Screw And Nut Patents (Class 248/405)
-
Patent number: 5842742Abstract: A chair including a mechanism for preventing shaking of the chair due to vibration of a drum performance, or the like. The chair seat is attached to an upper support post by a holder that clamps around the upper support post. The holder includes two opposite holder parts which are drawn together by tightening screws. The upper support post is received in the interior of a lower support tube. A shaking prevention compression bush is disposed on the lower part of the upper support inside the interior of the lower support and presses against the interior wall of the lower support preventing shaking of the upper and lower supports.Type: GrantFiled: January 6, 1997Date of Patent: December 1, 1998Assignee: Hoshino Gakki Kabushiki KaishaInventor: Yoshihiro Hoshino
-
Patent number: 5816556Abstract: An adjustable chair stand including a stand having a socket at a top side thereof, a threaded stem inserted into the socket and secured thereto to support a seat at the desired elevation, a bushing mounted in the socket around the threaded stem and having an arched packing plate in a side opening thereof, a lock screw mounted on the socket and turned to press on the arched packing plate against the threaded stem, and a clamping device fastened to the threaded stem and supported on the socket to stop the threaded stem from linear movement, the clamping device including two hinged arched clamping plates, and a fastener adapted to fix the free ends of the hinged arched clamping plates together.Type: GrantFiled: November 4, 1997Date of Patent: October 6, 1998Assignee: HWA Shin Musical Instrument Co., Ltd.Inventor: Tsun-Chi Liao
-
Patent number: 5772163Abstract: A device for holding and selectively tipping a container of a liquid into which an implement, such as a brush, is periodically inserted, for removing a portion of the liquid contents, includes a base to be placed on a surface, a receptacle for holding the container, and a hinge joining the receptacle to the base substantially along a side of the receptacle adjacent the base when the receptacle is in upright position on the base. The receptacle can be rotated or tipped about the hinge means to tip the container held in the receptacle. The tension on the hinge is preferably adjustable to adjust the resistance to rotational movement of the hinge. The receptacle is preferably lined with a resilient and compressible material such as plastic foam so that containers of various shapes and sizes may be inserted into the receptacle and held by compressed material.Type: GrantFiled: October 5, 1995Date of Patent: June 30, 1998Inventor: Robert P. Young
-
Patent number: 5749557Abstract: A height adjusting device for a chair consists of an inner tube having a top end fixedly connected to a chair seat and a bottom end fixedly connecting with a bushing, a positioning tube extending upwardly from a chair base, having an upper end mounted with a sleeve for receiving the inner tube and a base plate defining a plurality of downward protrusions, a screw having a threaded upper section for threadedly engaging with the bushing and a reduced lower section defining an annular stepped edge and a bottom end extending through the base plate to fixedly attach with an engaging member defining a plurality of upward protrusions for releasably engaging with the downward protrusions of the base plate, the threaded upper section of the screw defining a top projection and a bottom projection for limiting the traveling of the bushing therealong, a spring and a bearing assembly being mounted around the reduced lower section of the screw and located between the base plate and the threaded upper section of the screw.Type: GrantFiled: May 23, 1996Date of Patent: May 12, 1998Assignee: Huang Ching-FengInventor: Shu-chuan Chang
-
Patent number: 5738326Abstract: A seat stem positioning structure for a chair for drummer, including an internally threaded seat stem connector shaped like a stepped tube and fastened to a tubular central shaft and equipped with pivoted legs for supporting on the ground, a threaded seat stem having a screw section threaded into the seat stem connector to hold a seat for sitting, and a clamping device fastened to the seat stem connector and the threaded seat stem by fastening means to firmly secure them together, the clamping device including two hinged clamping plates having a respective connecting plate at the respective free end fastened to each other by a screw and a wing nut, and a respective downward locating rod forced into engagement with a respective locating notch in a step at the seat stem connector.Type: GrantFiled: October 16, 1996Date of Patent: April 14, 1998Assignee: Hwa Shin Musical Instrument Co. Ltd.Inventor: Tsun-Chi Liao
-
Patent number: 5722627Abstract: A chair height adjusting mechanism including an externally threaded upper support supporting a chair seat, a tubular lower support into and out of which the upper support is movable. An internally threaded rotatable member rotatable up and down along the upper support. An upper gearing surface on the underside of the rotatable member. A fixed member around the upper support and through which the upper support is slidable. A tightening part for clamping the fixed member on the upper support. The fixed member having a lower gearing surface meshable with the gearing surface on the rotatable member so when they are in mesh, the rotatable member is held stationary. Support legs on the lower support and also connected with the tightening part.Type: GrantFiled: February 3, 1997Date of Patent: March 3, 1998Assignee: Hoshino Gakki Kabushiki KaishaInventor: Yoshihiro Hoshino
-
Patent number: 5685510Abstract: A height adjustment system for a desk, workstation or the like is provided comprising a plurality of height adjustable legs each having a first part in the form of a hollow column and a second part movable relative to the first part in a vertical direction. The second part of each leg includes a gearbox housing containing a crown gear provided on a vertically extending rotatable shaft and at least one pinion gear engageable with said crown gear. The vertical shaft includes a screw-threaded portion engaged by nuts on a base plate of the column. A winding mechanism is provided for rotating a horizontally extending shaft on which the pinion gear is provided. Rotation of the horizontal shaft causes the vertical shaft to rotate thereby moving the second part relative to the column so adjust the height of a top member secured on the gearbox housing.Type: GrantFiled: March 8, 1995Date of Patent: November 11, 1997Assignee: Prima Furniture (Aust) Pty LtdInventor: Roger Graham Frankish
-
Patent number: 5660495Abstract: A locking-unlocking mechanism is disclosed which is capable of realizing firm and reliable connection between pipes when a plurality of pipes telescopically arranged are extended, and capable of disconnecting the connected pipes rapidly and precisely.Type: GrantFiled: November 2, 1995Date of Patent: August 26, 1997Assignee: Japan Skyrobot Co., LtdInventor: Masumi Atsukawa
-
Patent number: 5639175Abstract: A threaded paper tube includes a multiple paper tube having an inner tube with spiral ridges on its outer surface, and an outer tube and a tightening robe each having grooves on their inner surfaces which are in the same pitch as the spiral ridges. The total length of the threaded paper tube may be changed by adjusting the screwing extent between the inner and outer tubes, and the total length may then be fixed by tightening the tightening tube against the outer tube. The ridges and grooves are provided as steps formed on the inner tube's outer surface, the outer tube's inner surface and the tightening tube's inner surface using a ribbon-like shaped paper material which is adhered and fixed at the same pitch on the surfaces of the tubes.Type: GrantFiled: March 21, 1996Date of Patent: June 17, 1997Assignee: Tanaka Shikan Co., Ltd.Inventor: Ryuichi Emoto
-
Patent number: 5620230Abstract: An adjustable hairdresser's chair is described. The chair includes a motor housing base which has a front shell and a rear shell interconnected by a bellows. A front seat is mounted on the front shell and a rear seat is mounted on the rear shell. The rear seat is vertically adjustable and horizontally adjustable relative to the front seat, while the front seat is horizontally rotatably adjustable, only. A first reversible drive controls the front seat unit. A second reversible drive vertically adjusts the rear seat unit and a third reversible drive controls the rear seat development relative to the front seat to change the distance therebetween.Type: GrantFiled: September 28, 1995Date of Patent: April 15, 1997Inventor: Jung-Te Wu
-
Patent number: 5615855Abstract: In an integrated telescoping mast-payload assembly, the payload forms the top telescoping section.Type: GrantFiled: December 9, 1994Date of Patent: April 1, 1997Assignee: Tri-Ex Tower CorporationInventors: Edward A. Marue, Kenneth J. Pereira
-
Patent number: 5593129Abstract: A telescoping multi-sectional mast in which the upper sections are extended and retracted in a controlled predetermined sequence and in which each section, when fully extended, is automatically and positively locked to the next lower section.The improved locking system includes a lock projection-lock engagement pair, one of the pair being carried on the outer surface of each of the upper sections of the mast and the other of the pair being carried on the upper ends of each of the intermediate sections. A lock actuator stud is carried on the upper end of each of the intermediate and bottom sections. This pair cooperates to operatively lock together in response to disengagement with the actuator stud carried on the next lower mast section, to restrain relative vertical movement between an upper section which is fully extended from the next lower section. The pair unlocks in response to engagement with the actuator stud carried by the next lower section.Type: GrantFiled: June 7, 1993Date of Patent: January 14, 1997Assignee: Tri-Ex Tower CorporationInventors: Daniel S. Adams, Gene R. Butler, Kenneth J. Pereira
-
Patent number: 5549499Abstract: An adjustable doll stand is provided with a threaded rod telescopically disposed in a hollow tube and with the rod and tube upstanding from a base element. Doll clamping arms are secured to the rod and can be raised or lowered by rotation of a ring threaded onto the rod. A detent formed in the hollow tube cooperates with a flat surface disposed on the rod to prevent rotation of the clamping arms.Type: GrantFiled: May 8, 1995Date of Patent: August 27, 1996Inventors: Jere N. Foskey, Jean C. Foskey
-
Patent number: 5490532Abstract: A collapsible shelter of the type having an awning and collapsible frame, the frame having either adjustable or fixed end caps at its corners bearing against reinforcing strips, and a center post unit forming a part of the frame is both spring-loaded and can be adjustably tensioned to regulate the tautness of the awning.Type: GrantFiled: July 8, 1994Date of Patent: February 13, 1996Assignee: Colorado Mineral Strike, Inc.Inventors: Steven E. Mallookis, Albert W. Gebhard
-
Patent number: 5427337Abstract: A dual drive mechanism for medical/dental chair comprising a single motor drive and a pair of linearly driven shafts. In one embodiment, the dual drive mechanism provides a self-locking, reliable and easily maintainable system for vertically displacing one portion of a medical/dental chair relative to another portion of the medical/dental chair. In other embodiments, the dual drive mechanism drives both shafts in a single direction to increase drive power, engages each shaft to a common part and drives both shafts in opposite directions to tilt or rock the common part and employs shafts having different drive ratios to drive separate parts at separate rates.Type: GrantFiled: January 15, 1993Date of Patent: June 27, 1995Assignee: MD, Inc.Inventor: Eugene S. Biggs
-
Patent number: 5299771Abstract: A mechanism used to control the vertical height as well as fore-aft position of a vehicle seat while presenting a minimum height profile when adjusted to minimum vertical elevation. The seat is connected to a pair of rails, one stationary and one reciprocable. A seat is affixed to an attachment bracket which is connected to the reciprocable rail by a vertical height adjuster comprising a vertically oriented screw jack which may be positioned to selectable heights by a motor. The fore-aft relationship of the rails may also be selectively adjusted by a motor driving a horizontally oriented screw jack. Both screw jacks incorporate a screw connected to a helical gear engaged to a worm gear. The worm gear is driven by a remote motor through a flexible drive cable. Both screw jacks present a structure which offers a minimum height profile when the seat is positioned at minimum vertical height.Type: GrantFiled: June 28, 1993Date of Patent: April 5, 1994Assignee: Rockwell International CorporationInventors: Mark D. White, Bartholomew J. Boelryk, Roger Freund
-
Patent number: 5282593Abstract: An adjustable leg for tables and other platforms includes elevating mechanism in the form of a plurality of screw members which are appropriately rotated and also includes rotation preventing mechanism telescopingly extending through the hollow portion of the screw members to hold the lower screw member non-rotatable so that the leg can move in extension and retraction. In this way, the leg solves the problem of having a sufficiently low elevation for the table when the legs are retracted and a sufficiently high elevation for the table when the legs are extended.Type: GrantFiled: June 5, 1992Date of Patent: February 1, 1994Assignee: Tri W-G, Inc.Inventor: Duane Fast
-
Patent number: 5222710Abstract: A mechanism used to control the vertical height as well as fore-aft position of a vehicle seat while presenting a minimum height profile when adjusted to minimum vertical elevation. The seat is connected to a pair of rails, one stationary and one reciprocable. A seat is affixed to an attachment bracket which is connected to the reciprocable rail by a vertical height adjuster comprising a vertically oriented screw jack which may be positioned to selectable heights by a motor. The fore-aft relationship of the rails may also be selectively adjusted by a motor driving a horizontally oriented screw jack. Both screw jacks incorporate a screw connected to a helical gear engaged to a worm gear. The worm gear is driven by a remote motor through a flexible drive cable. Both screw jacks present a structure which offers a minimum height profile when the seat is positioned at minimum vertical height.Type: GrantFiled: September 5, 1991Date of Patent: June 29, 1993Assignee: Rockwell International CorporationInventors: Mark D. White, Bartholomew J. Boelryk, Roger Freund
-
Patent number: 5163650Abstract: A telescoping multi-sectional mast in which the upper sections are extended and retracted in a controlled predetermined sequence an in which each section, when fully extended, is automatically and positively locked to the next lower section. The improved locking system includes a lock bar near the lower end of each lower section, a locking assembly on the upper end of each intermediate section and a lock actuator stud on the upper ends of each of the intermediate and bottom sections. The lock assembly includes an inwardly projecting collar, and rotatable disk having a locking projection segment formed on its periphery, a toggle responsive to vertical movement of the lock bar and stop actuated by the toggle for controlling rotation of the lock disk. The lock actuator stud and lock disk have mating engageable cam surfaces to cause and control rotation of the disk in response to vertical movement of each upper section relative to the next lower section.Type: GrantFiled: October 7, 1991Date of Patent: November 17, 1992Assignee: Tri-Ex Tower CorporationInventors: Daniel S. Adams, Gene R. Butler, Kenneth J. Pereira
-
Patent number: 5112019Abstract: A motorized IV pole system for controlling the height of an IV container to thereby control the infusion pressure in an IV tube includes a telescoping IV pole system. In one embodiment, comprising three concentric support members, the outer support member is fixed, the middle support member is reciprocable with respect to the outer support member and is driven by a rack gear attached thereto. An inner support member is reciprocatable in the interior of the middle support member and is driven by a cable attached to the outer support member passing over a pulley attached to the middle support member. The rack on the middle support member may be driven by a shaft to which is attached a hand crank and an AC motor. The AC motor may be driven by a programmable control system which includes an optical encoder to permit display of the height of the IV container. Also, preselected heights and various speeds of height adjustment may be utilized.Type: GrantFiled: February 4, 1991Date of Patent: May 12, 1992Assignee: Storz Instrument CompanyInventors: Michael E. Metzler, Michael S. Ameiss, James P. Baum
-
Patent number: 5078357Abstract: An electric seat lift mechanism is easily mounted or dismounted from a seat post receptacle by insertion of its depending tube into fixed (but removable) position into the seat post, the depending tube carrying an axially positioned drive nut which is engaged with a drive screw driven by an electric motor powered transmission whose housing supports the seat.Type: GrantFiled: October 16, 1990Date of Patent: January 7, 1992Assignee: Medical Resource Companies of AmericaInventor: Ronald J. Mosetich
-
Patent number: 4860987Abstract: A spindle for working chairs having an adjustable height comprises an inner tube (1) which is slidably inserted in an outer tube (3) and extends therefrom and is adapted to transmit the load from the chair seat to the outer tube. The inner tube (1, 1', 1") is lockable in a plurality of positions relative to the outer tube. The load is transmitted from the inner to the outer tube through a threaded spindle (10, 10', 10") which is coaxial with the tubes and is rotatably mounted in the outer tube (3), and the threads of which engage a nut (8) which is stationary with respect to the inner tube. The threaded connection formed between the nut and the spindle has a pitch which is sufficiently large for the connection not be self-locking when the nut (8) is moved axially, but still sufficiently small to allow a substantial part of the axial load to be transfered to the threaded spindle (10, 10', 10").Type: GrantFiled: February 18, 1986Date of Patent: August 29, 1989Assignee: Mec-Lift A.S.Inventor: Per G. Werner
-
Patent number: 4842233Abstract: A lifting mechanism provides double action movement of a ram member supported on a platform along a particular axis between a first lower position and a second higher position. The lifting mechanism includes the following: A motor having a drive shaft extending along an axis. At least one axial drive member is coupled to the platform to provide axial movement of the platform along the particular axis. Gear means is coupled to the drive shaft and the axial drive member to translate the rotary motion of the drive shaft about the perpendicular axis to motion of the axial drive member along the particular axis to provide the axial movement of the platform. A movable ram member is supported on the platfrom and is moveable relative to the platform along the particular axis so that axial movement of the platfrom provides simultaneous movement of the ram member along the particular axis to produce the double action movement of the ram member upon rotation of the motor.Type: GrantFiled: November 12, 1987Date of Patent: June 27, 1989Assignee: Dexta CorporationInventor: Mark M. Rusin
-
Patent number: 4757968Abstract: An apparatus for the implementation of a vertical movement for a chair, especially a patient chair is disclosed. This apparatus comprises a lift column (1) with an upper end suitable for mounting a chair, a tubular shell construction (2) against which the lift column (1) is telescopically supported, a threaded member (5) whose rotation enables elevation and lowering of the lift column (1), and a motor (4) for rotating the threaded member (5). In the apparatus according the lift column (1) has a polygonal cross section, and it receives for each of its sides a support incorporating a spring action and sliding bearing contact by support braces (3) mounted to the inner surface of the shell construction (2). The apparatus achieves a vibration-free lift movement.Type: GrantFiled: February 10, 1987Date of Patent: July 19, 1988Assignee: Orion-Yhtyma OyInventors: Ilmari Kinanen, Matti Smalen
-
Patent number: 4752102Abstract: Apparatus having telescoping box-like cage sections and capable of raising a person or object to a desired height and solidly supporting same at such height, the relative movement of the sections being guided by pre-loaded rollers bearing against vertical guide surfaces provided by the flanges of angle iron members forming the vertical edges of the cage sections. A method is disclosed for assembling the apparatus with the rollers pre-loaded against the cooperating guide surfaces by clamping the angle iron members of the outer cage inwardly before connecting them with cross members under tension.Type: GrantFiled: April 14, 1986Date of Patent: June 21, 1988Inventor: Keith O. Rasmussen
-
Patent number: 4655426Abstract: An adjustable leg for supporting a table top whereby the height can be raised or lowered comprises a metal tube defining the leg within which is mounted a screw threaded rod. A square opening in one side of the wall of the tube exposes the teeth of a gear member which can be rotated and carries a screw thread for cooperation with the rod to raise and lower the table top. Collars on either side of the gear member provide bearing surfaces for axial movement of the rod and for rotational movement of the gear member. The gear member can have two separate axially spaced sets of teeth, one for cooperation with an electric motor drive gear and the other for cooperation with a manually operable ratchet device. The ratchet device and electric motor are alternatives and each of which can be mounted in a housing for clamping around the tubular leg.Type: GrantFiled: June 24, 1985Date of Patent: April 7, 1987Assignee: Eutec Ltd.Inventors: F. Olaf von Dulong, Richard W. Herr
-
Patent number: 4635492Abstract: A telescopic assembly is provided, which includes an inner tube, in which a motor having a hollow output shaft and a spindle secured thereto connects an outer tube through a drive tube.Type: GrantFiled: February 19, 1985Date of Patent: January 13, 1987Assignee: Magnetic Elektromotoren A.G. LiestalInventor: Hugo Uebelhart
-
Patent number: 4627602Abstract: A mechanical lifting device, preferably for a chair seat, comprising two reciprocally telescoping parts, one of which is attached to a chair support, whereas the other part is attached to the chair seat, both parts being mutually spring loaded, a locking screw being pivoted to the first part inside one of its ends and revolving about the longitudinal axis of the part, that the second part comprises an outer locking tube coaxially surrounding a hollow pressure rod and a number of locking nuts, e.g. three, intended for engagement with the locking screw and provided inside the locking tube, the locking nuts being mutually spring loaded and when the pressure rod is actuated enabling the locking screw to turn relative to the locking nuts when they move in the longitudinal direction of the lifting device, thereby the mutual position of the two parts is also changed. When actuation of the pressure rod stops a locking engagement is achieved between locking nuts and locking screw by the aid of the mutual spring load.Type: GrantFiled: May 31, 1985Date of Patent: December 9, 1986Assignee: Hag A/SInventor: Claus L. Sporck
-
Patent number: 4613106Abstract: An adjustable support column for chairs, stools, tables or other furniture items in which a support tube telescopically receives a mounting cylinder. The mounting cylinder is seated on a diamond threaded support rod in the support tube by means of one or more drive nuts and a locking nut. A clutch selectively releases the locking nut to permit longitudinal adjustment of the mounting cylinder relative to the support tube. The diamond threaded support rod is connected to a power spring which stores energy as the support rod is rotated in one direction to cause a return of the support rod to its initial position when the locking nut is released.Type: GrantFiled: April 25, 1985Date of Patent: September 23, 1986Inventor: Lino E. Tornero
-
Patent number: 4581863Abstract: A variety of roof-mounted support apparatuses for supporting ducts, air conditioning units, roof access ladders, and walk-ways, each apparatus including a base plate mounted below the roof insulation, a vertical support member connected to the base plate and extending upwards therefrom, and a sleeve member that extends about the support member and has a flange extending outwardly from its bottom end. The flange is arranged above the insulation for the roof. A hollow cap member has an open bottom and fits on and over an upper end portion of the sleeve member. A threaded connecting member extends downwardly from a horizontally extending section of the cap member and is located within the cap member. The support member has means for threadedly receiving the connecting member and for thereby detachably connecting the cap member to the support member.Type: GrantFiled: September 6, 1984Date of Patent: April 15, 1986Inventor: Kenneth Thaler
-
Patent number: 4576352Abstract: A treadmill exercising apparatus of the inclineable slider bed type in which the apparatus frame at its head end is equipped with a cross member that is coupled to a pair of spaced apart threaded screw members for changing the inclination of the treadmill frame, in which the coupling of the frame cross member to the respective threaded screw members is by way of special nut assemblies that each include a tubular member or shell fixed to the respective ends of the frame cross member, a lower nut member that is keyed to the tubular member involved at that end of the cross member, and is in load transmitting relation to the screw member it engages, and on which, the respective tubular members rest, and an upper nut member that is keyed to the respective tubular members for lost motion movement relative thereto, but which is not in load transmitting relation to the respective screw members, whereby the upper nuts are free to float longitudinally of the respective screw members to accommodate tolerance variationsType: GrantFiled: September 27, 1982Date of Patent: March 18, 1986Assignee: Ajay Enterprises Corp.Inventor: Ralph Ogden
-
Patent number: 4548051Abstract: A cryostat microtome apparatus comprises a cooling enclosure which can be set to a predetermined internal temperature and a microtome disposed in the enclosure. The enclosure is supported on a support assembly which is vertically adjustable to permit stepless adjustment of the height of the enclosure, for adaptation to operator requirements. A mechanical actuating assembly and/or a gas spring assembly is provided for height adjustment of the apparatus.Type: GrantFiled: February 1, 1983Date of Patent: October 22, 1985Assignee: Parke, Davis & CompanyInventor: Gerhard Moessner
-
Patent number: 4509382Abstract: An automotive vehicle power-actuated seat adjuster assembly includes a screw type height adjustment apparatus employing a nut held axially but rotatable under applied torque within spaced antifriction bearings, one of which bearings is an element molded of low friction polymeric material formed with elastic thrust absorbing legs deflectable to provide up to a predetermined amount of axial preload in the screw and nut elements.Type: GrantFiled: March 25, 1983Date of Patent: April 9, 1985Assignee: General Motors CorporationInventors: Albert J. Colautti, Hans J. Borlinghaus
-
Patent number: 4352479Abstract: A work surface is supported for adjustment in a vertical direction by a device which includes a base and an angle post upstanding therefrom with a column mounted for sliding movement in engagement with the post. The work surface is mounted on an upper end of the column which is moved slidably by manual movement of a ratchet type mechanism and which is maintained in engagement with the post by an arrangement which provides for three dimensional as well as torsional stability. The work surface is provided with a further degree of mobility by mounting an axle and wheels on the base in such a way that the axle is moveable between a rest position in which the base rests on a floor and a mobile position in which the base is spaced above the floor by the wheels which ride thereon.Type: GrantFiled: March 6, 1980Date of Patent: October 5, 1982Assignee: Western Electric Company, Inc.Inventor: Ivan B. Chapman, Jr.
-
Patent number: 4348051Abstract: A seat has a foot-rest which is adjustable in height in simple manner by reason of the fact that it is pivoted on one of the threaded portions already present either on a column fast to a base or on a support fast to a seat proper.Type: GrantFiled: November 12, 1980Date of Patent: September 7, 1982Assignee: La Telemecanique ElectriqueInventor: Guy Boucher
-
Patent number: 4285488Abstract: A swivel chair having a main screw connected to the chair seat and rotatably supported in a mounting assembly on the chair base enabling rotation of the seat relative to the base without varying the height of the seat. Height adjusting apparatus provides for the selective adjustment of the height of the chair seat and includes a nut member threadably mounted on the screw member. The nut member has a thread that is deformed into frictional engagement with the screw thread and when a seating load is applied to the nut member, the magnitude of the frictional resistance of the nut to turning on the screw is increased. As a result, rotation of the chair seat and the screw member will cause the nut member to rotate relative to the mounting assembly and remain fixed relative to the screw member to prevent an unintended varying of the height of the chair seat when it is rotated during use, while still enabling manual intended rotation of the nut when the chair height is to be adjusted.Type: GrantFiled: March 20, 1979Date of Patent: August 25, 1981Assignee: Hoover Universal, Inc.Inventor: William L. Hancock
-
Patent number: 4279398Abstract: A versatile helmsman chair is installed on a yacht in a cabin which serves both as a pilot house and a lounge. This helmsman chair is adjustably supported to be used at normal seating height above the lounge deck and to be rotated in any direction when a yacht is docked or anchored, and to be used at an elevated seating height above the lounge deck providing the helmsman with an excellent view, when the yacht is underway. This helmsman chair is distinguishable from others with respect to an electrically powered screw jacking gear assembly pivotally supporting the helmsman chair in the selective positions at and between the docked or anchored and underway positions.Type: GrantFiled: May 29, 1979Date of Patent: July 21, 1981Inventor: Lester W. Pregnall
-
Patent number: 4253632Abstract: A novel base portion for a tiltable chair. The base portion comprises a chair control adapted to control the tilting of the chair, a threaded cylindrical post secured to the chair control and extending vertically downward, an outer, vertically aligned tubular sleeve around the cylindrical post, a bell assembly mounted on the cylindrical post above the tubular sleeve and adapted to control the height of the chair, an alignment means adapted to align the tubular sleeve in a vertical position relative to the cylindrical post with the alignment means mounted on the cylindrical post inside the tubular sleeve, and a plurality of radially extending legs adapted to support the chair with their inner ends secured to the alignment means.Type: GrantFiled: September 11, 1978Date of Patent: March 3, 1981Inventor: Frank Doerner
-
Patent number: 4181280Abstract: A bell assembly is shown for adjusting the height of a chair base. The bell assembly is threaded onto a support post slidably located in a hub and the bell assembly is turned to regulate the height of the support post relative to the hub. The bell assembly includes a spring retaining clip for engagement with the hub to prevent axial separation of the support post and the hub when the chair is lifted. The spring retaining clip includes a C-shaped base portion which engages a bell nut in the bell assembly to prevent longitudinal movement of the retaining clip relative to the bell assembly. The bell assembly also includes a bell housing having a wall portion located adjacent to the retaining clip base portion to prevent rotational movement thereof and disengagement of the retaining clip and bell nut.Type: GrantFiled: March 8, 1978Date of Patent: January 1, 1980Assignee: Faultless-Doerner Manufacturing Inc.Inventor: Vincent G. Bowman
-
Patent number: 4175600Abstract: A dispenser apparatus for delivering water to a chemical or agricultural tank wherein a base plate is provided to removably attach the dispenser to the tank. An upstanding screw-threaded pedestal member extends from the base plate and carries a valved dispensing line that may be pivoted with regard to the horizontal as well as adjusted vertically. The screw-threaded pedestal member also allows the dispensing line to be revolved to any desired horizontally disposed dispensing position.Type: GrantFiled: May 11, 1978Date of Patent: November 27, 1979Inventor: Sherwin Wallick
-
Patent number: 4148475Abstract: A device adapted to receive sheets serially from a machine and sort the sheets in a predetermined manner. The device includes a receiver portion movable relative to the machine to position any one of a number of shelves in the receiver portion to receive a sheet discharged by the machine. A threaded rod fixed along one side of the receiver portion and axially slidably engaged in bearings, together with relativey slidable portions of a latch assembly on the other side of the receiver provide means for guiding movement of the receiver portion. A nut threadably engaging the rod and fixed against axial movement may be rotated by a drive mechanism to move the receiver portion in a predetermined pattern, thereby causing a desired sorting of sheets in its shelves. By releasing the latch the receiver portion may be pivoted about the rod away from the machine to afford clearing or servicing mechanisms therebetween.Type: GrantFiled: August 12, 1977Date of Patent: April 10, 1979Assignee: Minnesota Mining and Manufacturing CompanyInventor: Leo J. Schulz
-
Patent number: 4111217Abstract: A support which includes two or more pole sections hingedly interconnected by a hinge permitting the support to be folded for storage purposes. At least one of the pole sections has a pair of portions disposed in telescopic relation for sliding movement providing a fast coarse adjustment to the length of the support. The sliding movement is lockable at various relative positions by a quick release coupling which, upon locking the sliding telescopic movement, converts to a screw thread fine adjustment for changing the length of the support. A releasable lock mechanism is also provided for locking the pole sections when they are in line in an end-to-end position.Type: GrantFiled: June 17, 1977Date of Patent: September 5, 1978Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National DefenceInventor: William E. Victor
-
Patent number: 4030749Abstract: A seat assembly for a locomotive cab or the like which comprises a seat portion, a back portion pivoted at the rear of the seat portion, a shaft which is downwardly dependent from the seat portion, the shaft including means to enable rotation of the seat and back portions about the shaft and adjustment of the height thereof, a sleeve in which the shaft is journaled, means to lock the shaft relative to the sleeve into selected radial and vertical positions of the seat and back portions, and means for wall mounting the seat assembly on the wall of the cab.Type: GrantFiled: December 15, 1975Date of Patent: June 21, 1977Assignee: Mount Royal Transportation Equipment Ltd.Inventor: Charles Strahm
-
Patent number: 4018217Abstract: An arm and hand rest device for performing microsurgery, such as an eye operation, on a patient lying on an operating table, the device having a board placed on the operating table beneath the upper body portion of the patient so that the weight of the patient will hold the device firmly in place. Two tables are disposed at the head end of the board and each includes a platform on which the hands and arms are rested while the surgeon uses a scalpel or other instrument in performing the operation. The tables are spaced from one another to define the area in which the patient's head is placed for the operation, and the platforms are adjustable vertically and have projections at the top end extending toward one another.Type: GrantFiled: November 20, 1975Date of Patent: April 19, 1977Inventor: Daniel R. Evans
-
Patent number: 3993280Abstract: A drafting stool having electric motors both for moving it along the floor parallel to the forward edge of a drafting table, and for changing the elevation of the seat. Provision is made for guiding its travel along the floor, for preventing overturning thereof, for initiating any desired adjusting movement by the occupant's lurching of his weight in various directions, and for bringing the stool to a halt at any desired position of adjustment either manually, or by means of preset limit control devices.Type: GrantFiled: November 10, 1975Date of Patent: November 23, 1976Assignee: Paul R. DistlerInventor: Richard M. Surbaugh