Abstract: A waterproof shelter includes a frame having two elongated first sides and two short second sides, a canopy mounted on the top of the frame and having two elongated first sides and two short second sides, two elongated side panels each mounted on one of the two first sides of the frame and each having a top side securely bonded to one of the two first sides of the canopy by means of a heat welding process, two end connecting panels each having a first side and a second side, the first side securely bonded to one of the two second sides of the canopy by means of a heat welding process, and at least one auxiliary sheltering panel mounted on one of the two second sides of the frame, and having a top side secured to the second side of one of the two end connecting panels.

Abstract: A height-adjustable armrest unit for a chair includes a support, a generally upright sleeve, a leverage body, and a biasing member. The support is fixed on a seat of the chair and includes an upright plate portion which has an upright guiding slot formed therethrough and a column of engaging notches communicated with the slot. The sleeve is mounted on the upright plate portion of the support. The leverage body has an intermediate portion mounted pivotally on a first inner wall of the upright sleeve, an actuated upper end portion, and a lower end portion with a lock pin axially projecting therefrom and extending slidably into the guiding slot in the plate portion. The biasing member biases the upright sleeve to push the lock pin to engage a selected one of the notches. The upper end portion of the leverage body can be actuated against biasing action of the biasing member to disengage the lock pin from the selected one of the notches so as to retract into the guiding slot in the plate portion.

Abstract: An adjustable chair-armrest assembly includes a positioning plate attached to a chair seat, and a coupling seat having two side walls with inverted V-shaped top edges, and a bottom wall rotatably mounted over the plate by a vertical pivot pin. The plate has several equidistant positioning holes which are all spaced apart from the pivot pin at a predetermined distance. A ball is provided on the bottom wall and is biased to engage a selected one of the positioning holes so as to position the coupling seat on the plate. A tilting seat is pivoted on the coupling seat in such a manner that the tilting seat can swing on the coupling seat. An armrest member has a wrist receiving element attached to a front end portion thereof and is mounted movably on the tilting seat in such a manner that the armrest member can be moved forward and rearward on the tilting seat.

Abstract: An adjustable chair-armrest assembly includes an chair-armrest assembly includes an elongated positioning plate attached to a chair seat, an elongated coupling seat mounted pivotally on the positioning plate and rotatable about a vertical axis, and an elongated tilting seat mounted pivotally on the coupling seat and rotatable about a horizontal axis. An armrest member is mounted movably on the tilting seat and can be moved along the length of the tilting seat. An inclination adjusting device includes a slot element which is secured to the rear end portion of the coupling seat and which has several horizontal slots extending in a direction transverse to the coupling seat, and an engagement having an upper end portion pivoted to the rear end portion of the coupling seat, and a lower end with a projection projecting therefrom into a selected one of the slots of the slot element. A spring biases the projection to engage the selected one of the slots.

Abstract: A chair includes a movable base, a first pneumatic cylinder, a support frame, a pivot frame, an elongated spring plate unit, and a second pneumatic cylinder. The first pneumatic cylinder is mounted uprightly on the movable base. The support frame has an upright sleeve which is sleeved rotatably on a top end of the first pneumatic cylinder, an arm plate which extends forwardly from a top end of the sleeve, and parallel front and rear shafts which are mounted transversely on the arm plate. The pivot frame has a front end that is mounted pivotally on the rear shaft and further has a seat and a backrest fixed thereon. The spring plate unit has a rear end portion which is mounted on the front end of the pivot frame and a front end portion which extends underneath and abuts with the front shaft.

Abstract: An umbrella includes a hollow shank that is open at an upper end. A hollow lamp holder unit is provided on the upper end of the shank and has a closed upper end to which a plurality of ribs are connected, an open lower end formed with a central hole to permit the shank to extend into the lamp holder unit, and a positioning rod which extends from the upper end and into the shank. The positioning rod has a longitudinal groove formed on a periphery thereof. A slidable ring is sleeved on the shank. A plurality of spreaders are connected pivotally to a periphery of the ring member at one end and are connected pivotally and respectively to the ribs at the other end. A lighting element is mounted securely on the lower end of the lamp holder unit adjacent to the central hole. An electric cable unit is disposed inside the shank and extends through the groove in the positioning rod and into the lamp holder unit, thereby interconnecting the lighting element electrically with a power source.

Abstract: A height-adjustable armrest unit for a chair includes a support, a vertical sleeve, and a leverage body. The support is mounted securely on the seat of the chair and includes a vertical plate portion with a column of positioning holes formed therethrough. The vertical sleeve is disposed on the vertical plate portion of the support and has a pair of pivot holes respectively formed in the inner surfaces of two opposite side walls thereof. The leverage body includes an actuated upper end portion, an engaging tongue projecting from the lower end portion of the leverage body to engage selectively one of the positioning holes, and a pair of pivot pins respectively secured to an intermediate portion of the leverage body between the actuated upper end portion and the engaging tongue so as to engage the pivot holes respectively.

Abstract: An assembly of a chair frame and a reinforcing rod unit is provided to prevent deformation of the chair frame. The chair frame is U-shaped and has two parallel longitudinal frame portions. The reinforcing rod unit has two ends coupled with the longitudinal frame portions respectively so as to prevent the longitudinal frame portions from deformation. The reinforcing rod unit includes a horizontal tube and two pivotal connector mechanisms respectively coupled with two ends of the tube. Each of the mechanisms includes an elongated tube connector coupled with the tube, a flexible hollow frame connector coupled with the corresponding longitudinal frame portion, and a pivot pin to mount the tube connector pivotally on the frame connector.

Abstract: An apparatus includes an elongated flexible tube with an oblong cross section. The tube has two opposed long sides and an elongated partition wall extends parallel with the opposed long sides. The elongated partition wall defines a slot within the same, into which an iron pipe of elliptical shape in cross section is inserted.