Patents by Inventor Chun-Chu Tseng

Chun-Chu Tseng has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5413051
    Abstract: A drawing table includes two parallel stands, two top supports pivoted to the stands at the top and supported on short horizontal rods on the stands by a second adjusting device being controlled to adjust the angular positions of the top supports on the stands, a drawing board mounting frame having a front side pivoted to two parallel top supports and a rear side connected to the stands by a first adjusting device being controlled to adjust the angular position of the drawing board mounting frame on the top supports, two lifting gears mounted on an upper cross rod between the stands and respectively connected to the drawing board mounting frame and a cross rod between the top supports, and two tie rods mounted on a bottom cross rod between the stands and respectively connected to either short horizontal rod.
    Type: Grant
    Filed: November 30, 1993
    Date of Patent: May 9, 1995
    Assignee: Chin JWU Enterprise Co., Ltd.
    Inventor: Chun-Chu Tseng
  • Patent number: 5408936
    Abstract: The rack assembly includes a pair of mounting struts which are disposed spacedly in a parallel relationship and which are respectively formed with an elongated groove that has a lower end provided with an engaging member and an upper end. A plate member has two opposed end edges and two opposed side edges. One of the end edges of the plate member is disposed between the struts. Each of the side edges of the plate member has a positioning projection extending into an adjacent one of the guiding grooves. A connecting rod has a first end pivoted to one of the struts at a position above the upper end of the guiding groove and a second end pivoted to an adjacent side edge of the plate member to permit engagement between the engaging members and the positioning projections of plate member when the positioning projections of the plate member are moved to the lower ends of the guiding grooves of the struts.
    Type: Grant
    Filed: December 28, 1993
    Date of Patent: April 25, 1995
    Inventor: Chun-Chu Tseng
  • Patent number: 5367962
    Abstract: A table includes a table top unit, an annular table frame secured to the table top unit, and a leg assembly including several elongated blocks and several legs. Each of the legs includes a foot portion, two leg bodies secured respectively to the foot portion, and two aligned horizontal pivot portions secured respectively to the leg bodies. Each of the blocks includes a first vertical side surface, a second vertical side surface, an elongated horizontal bottom surface, and two end walls. The first side surface is secured to the annular table frame. The second side surface has a horizontal slot and two vertical slots each of which is communicated with an intermediate portion of the horizontal slot. The bottom surface interconnects the first and second side surfaces and has two L-shaped slots each of which has a lengthwise section and a transverse section. The transverse section has a first end communicated with the lengthwise section and a second end communicated with one of the vertical slots.
    Type: Grant
    Filed: June 14, 1993
    Date of Patent: November 29, 1994
    Inventor: Chun-Chu Tseng
  • Patent number: 5310246
    Abstract: A foldable lawn chair includes a seat frame, a backrest frame connected pivotally to a rear end of the seat frame, and two arm support frames at two sides of the seat frame. Each of the arm support frames has an armrest portion provided with a positioning member that has a longitudinal slot, front and rear ends, upper and lower peripheries extending between the front and rear ends, a row of positioning notches along the upper periphery, and an access hole integrally formed with the longitudinal slot. A slide plate is sleeved slidably on the positioning member and has a longitudinal slot and a through-hole that is formed integrally with and that is communicated with the longitudinal slot thereof. When the slide plate slides together with a positioning stud of the backrest frame along the positioning member, the positioning notches in the positioning member are respectively covered by the slide plate and are exposed through the through-hole of the slide plate.
    Type: Grant
    Filed: September 17, 1993
    Date of Patent: May 10, 1994
    Inventor: Chun-Chu Tseng
  • Patent number: 5282664
    Abstract: A lawn chair includes a seat frame assembly which has a seat frame and a rear leg frame, a backrest frame connected pivotally to the rear end portion of the seat frame at the lower end portion thereof, two spaced arm supporting frames provided on two sides of the backrest frame, two elongated positioning members secured to the rear end portions of the arm supporting frames, and two positioning studs extending outwardly from the two sides of the backrest frame. Each of the arm supporting frames has an intermediate portion connected pivotally to the seat frame, a front leg portion extending downwardly and forwardly from the intermediate portion, and an armrest portion extending upwardly and rearwardly from the intermediate portion. Each positioning member has an access hole and a longitudinal slot communicating with the access hole and having a horizontal row of upwardly extending positioning portions.
    Type: Grant
    Filed: June 14, 1993
    Date of Patent: February 1, 1994
    Inventor: Chun-Chu Tseng
  • Patent number: 5244249
    Abstract: A lawn chair includes a main frame assembly, a pillow frame, a pillowcase, a rear leg frame, a seat frame assembly, two elongated adjustment members and two positioning rods. The main frame assembly includes a backrest frame, a front leg frame and a curved first supporting rod mounted pivotally on the backrest frame at two ends thereof. The pillow frame is attached to an upper end portion of the backrest frame and is covered by the pillowcase. The rear leg frame is connected pivotally to an upper end portion of the front leg frame. The seat frame assembly includes two parallel straight rods connected pivotally to an intermediate portion of the rear leg frame at rear end portions thereof, and a curved second supporting rod mounted pivotally on front end portions of the straight rods at two ends thereof.
    Type: Grant
    Filed: September 2, 1992
    Date of Patent: September 14, 1993
    Inventor: Chun-Chu Tseng
  • Patent number: 5065873
    Abstract: A shelf frame includes a first, a second, a third and a fourth leg device. Each of these leg devices includes an upper end, a lower end and a pair of elongated rods spaced apart from one another in parallel relationship and clamped by a plurality of clamping members. Each clamping member has a through-hole formed therein. A pair of connecting members, each has two ends respectively and correspondingly connecting the uppers end of the first and second leg devices to form a first inverted U-shaped frame, and the uppers ends of the third and fourth leg devices to form a second inverted U-shaped frame. The lower end of each leg device has a support on which the leg device stands. A transverse rod has two ends respectively connected to one clamping member on the first leg device and another clamping member on the second leg device. A rectangular plate has a pair of opposite sides each provided with at least one hook to engage the transverse rods.
    Type: Grant
    Filed: May 16, 1991
    Date of Patent: November 19, 1991
    Inventor: Chun-Chu Tseng
  • Patent number: D360082
    Type: Grant
    Filed: June 3, 1994
    Date of Patent: July 11, 1995
    Inventor: Chun-Chu Tseng
  • Patent number: D374780
    Type: Grant
    Filed: November 21, 1995
    Date of Patent: October 22, 1996
    Inventor: Chun-Chu Tseng