Abstract: A rocker mechanism (10) preferably intended for rotatable arm chairs, comprising an upper part (12) which is attached to a seat and which is pivotally journalled to an underpart (14) by means of a horizontal pivot shaft (24), the underpart being carried by the vertical supporting pin of, for example, a rotatable arm chair. The underpart presents an upstanding holder (36) having a throughpassing opening (38) for accommodating a locking rod (48) provided with a handle and extending parallel with the pivot shaft (24), and promontories (40) which have a trapezium-shape cross section and which are intended for abutment with recesses (41) in two clamping plates or jaws (76) located on a respective side of the holder. The locking rod (48) is journalled in bearing blocks (58) on the upper part (12) and presents a lefthand screwthread (50) and a righthand screwthread (52) which co-act with respective screwthreaded holes (51 and 53) provided in the clamping plates or jaws (76).

Abstract: A press-fit splined connection is provided for joining rotary members (4) and (6) together with member (4) having at least one elongate groove (1) having opposite sidewalls and member (6) having at least one elongate tooth (8) having opposite side walls and operative to register with and be slideably received in groove (10) to provide the splined connection between members (4) and (6).The press-fit is provided by the sidewalls of one of tooth (8) or groove (10) having a sinusoidal configuration to provide convex surfaces (16) that impinge upon the sidewall adjacent thereto either at about the same location or at about one-half period apart with sufficient interference to provide the press-fit between tooth (8) and groove (10). Either of tooth (8) or groove (10) having the sinusoidal configuration preferably includes a straight portion for a predetermined length "L" at either or both of its ends to facilitate assembling members (4) and (6) together.

Abstract: A chair (10) designed for its comfort, ease of operation, and therapeutic effect. The chair (10) includes an envelope (12) having first and second portions (14, 24). The first portion (14) defines a reservoir (16) therein, and the second portion (24) has a pillar-like member (28) received within an interior (26) thereof. The interior (26) of the second portion (24) communicates with the reservoir (16) defined within the first portion (14) of the envelope (12), and the pillar-like member (28) is sufficiently long so that, when it is received within the interior (26) of the second portion (24) of the envelope (12), it will extend into the reservoir (16). The reservoir (16) is filled with a volume of fill (18) which, typically, comprises stryofoam beads (20).

Abstract: The structure of a motor vehicle seat is constituted by a plurality of modular sub-units which are put together and are each produced in various mutually interchangeable versions so as to enable efficient and economical production of various models of seat. Each vehicle seat includes a main frame having a longitudinal guide device and a backrest adjustment device, a squab frame having different adjustment features, a backrest frame having different adjustment features, a specific padding and a specific cover therefor.

Abstract: A hinge joint for use in the seats of motor vehicles has a first leaf which is affixed to the body-supporting part of the seat, a second leaf which is affixed to the pivotable back rest of the seat, and a pintle which provides a pivot for the second leaf. Each of the leaves is provided with a gear and one of the gears surrounds the other gear and has a larger number of teeth. One of the leaves is mounted on two coaxial portions of the pintle, and the gear of the other leaf spacedly surrounds a sleeve which is axially movably mounted on an eccentric portion of the pintle between the two coaxial portions and serves as a retainer for a diaphragm spring which biases the gear of the other leaf axially and radially into mesh with the gear of the one leaf. A needle bearing is interposed between the sleeve and the eccentric portion of the pintle, and a ring can be placed around the diaphragm spring to be in turn surrounded by a passive gear or by a ring-shaped extension of the one component.

Abstract: Fixing device for a covering (9), especially a covering of a seat, comprising on the one hand a profiled section (1) having longitudinal slots (15), and on the other hand an edging wire (17, 17a) bent at at least two places to form fasteners (19, 19a) intended to cooperate with the slots, the fasteners (19, 19a) lying generally in a plane inclined to the axis of the edging wire (17, 17a) and being capable of deforming by twisting during their entry into a slot (15) in the profiled section, but resiliently recovering their initial shape and their inclined position after this insertion.

Abstract: A new and useful adjustable chair and adjustable height chair arms therefor in which a parallelogram or pantographic mechanism for activation of the height adjustment of the chair arms is located in the back portion of the chair structure and the arms are pivotal on the back. A back support post pivotally supports the back. The support post, then, is extensibly secured to the seat support or frame and the seat is tiltably pivotal on a swivel bracket operating to turn on the vertical axis of a spindle post extending upwardly from the chair base. The seat has an adjustable resilient compression stabilizing spring support forward of the seat tilting pivot and forward of the swivel post axis. The back support is torsionally supported on its pivot connection to the frame in an adjustable manner. Cushion stop means function between the back and the back support post.

Abstract: A shaker having a hollow housing in the form generally of two hollow cylinders with the central axes disposed from one another and integrally connected together with a closed end and an end shield covering the second end. A first shaft is supported on bearings in the first cylinder concentric to it, with an eccentric weight attached to the first shaft. A second shaft concentric to the second cylinder is supported on bearings concentric to the second cylinder. Only one end of the housing, the other end is closed, has an end cap and the shafts are connected by helical pinions so that the helical pinions urge the weights and shafts in opposite directions from one another.

Abstract: A marine vehicle comprising a hull, a deck supported by the hull, and a seat including an L-shaped bracket including a generally horizontal portion having an upper surface, and a generally vertical portion having a front surface, a seat bottom member including a bottom surface connected to the upper surface of the horizontal portion, a seat back member including a back surface connected to the front surface of the vertical portion, and a mechanism for mounting the bracket on the deck.

Abstract: Improved vehicle seats can be made in a process in which the seat-covering material and a flat heater are inserted into a negative mold for a vehicle seat and the mold is filled with in-situ foam because the flat carrier for the heating conductor of the heater is constituted by a braided wide-mesh grid made of plastic strings or plastic yarns, which during the filling of the negative mold for vehicle seats with in-situ plastic foam are surrounded by the foam substantially without a change of the porosity of the plastic foam.

Abstract: A surgeon's operating stool 10 is provided which is readily movable when not occupied by a person but resists undesirable movement once a person has occupied the stool 10. The stool is provided with a series of rollers 20 which normally support the stool 10 and allow for movement in any desired direction. However, the rollers 20 include a spring loaded collapsible mechanism which, when occupied by a person, forces the rollers 20 to retract into the base 12 of the stool 10 and causes a nonskin surface 38 to engage the floor. The base 12 of the stool 10 is configured to receive the feet of a person using the stool, such that a person using the stool in either a standing or sitting position forces the retracting mechanism to remain retracted and thereby prevent undesirable movement during use. The stool 10 also includes a hydraulic height adjusting mechanism which is readily adjustable via foot operation.

Abstract: An articulated support rod fit for realizing the frame of a forward folding back of a seat, such as sofa, armchairs or the like. The rod is formed by a row of arms connected in an end-to-end relation by means of a frictional articulation, and comprises means for the connection to the main frame of the seat and, at the free end, a flat elongated plate, which may be either thick or thin according to the material used. Each arm comprises stop means at its end sides engaging with corresponding stop means provided on the corresponding end side of adjacent arms, to limit the mutual rotation of the arms to a first position wherein they are substantially aligned and to a second position where each arm is inclined with respect to the adjacent one of an angle lower than 90.degree..

Abstract: An improved lightweight, collapsible preferably PVC formed glove bag asbestos brake removal/confinement system. The bag includes removable stiffening ribs and a replaceable flexible dual membrane opening in one end to mount the bag over the brake assembly. The bag is supported from a surface underneath by an adjustable telescoping pole. The bottom of the bag includes an access zipper for removing or placing tools or the brakes in the bag. The bag optionally includes a removable bottom protective panel to prevent penetration of the bag by tools or brakes dropped thereon. The interior of the bag can be accessed from either side or from the front thereof and is tapered or shaped as desired for easy access to the brake assembly work area.

Abstract: Assembly for fastening upholstery to the padding of a vehicle seat, which assembly comprises a bar sunk inside the padding, and a flexible plastic section stitched to the upholstery and secured to the bar by means of a number of metal fasteners.

Abstract: An improved sunshade attachment comprising a first generally U-shaped member releasably securable to a pair of clamps for attaching the sunshade to a desired structure, a second generally U-shaped canopy supporting member releasably attachable to said first U-shaped member, a pair of side arms interposable between said first and second U-shaped members, a canopy for covering said members and providing shade to an area beneath said canopy, and a pair of coil-type screens mountable on either side of said sunshade and extensible to provide lateral protection and privacy.

Abstract: A headrest tilting mechanism includes a bar having first and second ends, with a headrest mounting portion proximate the first end and a substantially straight portion proximate the second end. A support means includes a curved cam surface and a pin having ends rotatably coupled to the support means. The pin has a cross-slot therethrough and a portion of the bar which is intermediate the first and second ends passes through the cross-slot. A cam following means attached to the bar proximate the second end causes the second end to follow the cam surface of the support means. With this arrangement, the curved cam surface is not located at the very top of the chair back and therefore the head of the patient can be significantly closer to the lap of the dentist than prior art arrangements.

Abstract: An arrangement for mounting a reclining device to a seat, wherein the seat is provided with a reclining device having a lower bracket formed with a bent intermediate part, thus defining a recessed lower part therein, a slide rail device under the seat, and a seat belt anchor, and wherein, on the slide rail device, erected is a base bracket having a bent support portion formed at its upper end. The lower bracket and seat belt anchor are firmly secured to the base bracket, such that the bent support portion of the base bracket is juxtaposed on the bent intermediate part of the lower bracket. Accordingly, a downward load applied to the lower bracket and an upward pulling force to the seat belt anchor are counterbalanced at those juxtaposed bent intermediate part and bent support portion into a nil, whereby the seat is protected against deformation.

Abstract: The invention relates to a seat assembly for an office chair or the like, having a seat and back (6, 7) which are adjustable especially by shifting the body and having a cradle (5). The seat and the back are hinged together at their adjoining ends by at least a first articulation (8) and have, at points distanced from the articulation (8), bearing elements (13, 14) which are suspended or guided on the cradle by positive guiding means (10, 11) and are mounted for movement along paths established by the positive guiding means. The articulation (8) is free-floating. The bearing elements (13, 14) are guided by the positive guides (10, 11) independently of one another.

Abstract: Modular seating comprises flat side frame members including chair frames and bench and table frames, with each frame including means to bolt seats and tables to the sides thereof, the units being constructable as free-standing components or as interconnected seats, tables, and benches. The frames are formed of laminations having overlapping laminated joints wherein laminations of intersecting members extend all the way through the joints. The back rest has a frame without a rigid frame member at the top of the back rest.

Abstract: A slidable disk holder extends from a box structure a sufficient distance to permit dispersement of the disks. Means for simultaneous dispersement of all of the disk holders fit between each envelope-like disk holder. In an interconnecting tabular embodiment, tabs cut from the sides of each envelope-like holder connect each holder to an adjacent holder at a front end. Envelope extension surfaces interconnect inner ends of the envelopes slightly distant from the inner end of each envelope. The disks may be fanned out manually or, with pretensioned or spring actuated living hinges, the disks may fan out automatically upon release of a panel and notch locked into a base plate of the slidable disk holder. In another embodiment simultaneous dispersement is accomplished by a mechanically pivoting arm with a protrusion between each adjacent pair of envelope-like disk holders. Vertical or horizontal fanning may take place using living hinge connections to a slidable base plate.