Abstract: An adjustable positioning structure of a shaft member contains an inner tube including a plane having plural holes, an outer tube including a cutout to receive the inner tube, an adjustable positioning device including a fixing seat, and a retaining block formed in a twisted piece shape and axially defined between two extending sides of the fixing seat. The retaining block includes a pressing portion and a bore fixed on one end thereof, and includes a lock tab extending outward from another end thereof. A stop switch is covered by the fixing seat and includes a shoulder to be inserted in the bore to stop the retaining block to be pressed and to operate. An resilient element is defined between the retaining block, and the stop switch to contact with the retaining block, so that the lock tab is retained in one of the holes.

Abstract: A locking mechanism for poles includes a support rod, inserted into a first unit shaft at a first end thereof and locked to a second unit shaft at a second end thereof, with threads formed around the outer circumferential surface thereof; and a pressure locking unit movably engaged with the threads of the support rod and having longitudinal slits formed to open in one direction and at least two pressure parts formed in a longitudinal direction. The locking pressure of the pressure locking unit is imposed on the unit shafts at multiple longitudinally spaced points, thus dispersing or distributing the locking strength in the longitudinal direction and increasing both the locking strength and the resistance against both longitudinal compressive force and longitudinal tensile force, thereby preventing the locked unit shafts from suddenly slipping towards each other.

Abstract: A rapid locking hand knob construct includes a fixed threaded sleeve having an inner groove around its outer diameter that is mated to a rubber sleeve. One end of a first tube is connected to an inside diameter of one end of a fixed ring. The fixed ring has a groove provided around an outside diameter at an end thereof and an inner conical surface provided around an inside diameter at another end thereof. The tube hole at the end of a second tube is mated to a locking lining, wherein one end thereof includes an outer tapered surface that is inserted into an inner tapered surface of the fixed ring. A hole on the fixed threaded sleeve is secured into the groove of the fixed ring by a screw. A rotary rubber sleeve drives the movable thread sleeve up and down horizontally in the direction of the tube fitting.

Abstract: A machining tool comprises a frame mounting an extendable yoke slidable with respect to the frame in a first direction through one or more mounting pillars. A tool motor is mounted on the yoke. A drive mechanism for the yoke is also mounted in the frame, with a drive motor to drive the yoke drive mechanism. A belt is between pulleys on the drive motor and mechanism to transmit drive between them. A rotatable sleeve is around the tool motor and on which sleeve the belt engages on opposite sides of the tool motor, whereby the tool motor can extend between the drive motor and mechanism, thereby resulting in a compact arrangement of the tool.

Abstract: A lattice support structure has lattice bars pivotally connected to one another and extending in the longitudinal direction of the lattice support structure as well as lattice bars connecting them, with the connecting lattice bars being connected directly or indirectly to the lattice bars extending in the longitudinal direction such that the spacing of the lattice bars extending in the longitudinal direction of the lattice support structure can be decreased on the inward folding of the lattice support structure and increased on the folding apart of the lattice support structure.

Abstract: A bicycle seat adjustable device includes an outer tube and an inner tube inserted into the outer tube. A piston seat and a clamp unit are connected to the inner tube. A valve unit extends through the piston seat and is located in the inner tube. The valve unit includes a rod extending through the piston seat and reaches the bottom end of the outer tube. A control unit has a control unit connected to the bottom end of the outer tube and an action unit is located outside of the outer tube. The control unit has a push member connected with the rod. The action unit has a cable extending through the outer tube and connected to the push member. A switch is connected to the cable. The push member is indirectly moved to move the rod to control the hydraulic path in the piston seat by pulling the cable.

Abstract: A longitudinally adjustable assembly for a bicycle seat has a seat tube, a seat post and an auxiliary hoop device. The seat tube has an inner surface and multiple longitudinal grooves formed in the inner surface of the seat tube. The seat post is slidably inserted into the seat tube and has an outer surface and multiple protrusions. The protrusions are formed on and protrude out from the outer surface of the seat post. The protrusions are respectively slidably mounted in the longitudinal grooves to allow the seat post to longitudinally move along the seat tube. The auxiliary hoop device is mounted securely with the seat tube and around the seat post. Because the protrusions are slidably mounted in the longitudinal grooves and the auxiliary hoop device provides a pressing force for the seat post, a relative rotation between the seat post and the seat tube can be avoided.

Abstract: A telescoping support stand comprising a first tube partially defining a first enclosed area and a second tube partially defining a second enclosed area. A first end of the second tube may be telescopically slidable within the first tube. The telescoping support stand may also comprise a first locking mechanism attached to the second tube. The first locking mechanism may releasably secure the first tube to the second tube. The telescoping support stand may also comprise a first air exchange aperture dimensioned to allow air to flow between the first and second enclosed areas. The telescoping support stand may further comprise a release mechanism and a release rod attached to the first locking mechanism. The release mechanism may comprise a displacement member adjacent to the release rod, the displacement member being configured to displace the release rod and release the first locking mechanism.

Abstract: A safety post mountable in a post holder includes an elongate tubular member and a locking device arranged inside of the tubular member. The locking device includes a lever and a bias spring device biasing the lever against an inner surface of the wall of the tubular member. The lever has a lock protrusion and a release protrusion extending through a first and second aperture portions of the wall, respectively. The lock protrusion is retractable to a release position inside of an outer surface of the tubular member by operation of the release protrusion in a counter biasing direction. The release protrusion has a support surface arranged to support the safety post against a support surface of the post holder, and the release protrusion is related to the lock protrusion such that, in the release position, the release protrusion is still protruding from said outer surface to an extent.

Abstract: A hood prop is adjustable by rotation and without tools. A base rod 33 fits into a hollow friction rod 34 and may be twisted in a first direction to lock in place and in a second opposite direction to loosen for adjustment. A base screw 32 secures a free floating friction piece 31 and a threaded base piece 30 to a threaded base rod 33. The treaded base rod 33 may be inserted into the hollow friction rod 34 and then twisted. The rotation causes the free floating friction piece to press upon the inside wall of the hollow friction rod. The slant surfaces of the free floating friction piece and threaded base piece help move an extended section 40 of the friction piece into the inner wall of the hollow friction rod. The use of two slant surfaces 61 on the threaded base piece 30 facilitates quick response to rotation in either direction.

Abstract: This disclosure pertains to a lockdown mechanism for an electric drive screw telescoping mast. The lockdown mechanism comprising a plurality of elongated tube sections which are telescopingly attached to each other, each tube section comprising a substantially hollow body. An elongated drive screw is disposed within the hollow body and includes a plurality of threads for extending and retracting the elongated tube sections. A lock subassembly includes a housing and a center hub, the housing comprises a load bearing top and a hollow cavity, the lock subassembly being rigidly attached to said center tube and axially aligned along a central axis with said plurality of elongated tube sections. The center hub is movably engaged within the hollow cavity of the housing and includes at least one locking pin adapted to the center hub that is movably engaged to the structural envelope when the mast is in the lockdown position.

Abstract: A mechanism and system for reversibly locking together concentric tubular components uses a projection on the outer tube for interacting with a component having a taper. When the larger outer tubing is forced along the inner tubing towards a limiting opening, a tapering section of the tube assembly is forced against the projection, thereby reversibly forcing the paired tubes into a locked position. The tubing can be unlocked by exerting pressure with one hand to separate the projection from the tapered section, thereby unlocking the tubing. Optionally, a second hub segment rides on the outer tube, and latches with a simple manual snap fit to the first hub segment. The mechanism and system is useful for locking and unlocking concentric tubing within a medical instrument, while leaving one hand free for other parts of a procedure.

Abstract: An extension tool is disclosed and comprises a first pole and a second pole. The second pole is slidably received within the first pole. The second pole has a plurality of apertures. A pin lever is pivotably mounted relative to the first pole. A pin slidably engages within the pin lever. The pin lever is released for inserting the pin into the plurality of apertures of the second pole for terminating displacement of the first pole relative to the second pole. The pin lever is depressed for removing the pin from the plurality of apertures of the second pole for permitting displacement of the first pole relative to the second pole. A device, tool or support may be secured to the second ends of the second pole. In one embodiment, a claw is secured to the second end of the second pole for engaging either a knuckle coupler or a wheel brake of a railroad car.

Abstract: Method and arrangement for providing a load carrier mountable on a carrying vehicle. The arrangement includes an elevating structure arranged between a base portion and a load supporting portion. The elevating structure is adapted to expand and contract between raised and lowered configurations. The elevating structure includes two substantially upright members, each of which is slidably moveable relative to the other for establishing the raised and lowered configurations. A fixing device is provided for releasably fixing the two sliding members one to the other. The fixing device includes a blocking member that is insertible in aligned receivers, one each of the aligned receivers being formed in each of the two sliding members for preventing expansion and contraction of the elevating structure. The fixing device further includes a take-up arrangement that is configured to press one of the two upright members against the other thereby forming a releasable friction fit therebetween.

Abstract: An adjustable joint for a flat object is disclosed. The adjustable joint includes an extending portion connected to the flat object, a fixed portion, and a resilient portion connected to the extending portion and the fixed portion. The resilient portion includes a joint member connecting the extending portion and the fixed portion, a latching member received in the joint member and latching the extending portion, an operating lever rotatably connected to the joint member and configured for adjusting the tightness of the extending portion and, a connecting member connecting the latching member and the operating lever, wherein when the operating lever is rotated, the connecting member drives the latching member to grasp or release the extending portion.

Abstract: A nut assembly for quick adjustment of axial position relative to a threaded shaft. The nut is formed in two, physically separate sections, each having a surface portion with threads for mating engagement with the shaft. Each nut section is pivotally mounted to a bushing which surrounds the threaded shaft for movement of the nut threads into and out of engagement with the shaft threads. The sections are moved about their pivotal mountings by movement of a second bushing axially with respect to the first bushing through cooperative conical surfaces on the second bushing and on each of the nut sections.

Abstract: A telescoping support stand comprising a first tube partially defining a first enclosed area and a second tube partially defining a second enclosed area. A first end of the second tube may be telescopically slidable within the first tube. The telescoping support stand may also comprise a first locking mechanism attached to the second tube. The first locking mechanism may releasably secure the first tube to the second tube to prevent longitudinal movement of the first tube relative to the second tube. The telescoping support stand may also comprise a first air exchange aperture dimensioned to allow air to flow between the first and second enclosed areas. The telescoping support stand may further comprise a release mechanism and a release rod attached to the first locking mechanism. The release mechanism may comprise a displacement member adjacent to the release rod, the displacement member being configured to displace the release rod and release the first locking mechanism.

Abstract: The present invention proposes a locking mechanism for poles. The locking mechanism includes a support rod, inserted into a first unit shaft at a first end thereof and locked to a second unit shaft at a second end thereof, with threads formed around the outer circumferential surface thereof; and a pressure locking unit movably engaged with the threads of the support rod and having longitudinal slits formed to open in one direction and at least two pressure parts formed in a longitudinal direction. The locking pressure of the pressure locking unit is imposed on the unit shafts at multiple longitudinally spaced points, thus dispersing or distributing the locking strength in the longitudinal direction and increasing both the locking strength and the resistance against both longitudinal compressive force and longitudinal tensile force, thereby preventing the locked unit shafts from suddenly slipping towards each other.

Abstract: The present invention proposes a locking mechanism for poles. The locking mechanism includes a support rod, inserted into a first unit shaft at a first end thereof and locked to a second unit shaft at a second end thereof, with threads formed around the outer circumferential surface thereof; and a pressure locking unit movably engaged with the threads of the support rod and having longitudinal slits formed to open in one direction and at least two pressure parts formed in a longitudinal direction. The locking pressure of the pressure locking unit is imposed on the unit shafts at multiple longitudinally spaced points, thus dispersing or distributing the locking strength in the longitudinal direction and increasing both the locking strength and the resistance against both longitudinal compressive force and longitudinal tensile force, thereby preventing the locked unit shafts from suddenly slipping towards each other.

Abstract: An adjustable height seat post for bicycles that comprises an inner tube slidably contained within an outer tube which supports a bicycle seat. The outer tube clamps into a bicycle frame and contains a spring which acts to force the inner tube upward. The inner tube is allowed longitudinal movement within the fixed outer tube via a locking mechanism that forces ball bearings into pockets or channels on the inner tube. The locking mechanism can be remotely activated with a handlebar mounted lever or manually with a seat post mounted lever.

Abstract: An elevating mechanism includes a sleeve having a first end and a second end, and an elevating component installed inside the sleeve and having a third end and a fourth end. When the elevating component is located in a first position relative to the sleeve, a main spring is compressed by the elevating component at a first deformation. When the component is located in a second position relative to the sleeve, the main spring is compressed by the elevating component at a second deformation. The first deformation is greater than the second deformation. When the elevating component is located in the first position relative to the sleeve, a complementary spring is compressed at a third deformation. When the component is located in the second position relative to the sleeve, the complementary spring is compressed at a fourth deformation. The third deformation is greater than the fourth deformation.

Abstract: According to one aspect of the present invention there is provided an adjustable mechanism for connecting two or more shafts, including at least a first shaft having an external surface with an outer diameter and a second shaft which is hollow at a first end, wherein a spring is anchored to the first end of the second shaft, the spring having an inner diameter of similar dimensions to the outer diameter of the first shaft, the spring configured such that when a force is applied to the spring its inner diameter is greater than the outer diameter of the first shaft so that the second shaft can move over the first shaft to a desired position relative to the first shaft, and when the force is no longer applied to the spring it is biased to return to its original inner diameter to bear against the external surface of the first shaft.

Abstract: In at least one embodiment, an apparatus (1) that comprises a compression sleeve element (2) established at least partially around portions of a first elongated member (6) that telescopes from a larger elongated member (8) in which it may nest. A relative motion obstruction element (4) may disallow only certain types of motion, e.g., rotational and axial, of the compression sleeve element relative to the elongated members around which it may be at least partially established. As it may be the compression enhancement element (3) —which may be used to generate a retaining compression force element—that prevents perpendicular displacement of the compression sleeve element, deactivation and effective disengagement of the compression enhancement element may allow for a quick removal of the compression sleeve element without requiring that it be slid off an end of either elongated member.

Abstract: A swiveling locking mechanism of a telescopic rod of a mop, including: an internal clamping sleeve, an external clamping cylinder, and a U-shaped locking arm. The external clamping cylinder is mounted on the internal clamping sleeve and the lower portion of the external clamping cylinder is constructed as a trumpet-shaped opening mounted from top to bottom on the conic body. The U-shaped locking arm includes an eccentric cam is provided with a mounting hole corresponding to the axle hole of the internal clamping sleeve. Thus, when moving downward the U-shaped locking arm, the external clamping cylinder rises, and the trumpet-shaped opening of the external clamping cylinder is brought in a loosened position.

Abstract: A bicycle saddle height adjustment apparatus that is mounted on the frame of a bicycle, for adjusting the height of a bicycle saddle. The bicycle saddle comprises a seat post that supports a bicycle saddle and is adapted to fit telescopically within the seat tube of a bicycle frame; a height adjustment mechanism mounted on the seat tube of a bicycle, for adjusting the saddle height; and a spring connected between the seat post and the height adjustment mechanism. Actuating the height adjustment mechanism enables a cyclist to safely and quickly adjust the height of a bicycle saddle while continuously operating said bicycle.

Abstract: Apparatus and methods for moving a tubular member to and from an elevated drilling rig floor. A support structure has an elongate indentation in its upper surface. A ramp assembly comprises telescoping assemblies having nested tubular elements extendable between retracted and deployed positions, thus forming a guide extending from the elongate indentation towards the drilling rig floor. Indexers may urge the tubular member towards or away from the elongate indentation. Kickers may urge the tubular member into or out of the elongate indentation, and may be operable via actuators which also operate the indexers.

Abstract: The present invention proposes a locking mechanism for poles. The locking mechanism includes a support rod, inserted into a first unit shaft at a first end thereof and locked to a second unit shaft at a second end thereof, with threads formed around the outer circumferential surface thereof; and a pressure locking unit movably engaged with the threads of the support rod and having longitudinal slits formed to open in one direction and at least two pressure parts formed in a longitudinal direction. The locking pressure of the pressure locking unit is imposed on the unit shafts at multiple longitudinally spaced points, thus dispersing or distributing the locking strength in the longitudinal direction and increasing both the locking strength and the resistance against both longitudinal compressive force and longitudinal tensile force, thereby preventing the locked unit shafts from suddenly slipping towards each other.

Abstract: A fixing device for an extension tube of an exercise includes an outer tube and an inner tube received in the outer tube, wherein the extension tube extends through the inner tube. A quick release device laterally mounted to an outer periphery of the outer tube. The quick release device extends through the outer tube and the inner tube to quickly fixing/releasing the extension tube when adjusting the stretching distance of the extension tube.

Abstract: In various embodiments, the system includes a tubular female end portion of the first pole section and a male end portion of the second pole section that is insertable into the female end portion. Additionally, the system includes a locking nut including a body portion and a neck portion and is threadingly engaged with the male end portion. Furthermore, the system includes a biased locking sleeve assembly that includes a locking sleeve having an internal cavity such that the locking sleeve fits over the locking nut neck portion, and a biasing device located within the interior cavity of the locking sleeve for applying opposing forces to the locking nut and the locking sleeve.

Abstract: A telescopic adjustable positioning device comprises an outer sleeve; a telescopic tube receiving into the outer sleeve at one end thereof and having a plurality of positioning holes; a retaining seat being a hollow tube and enclosing a connection of the outer sleeve and the telescopic tube; one side of the retaining seat being formed with a receiving portion; a slot being formed in the receiving portion; and a bottom side of the slot having a through hole which is smaller than the slot; a pin capable of passing through the retaining seat and the outer sleeve to be retained to the positioning hole of the telescopic tube; and an operation unit assembled to the receiving portion of the retaining seat. The pin is received in the slot and the through hole; and two springs are attached to the pin.

Abstract: An extension device includes the first tubular member, the second tubular member movably inserted into the first tubular member, and the third tubular member movably inserted into the second tubular member and a regulating device that regulates movement of the third tubular member with respect to the second tubular member. The regulating device includes a regulating member protruding from the inner hole portion to the outside of the third tubular member band is brought in the outer hole portion, and a pressing member for pressing the regulating member in the protruding direction.

Abstract: A longitudinally adjustable assembly for a bicycle seat has a seat tube, a seat post and an auxiliary hoop device. The seat tube has an inner surface and multiple longitudinal grooves formed in the inner surface of the seat tube. The seat post is slidably inserted into the seat tube and has an outer surface and multiple protrusions. The protrusions are formed on and protrude out from the outer surface of the seat post. The protrusions are respectively slidably mounted in the longitudinal grooves to allow the seat post to longitudinally move along the seat tube. The auxiliary hoop device is mounted securely with the seat tube and around the seat post. Because the protrusions are slidably mounted in the longitudinal grooves and the auxiliary hoop device provides a pressing force for the seat post, a relative rotation between the seat post and the seat tube can be avoided.

Abstract: A telescoping pole assembly for an erectable, collapsible shelter, includes first and second hollow telescoping sections slidably connected together, the first telescoping section being slidably disposed within the second telescoping section, and a spring loaded detent pin mounted to the second telescoping section. A weighted internal stop member is slidably disposed within the first telescoping section for movement between a first position and a second position. The internal stop member blocks the spring loaded detent pin in the first position, and the internal stop member does not block the spring loaded detent pin in the second position.

Abstract: An aircraft seat has an adjustable armrest in which the armrest platform is supported by a hinged attachment to an armrest support member. The hinged attachment between the armrest platform and the arm support member is located at the wrist-end of the arm support member near the aircraft control stick. The armrest platform and the armrest support are locked into position by means of telescoping struts that are controlled at the wrist-end of the arm platform member. The telescoping struts can be selectively locked to create triangular and/or quadrilateral trusses that lock the armrest firmly into position and may include springs or other elements to bias the armrest platform up and forward so that the armrest “floats” when the telescoping struts re released.

Abstract: The invention relates to a coupling device (14) intended to connect first and second elements (4, 5) which can move relative to one another, comprising a connecting rod (16) coupled to the first and second movable elements (4, 5) at first and second ends (18, 19) respectively, at least one of the ends of the connecting rod (16) having a head (22) intended to cooperate with locking means (23) belonging to the corresponding movable element (5) so as to removably fasten the connecting rod (16) to the corresponding movable element (5), characterized in that the coupling device (14, 15) comprises at least one telescopic guide member (25) serving to support and guide the connecting rod (16) during the movement of the movable elements (4, 5), having first and second ends (28, 26) intended to be attached to first and second support elements (23, 16) respectively.

Abstract: Embodiments of the present invention include a track fitting assembly comprising a main body, at least one pre-loaded stud assembly, and a track comprising a pair of lips. The at least one pre-loaded stud assembly comprises a stud and a compressing device. The at least one pre-loaded stud assembly comprises a clamped position, wherein the stud is coupled to the pair of lips and does not contact the compressing device. The at least one pre-loaded stud assembly also comprises an unclamped position, wherein the stud contacts the compressing device and does not contact the pair of lips. Other embodiments include the main body, at least one shear plunger assembly, and the track comprising the pair of lips, where the pair of lips comprise at least one circular opening. The at least one shear plunger assembly comprises a shear pin and a button. The at least one shear pin assembly comprises an disengaged position, wherein the button extends from the main body and the shear pin is positioned within the main body.

Abstract: A coupling structure of a telescopic rod includes an inner tube, an outer tuber and a positioning device. The positioning device includes a rotatable lid, a resilient sleeve, a metallic ring and a C-shaped sleeve. The C-shaped sleeve has a plurality of mini-ribs formed on an inner wall thereof. The mini-ribs are attached to the inner tube for providing a non-slip effect. The mini-ribs have less resistance with respect to the inner tube to provide a fine adjustment when the inner tube is extended or retracted with respect to the outer tube. An enlarged portion formed at a distal end of the inner tube is adapted to keep a proper gap between the inner tube and the outer tube for enhancing the steadiness of the telescopic rod. The rotatable lid is turned clockwise or counterclockwise for controlling the resilient sleeve, the metallic ring and the C-shaped sleeve to switch the inner tube in an adjustable state or in a fixed state.

Abstract: The present invention proposes a locking mechanism for poles. The locking mechanism includes a support rod, inserted into a first unit shaft at a first end thereof and locked to a second unit shaft at a second end thereof, with threads formed around the outer circumferential surface thereof; and a pressure locking unit movably engaged with the threads of the support rod and having longitudinal slits formed to open in one direction and at least two pressure parts formed in a longitudinal direction. The locking pressure of the pressure locking unit is imposed on the unit shafts at multiple longitudinally spaced points, thus dispersing or distributing the locking strength in the longitudinal direction and increasing both the locking strength and the resistance against both longitudinal compressive force and longitudinal tensile force, thereby preventing the locked unit shafts from suddenly slipping towards each other.

Abstract: An internal locking device (11) for a telescopic extendable pole (10) of the type comprising an inner and outer telescopic section (13,12) and a stop (22) on the outer section (13) which prevents detachment of the inner section (13) from the outer section (12). The locking device (11) has a mechanical locking means (18) which can be actuated to lock the two sections (12,13) together and a rotatable collar (24) is provided adjacent the locking means (28) to prevent contact between the stop (22) and the locking means (28).

Abstract: Embodiments relating to a telescoping pole system are provided. Such a telescoping pole system may be adjusted by user manipulation to vary a length of the telescoping pole system.

Abstract: A stabilization and support strut for use in rescue operations in buildings, trenches, vehicle accidents, and the like has secure deployment features including first and second inter-fitting collar assemblies, the first collar assembly including a first collar, circumferentially based spring-biased piston-retaining pins mounted in the collar for fitting into orifices in a piston body, and a locking pin for precluding rotation and axial movement of the first collar on the strut; and the second collar assembly including a second collar rotatingly secured on the barrel with a portion of the second collar underlying the first and having a circumferentially inclined ratchet surface for snugly engaging the piston-retaining pins upon rotation of the second collar, the second collar further including rotatable studs for engaging the barrel and precluding rotation of the second collar about the barrel when snug against the piston-retaining pins.

Abstract: Method and arrangement for providing a load carrier mountable on a carrying vehicle. The arrangement includes an elevating structure arranged between a base portion and a load supporting portion. The elevating structure is adapted to expand and contract between raised and lowered configurations. The elevating structure includes two substantially upright members, each of which is slidably moveable relative to the other for establishing the raised and lowered configurations. A fixing device is provided for releasably fixing the two sliding members one to the other. The fixing device includes a blocking member that is insertible in aligned receivers, one each of the aligned receivers being formed in each of the two sliding members for preventing expansion and contraction of the elevating structure. The fixing device further includes a take-up arrangement that is configured to press one of the two upright members against the other thereby forming a releasable friction fit therebetween.

Abstract: A telescoping pole assembly for an erectable, collapsible shelter, includes first and second hollow telescoping sections slidably connected together, the first telescoping section being slidably disposed within the second telescoping section, and a spring loaded detent pin mounted to the second telescoping section. A weighted internal stop member is slidably disposed within the first telescoping section for movement between a first position and a second position. The internal stop member blocks the spring loaded detent pin in the first position, and the internal stop member does not block the spring loaded detent pin in the second position.

Abstract: An adjustable-length tube (10) for sticks, having an outer tube (12) and an inner tube (11) that can be inserted telescope-like into the outer tube (12) for adjusting the length of the tube, and having a spreading device (15) that is supported at the insertion end of the inner tube (11), the spreading device being able to clamp the inner tube (11) axially in the outer tube (12) and having a spreading element (16) that can be radially pressed apart and that is furnished with an inner cone (27), an interior element (17) that is provided with a reverse-oriented outer cone (22) and that is accommodated in the spreading element (16) so as to be axially movable, and an adjusting screw (18) that is axially oriented and is supported in a rotationally fixed manner on the inner tube (11), the adjusting screw having an operational connection to an internally threaded bore (21) in the interior element (17).

Abstract: A front wheel of a golf cart includes a supporting component, a round rotating member, and a joining shaft coupling the rotating member to the supporting component; the supporting component includes a holding part, which has an outer stopping protrusion, a polygonal portion, and a round portion adjoining the polygonal portion; the shaft includes a shank partly held in the holding part; a spring biases the shaft to such a position that the shaft is prevented from rotating by the polygonal portion; a fixing component is secured around other end of the shank, and contains the stopping protrusion; the fixing component has a polygonal hollow portion to fit closely around the polygonal portion to prevent the shaft from rotating; the round rotating member can be turned together with the shaft to fold the front wheel after the polygonal hollow portion is relocated around the round portion.

Abstract: Extension pole apparatus includes an attachment component (20,100) having an elongate body (22,105) that is adapted to receive a tubular or rod like component so that the latter extends generally parallel to the longitudinal direction of the body. A pair of plates (24,25;110a,110b) are mounted to and project laterally from the body. The plates extend generally parallel to the longitudinal direction of the body for receiving between them an aligned element of a powered sanding apparatus, which aligned element is a hollow shaft or a rib of a motor unit of the apparatus. Means (29,155) is included by which the plates may be rigidly fastened to the aligned element. A tubular or rod like component is receivable into the elongate body, and means (23,165) is provided by which the tubular or rod like component may be fastened to the attachment component while it is received in the elongate body.

Abstract: In a preferred embodiment, an apparatus, including; telescoping inner and outer members; a release collar circumferentially encircling the outer member; at least one rotatably mounted pawl disposed in the outer member; the at least one rotatably mounted pawl being depressed into at least a first depression formed circumferentially in the inner member by the release collar; and the at least one rotatably mounted pawl being movable between unlocked and locked positions. A vibration damper for the hold open rod is also provided.

Abstract: A folding shaft for umbrellas includes a first section having a circular cross section and the first section is retractably received in a second section which includes an enclosed cross section which includes a plurality of straight sides and a plurality of first curved portions connected between the straight sides. A third section is movably mounted to the second section and including an enclosed cross section which includes a plurality of inward curved sides and a plurality of second curved portions connected between the inward curved sides. The inward curved sides of the third section are located corresponding to the straight sides of the second section. The second curved portions of the third section are located corresponding to the first curved portions. The gap between these sections can be controlled to be the minimum.

Abstract: A telescopic adjusting mechanism includes: an outer tube having a positioning unit; an inner tube having a hole and displaceable relative to the outer tube along a longitudinal axis; a locking unit displaceable along with the inner tube, and including a locking member movable along a transverse axis between a locking position, where the locking member extends through the hole to engage the positioning unit, and an unlocking position, where the locking member is disengaged from the positioning unit, and a biasing member biasing the locking member to the locking position, the locking unit being formed with an engaging member; a restraining member engaging releasably the engaging member when the locking member is at the unlocking position to prevent the locking unit from hindering retraction of the inner tube into the outer tube; and a drive unit operable to move the locking member from the locking position to the unlocking position.

Abstract: An extensible electrical connecting device comprises an extensible supporting bar device and an extensible electric cable. The extensible electrical connecting device further comprises a first electrical connecting base which is connected to one end of the extensible supporting bar device and connected to one end of the extensible electric cable and a second electrical connecting base which is connected to another end of the extensible supporting bar device and connected to one end of the extensible electric cable. Therefore the extensible electric cable is capable to extend its length along with the extending motion of the extensible supporting bar device so as to provide an electrical connection between the first electrical connecting base and the second electrical connecting base.