lower brace. The latching mechanism is operable between a first position corresponding to the stowed position of the head restraint, and a second position corresponding to the use position of the head restraint.

Abstract: An angle-adjustable hinge in which a pair of floating wedge members are disposed as to be rotation symmetric for 180° around a first axis as an axis of symmetry, and each of wedge faces of four wedge-shaped window portions is serially formed on an arc around a second axis as a center, eccentric from the first axis and rotation symmetric for every 90° around the first axis as the axis of symmetry.

Abstract: System for transportation and/or storage of persons in transportation vehicles, comprising personal transport modules comprising a personal support module (1), fit to sit upon (6), to create space for standing and to lean against (7). Moreover, each personal transport module may comprise a personal luggage module (12) mounted above the person and having its entrance (13) either at the person's front or back side. Each support module may comprise a first (4) and a second support part (5), the first one being movable upwards and downwards, and the second one being pivotally mounted to the first support part around a horizontal axis. In a first support position (6) the first support part has a position fit to act as a backrest and the second support part has a position fit to act as a seat. In a second support position (7), both the first support part and the second support part have a position fit for standing or leaning support of the using person.

Abstract: An articulation mechanism has a central part and a head part each made of a pair of shaped elements. The pairs of shaped elements form inner and outer shells. The inner shells are positioned inside the outer shells. The pairs of shaped elements are pivotable relative to one another and lockable relative to one another in several positions in one pivot direction. The outer shells have inwardly oriented projections and the inner shells have openings. A slide is moveably arranged inside the inner shells. The slide has locking members projecting through the openings of the inner shells and engaging intermediate spaces of the projections. A spring acts on the slide in an engagement direction of the locking members relative to the projections. The projections are shaped such that the locking members automatically reach a locking position in a first pivot direction of the head part.

Abstract: An adjustable foundation for use with a bed frame. The foundation includes a base part and an adjustable head end part. One or preferably a pair of improved hinges hingeably attach the head end part to the base part. Each of the hinges includes a first mounting plate and a second mounting plate pivotally connected to the first mounting plate, a hinge latch, a trigger pivotally attached to the hinge latch, and a catch fixedly attached to the second mounting plate. During the raising of the head end part the catch enters a selected one of the notches in the lower edge of the hinge latch to hold the head end part at a selected fixed raised position. When it is desired to lower the head end part the head end part is raised beyond the highest fixed raised position, which causes the catch to engage a trigger notch wherein the trigger establishes a lowering position for lowering the head end part.

Abstract: Chair comprising a seat part and a back part that are hinged together, the back part being movable relative to the seat part between two extreme positions, one of the parts being provided with a toothed segment having teeth shaped like sawteeth, the other part being provided with a catch which engages with the toothed segment to fix the latter in various positions at least against a movement in one direction, and means that press the catch against the toothed segment, the toothed segment containing a cam that engages with a cam follower connected to the catch, the cam pressing the catch away from the toothed segment in one extreme position of the back part, holding devices being present to retain the catch in this position and release devices that release the catch from the holding devices in the other extreme position of the back part.In addition, means may be present that can be actuated by hand to release the catch from the toothed segment in any desired position of the back.

Abstract: A seating apparatus including a frame, a member supported by the frame for movement relative thereto, a ratchet mechanism for affording movement of the member relative to the frame in a first direction from a first extreme position through a range of positions to a second extreme position and for preventing movement of the member relative to the frame in a second direction opposite to the first direction, the ratchet mechanism including a ratchet, and a one-piece pawl including a first portion engageable with the ratchet and a resilient portion for biasing the pawl into engagement with the ratchet, and a release mechanism for completely disengaging the ratchet and the pawl when the member is moved into the second extreme position.

Abstract: An angle adjustable joint for use in furnitures which is consisted of a locating member, a driven member pivoted to the locating member, two brake members pivotably fastened inside the driven member on the same axis and controlled by two torsional springs to hook in teeth on the locating member, and a return plate pivotably fastened inside the locating member for return control. Rotating the driven member on the locating member causes the brake members to alternatively change their engagement with the teeth on each ratchet plate from one to another permitting the driven member to be positioned at either of a plurality of angles relative to the locating member.

Abstract: A suitcase pivoting arm including an upper and a lower arm member, an actuating plate, a mating block, axle pins, and a spring. The upper and lower arm members are pivotally connected with the actuating plate to allow the actuating plate to freely rotate. The upper arm member includes a round plate shaped front end with inner and outer lugs and one or more notches made therearound, the mating block being pivotally connected to the lower arm member with the top end of the mating block being forced by the spring to be in contact with the periphery of the round plate shaped front end of the upper arm member. Upon turning the arms outward the mating block is allowed to set in the notch of the round plate shaped front end of the upper arm member, the upper arm member is protected from reverse rotation so as to support the lifted suitcase cover.

Abstract: Continuously adjustable pivoted hinge, such as employed for automotive vehicle recliner seat back, wherein a toothed sector on one hinge element is retained by a toothed pawl on the other which has freedom of mounting connection at least equal to the pitch of one tooth in order to accommodate full tooth engagement for any continuously variable relative position of the sector. A pair of pivotally anchored cam elements engage angularly related cam surfaces on the pawl after its full tooth engagement with the sector. Variable travel of cam surface to accommodate fully engaged prepositioned pawl with self-locking angle resisting pawl displacement in either angular direction from sector tooth pressure, is sufficient to accommodate at least one tooth displacement of the pawl in order to lock the pawl in any position of initial full tooth engagement. The pawl is pivotally mounted at the hinge pivot with a radial slot to accommodate tooth disengagement.

Abstract: An article of furniture such as a chair (10) includes a seat member (13), a back member (11) pivotally attached to the seat member (13), leg members (14,16) attached to the seat member (13), and arm members (20) attached to the back member (11). The arm members (20) are associated with the leg members (14,16) such that the angular relationship between the seat member (13) and the back member (11) may be adjusted to a plurality of positions. A track system (26) defines a plurality of adjacent stop positions (29) with a pin member (46) interacting with the track system(26) to engage a stop position (29) therealong. The track system (26) is configured so that upon relative movement of the track system (26) and the pin member (46), the pin member (46) engages the next adjacent stop position (29) thereby moving the back member (11) with respect to the seat member (13 ) only to the next adjacent plurality of relative angular positions.

Abstract: A height adjusting device for manually locating and automatically locking a chair backrest at a desired vertical position relative to the chair seat. The device comprises two guided and slidably interlocking plates and one lock pin. Optionally, one plate may itself be the backrest support or "J" bar. One plate is mounted on the chair backrest and one plate is mounted on the "J" bar or support frame and engaged so as to slide one relative to the other. The lock pin is free to move within the slotted track of one plate and forced therewith from one locked position to a standby position or to an unlocked position by the cam action of any of a plurality of notches and inclined surfaces of a slotted cam contained on the other plate. The device is characterized by the absence of springs or other supplementary biasing means and by virtue of its simplicity it is highly reliable and economical to manufacture.

Abstract: A headrest whose position can be adjusted by moving its body forward and backward in relation to a support stay comprising the headrest body located above the support stay which is planted in the upper portion of the seat back of a seat, a support means located between the headrest body and the support stay to support the headrest body movable in relation to the support stay, a lock mechanism located between the support stay and the support means to freely swing the support means, corresponding to the movement of the headrest body in a direction, but limit the swinging movement of the support means against the movement of the headrest in another direction, and a lock release mechanism for releasing the lock mechanism when the headrest body is at the stop end of its moving stroke.

Abstract: In the self-releasing pawl and ratchet mechanism of this invention, for controlling positions of adjustment of a seat element that is movable relative to a frame element, one member of the pawl-ratchet pair is fixed to one of those elements, the other member is confined to movement relative to the other element in directions transverse to the directions of adjustment of the seat element. A latch for locking the pawl and ratchet members out of engagement with one another is carried by the element that carries the movable member of the pawl-ratchet pair and is actuated in the adjustment directions, between latching and release positions, by a lost motion connection with the other element. In its release position the latch is disengaged from the movable member of the pawl-ratchet pair. In its latching position, wherein it is releasably retained, as by friction, the latch holds that movable member in a ratchet disengaged position.

Abstract: A headrest for seats for use in vehicles has a fixed frame fixedly secured to the upper ends of stays supported on a seat back, two right and left movable frames secured to a panel of the headrest, and two pairs of parallel links connecting the fixed and movable frames; a first pair connecting the right movable frame to the right end portion of the fixed frame, and a second pair connecting the left movable frame to the left end portion of the fixed frame. One of the first pair of links is connected with one of the second pair via a connecting portion. With such structure, the headrest can be moved back and forth with little change in height, and, since there are no moving parts present in all portions of the headrest except in the two end portions of the fixed frame, a throughbore can be provided in the central portion of the headrest.

Abstract: A tiltable operator's seat assembly for a backhoe has detachable independently tiltable arm rest assemblies pivotally mounted on opposite sides thereof. The seat assembly is tiltable between normal, mid-tilt and full-tilt positions. Each arm rest assembly is independently tiltable upwardly from a full-down (stored) tilt position, to normal-tilt, to mid-tilt or to high-tilt positions. An operating mechanism in the arm rest assembly enables it to be releasably locked in the selected tilt position. The arm rest assembly cannot be moved downwardly from one tilt position to a lower tilt position. Upward pivoting of the arm rest from the high-tilt position to a reset position operates the operating mechanism to effect unlocking and enable the arm rest assembly to be swung to full-down (stored) tilt position for storage or for repositioning.

Abstract: An adjustment/engagement device applicable to a thigh support device, a head-rest height adjustment device and the like in a vehicle seat is disclosed. In this adjustment/engagement device, a stopper bracket having a plurality of engagement grooves engageable in only one direction and provided at their both ends with engagement pieces is provided in one of a fixed-side member and a movable-side member in a movable adjustment portion of the vehicle seat, while a lock bracket engageable into the front-end-side engagement groove of the stopper bracket and movable in a separating direction after abutment against the front-end-side engagement piece of the stopper bracket as well as a lock-off bracket rotatable when abutted against the rear-end-side engagement piece of the stopper bracket are provided in the other, whereby the position of the movable-side member can be adjusted by directly operating the movable-side member itself.

Abstract: A driving seat for use in an industrial vehicle such as a forklift, tractor and combine is disclosed. The driving seat comprises a seat back which is divided into two portions, i.e., upper and lower portions such that the upper portion can be folded backwards relative to the lower portion so as to lower the height of the seat back. The upper portion of the seat back is connected with the lower portion of the seat back by means of a rotary support device which is capable of performing such folding operation of the upper portion of the seat back by simply pressing against the upper portion itself.

Abstract: An angle adjustment device is disclosed in which the angle of inclination of a headrest or thigh support can be adjusted by rotating a movable body itself forming a part of the headrest or thigh support. When the movable body is rotated, sectors fixed to the movable body are rotated together with the movable body and are engaged with a stopper rod secured to a bracket. Thus, the sectors are locked in a desired position, that is, the angle of the movable body is adjusted. When the movable body is rotated beyond a predetermined angle of rotation, the sectors are disengaged out of the stopper rod and the movable body is rotated in an opposite direction so as to return to its initial position.

Abstract: A hinge for a chaise and the like has a first hinge element having a segment portion with a plurality of first arresting formations, a second hinge element provided with an arresting member pivotally mounted on the same and having control faces and a plurality of second arresting formations arranged to abut against the first arresting formations, and control projections engageable with the control faces of the arresting member so as to guide the latter in connection with the first hinge element having the segment portion.