US20060151020A1 - Super-shortened multiple-fold umbrella - Google Patents
Super-shortened multiple-fold umbrella Download PDFInfo
- Publication number
- US20060151020A1 US20060151020A1 US11/030,054 US3005405A US2006151020A1 US 20060151020 A1 US20060151020 A1 US 20060151020A1 US 3005405 A US3005405 A US 3005405A US 2006151020 A1 US2006151020 A1 US 2006151020A1
- Authority
- US
- United States
- Prior art keywords
- tube
- rib
- tubes
- runner
- concave portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45B—WALKING STICKS; UMBRELLAS; LADIES' OR LIKE FANS
- A45B19/00—Special folding or telescoping of umbrellas
- A45B19/04—Special folding or telescoping of umbrellas with telescopic sticks
Definitions
- the present inventor has found the drawbacks of the prior art and invented the present multiple-fold umbrella which may even make a hepta-fold umbrella.
- the object of the present invention is to provide a multiple-fold umbrella including a telescopic central shaft having seven tubes telescopically coupled with one another, with an outermost tube having no (or zero) concave portion formed on the outermost tube, and with an innermost tube having six concave portions circumferentially formed on the innermost tube, each concave portion recessed in the tube centripetally about a longitudinal axis of the shaft and defining a central angle of sixty degrees, and the tubes gradationally increasing the number of the concave portions from the outermost tube towards the innermost tube to define an air chamber between a concave portion of an inner tube and a circular periphery of an outer tube neighboring to the inner tube for a smooth slidable coupling of every two neighboring tubes.
- Another object of the present invention is to provide a runner sleeve disposed, jacketed or formed on the central shaft, having a protrusion resiliently formed on the sleeve for stably engaging the runner when opening the umbrella.
- Still another object of the present invention is to provide a multiple-fold (including penta-fold) rib assembly pivotally secured to the central shaft including a tail rib having a cross section of the tail tube formed as U shape for making a light-weight rib assembly.
- FIG. 1 shows an opened umbrella of the present invention.
- FIG. 2 is a cross sectional drawing of the tubes of the central shaft when retracted.
- FIG. 3 is a cross sectional drawing of the outermost (first) tube of the central shaft.
- FIG. 4 is a cross sectional drawing of the second tube inside the outermost tube.
- FIG. 5 is a cross sectional drawing of the third tube inside the second tube.
- FIG. 6 is a cross sectional drawing of the fourth tube.
- FIG. 7 is a cross sectional drawing of the fifth tube inside the fourth tube.
- FIG. 8 is a cross sectional drawing of the sixth tube inside the fifth tube.
- FIG. 9 is a cross sectional drawing of the seventh (or the innermost) tube inside the sixth tube.
- FIG. 10 is a further enlarged illustration of FIG. 1 .
- FIG. 11 is a sectional drawing of the runner engaged with the protrusion formed on the runner sleeve.
- FIG. 12 is a partial sectional drawing showing the locking of an inner tube with an outer tube when opening the umbrella.
- FIG. 13 is a cross sectional drawing as viewed from Line 13 - 13 of FIG. 10 .
- the present invention comprises: a central shaft 1 having seven tubes 1 a , 1 b , 1 c , 1 d , 1 e , 1 f and 1 g telescopically coupled with one another; a rib assembly 2 pivotally secured to an upper notch 20 formed on a top of the central shaft 1 and a runner (or safety runner) 3 slidably held on a runner sleeve 11 disposed, jacketed or formed on the central shaft 1 .
- the tubes gradually or gradationally increase the number of concave portions V formed on each tube from the outermost (or first) tube 1 a to the innermost (or seventh) tube 1 g.
- Each concave portion V is recessed centripetally from a circular periphery of the tube towards a longitudinal axis X defined at a longitudinal center of the central shaft 1 , defining a central angle of 60 degrees ( FIG. 2 ) of a 360-degree circle, as being less than 90 degrees, for each concave portion V.
- the concave portion(s) V is or are gradually or gradationally increased from the outermost tube 1 a towards the innermost tube 1 g , it is essentially an increment of one concave portion V gradually increased from an outer tube to an inner tube inside the outer tube.
- the number of concave portion(s) V existing in the related tube(s) are shown as follows: Tube Number Number of concave portions (V) First (outermost) tube (1a) 0 V (zero concave portion) Second tube (1b) 1 V (one concave portion) Third tube (1c) 2 V (two concave portions) Fourth tube (1d) 3 V Fifth tube (1e) 4 V Sixth tube (1f) 5 V Seventh (innermost) tube (1g) 6 V
- the outer tube (e.g., the first tube) 1 a having zero concave portion and defining a complete circular periphery about the axis X
- the inner tube 1 b commonly define an air chamber A between the circular periphery of the first tube 1 a and the concave portion V of the second (inner) tube 1 b .
- Such an air chamber A will provide an aperture for air flow to prevent from serious frictional contacting between the two neighboring tubes ( 1 a , 1 b ) as shown in FIG. 4 .
- the second tube 1 b and the third tube 1 c define another air chamber A therebetween ( FIG. 5 ) for enhancing a smooth slidable coupling or engagement of the two neighboring tubes ( 1 b and 1 c ).
- the concave portions V of the outer tube are slidably engaged or coupled with the corresponding concave portions V of the inner tube.
- the second tube 1 b includes a concave portion V having a curvature center at an “orienting angle” of 330 degrees ( FIG. 4 ), which is same as the orienting angle (330°) of another curvature center of the corresponding concave portion V of the third tube 1 c (an inner tube next to the second tube 1 b ).
- the concave portions of the two neighboring tubes provide a reliable slidable engagement between the two neighboring tubes (the inner and outer tubes) for preventing from axial rotation or twisting during extending or retraction of the tubes when opening or closing the umbrella.
- the air chamber A in every two neighboring tubes provides an air flowing channel to prevent from a serious frictional dogging or “braking” whenever slidably extending or retracting the tubes of the shaft 1 to thereby ensure a very smooth operation for opening or closing the multiple-fold umbrella.
- each central angle of each concave portion V is 60 degrees, less than a quadrant (90°) of the prior art (U.S. Pat. No. 6,035,873), there are gradually increasing the number of concave portion(s) from one concave portion to six concave portions V from the second tube 1 b towards the seventh tube 1 g to have six tubes in addition to a circular outermost (first) tube 1 a to thereby obtain a multiple-fold central shaft 1 consisting of seven tubes 1 a - 1 g , namely a “super-shortened” hepta-fold umbrella, which is not anticipated by the prior art.
- the super-shortened umbrella of the present invention can be folded to greatly reduce its volume to be beneficial for convenient storage and handling.
- the runner sleeve 11 is disposed about the central shaft 1 consisting of the seven telescopic tubes 1 a ⁇ 1 g , having an upper end of the runner sleeve 11 secured to a top or an upper notch 20 on a top portion of the shaft 1 ; having an aperture S between the sleeve 11 and the tubes 1 g , 1 f for receiving the shaft tubes into the aperture S when retracting the tubes when closing the umbrella.
- the runner sleeve 11 includes a protrusion 111 resiliently formed on the sleeve to be engaged with a socket (or engaging portion) 30 formed in the runner 3 for locking the runner 3 when opening the umbrella ( FIGS. 1, 10 & 11 ).
- the runner 3 includes: a cylinder portion 31 slidably held on the runner sleeve 11 , a ferrule 32 formed on an upper portion of the cylinder portion 31 for pivotally securing the rib assembly 2 , and an actuator 33 formed on the runner 3 adapted for disengaging the protrusion 111 of the sleeve 11 when closing the umbrella, whereby upon operation of the actuator 33 to depress the protrusion 111 inwardly to disengage the protrusion 111 from the socket 30 in the runner 3 , the runner 3 will then be lowered for closing the umbrella.
- the actuator 33 may be a push button slidably formed in a groove 33 g formed in the runner 3 , whereby upon inward depression of the push-button type actuator 33 , the protrusion 111 will be depressed inwardly to disengage the runner 3 for closing the umbrella.
- the protrusion 111 provided for engaging or locking the runner 3 when opening the umbrella is formed or integrally formed on the sleeve 11 , not on the tubes of the shaft 1 ; and there is almost no aperture between the runner 3 and the sleeve 11 , the engagement between the protrusion 111 and the runner 3 is very stable accordingly, regardless of an aperture S existing between the sleeve 11 and the upper tubes 1 f , 1 g . So, this invention provides a reliable locking of runner on the sleeve 11 of the shaft 1 to be more stable than the prior art.
- the rib assembly 2 of the present invention may be multiple folds, such as penta-fold, but not limited in this invention.
- the multiple-fold rib assembly 2 includes: a top rib 21 pivotally secured to the upper notch 20 , a stretcher rib 22 pivotally secured to the top rib 21 and the runner 3 , an intermediate rib 23 respectively pivotally secured to the top rib 21 and secured to the stretcher rib 22 through an inner connecting rib 24 , and a tail rib 25 pivotally secured to the intermediate rib 23 subsequently through an outer connecting rib 26 and an auxiliary intermediate rib 27 .
- the auxiliary intermediate rib 27 is respectively pivotally secured to the intermediate rib 23 and secured to the top rib 21 through an inner resilient rib 23 a juxtapositioned to the intermediate rib 23 .
- the outer connecting rib 26 has its inner portion respectively secured to the auxiliary intermediate rib 27 and an intermediate resilient rib 27 a , which is juxtapositioned to the auxiliary intermediate rib 27 and also pivotally secured to the intermediate rib 23 .
- the tail rib 25 is also pivotally secured to the auxiliary intermediate rib 27 through an outer resilient rib 26 a , which is juxtapositioned to the outer connecting rib 26 .
- the tail rib 25 has its cross section formed as U shape as shown in FIG. 13 .
- the U-shaped tail rib 25 has the following advantages:
- the present invention may be modified without departing from the spirit and scope of the present invention.
- Even the shaft 1 is a hepta-fold shaft 1 and the rib assembly 2 is a penta-fold rib assembly.
- the number of folds of the shaft 1 or rib assembly 2 are not limited in this invention.
Abstract
A multiple-fold umbrella includes a telescopic central shaft having seven tubes telescopically coupled with one another, with an outermost tube having no (or zero) concave portion formed on the outermost tube, and with an innermost tube having six concave portions circumferentially formed on the innermost tube, each concave portion recessed in the tube centripetally about a longitudinal axis of the shaft and defining a central angle of sixty degrees, and the tubes gradationally increasing the number of the concave portions from the outermost tube towards the innermost tube to define an air chamber between a concave portion of an inner tube and a circular periphery of an outer tube neighboring to the inner tube for a smooth slidable coupling of every two neighboring tubes.
Description
- U.S. Pat. No. 6,035,873 (the prior art) invented by the same inventors of this application disclosed a multiple-fold umbrella having gradationally convex telescopic shaft which may be provided for penta-fold umbrella as shown in
FIG. 16 ˜23 of the accompanying drawings of the prior art. - However, this prior art still has the following drawbacks:
- 1. Reviewing the smallest (in diameter) uppermost tube (10), it has four concave quadrants (V), which are gradually increased (from 0V to 4V) from the outermost tube (14). If the umbrella is influentially made for hexa-fold (or six-fold), it is impossible to do so because a circle can be divided into four concave quadrants (4V) only. So, the prior art can be provided for making a penta-fold umbrella only.
- 2. The multiple-fold shaft (1) includes plural telescopic tubes tapered upwardly so that a large aperture will exist between the runner (23) and the uppermost tube (11 or 10), thereby causing unstable engagement of the spring catch (15) with the runner (23) in view of
FIG. 1 of the prior art, and possibly causing unexpected closing of the umbrella from its opening state. - 3. The tail rib (28) is formed as a solid circular rod (
FIG. 2 of the prior art). Such a circular-rod rib (28) is heavy, being not suitable for making a light-weight multiple-fold umbrella in modern umbrella industry. - The present inventor has found the drawbacks of the prior art and invented the present multiple-fold umbrella which may even make a hepta-fold umbrella.
- The object of the present invention is to provide a multiple-fold umbrella including a telescopic central shaft having seven tubes telescopically coupled with one another, with an outermost tube having no (or zero) concave portion formed on the outermost tube, and with an innermost tube having six concave portions circumferentially formed on the innermost tube, each concave portion recessed in the tube centripetally about a longitudinal axis of the shaft and defining a central angle of sixty degrees, and the tubes gradationally increasing the number of the concave portions from the outermost tube towards the innermost tube to define an air chamber between a concave portion of an inner tube and a circular periphery of an outer tube neighboring to the inner tube for a smooth slidable coupling of every two neighboring tubes.
- Another object of the present invention is to provide a runner sleeve disposed, jacketed or formed on the central shaft, having a protrusion resiliently formed on the sleeve for stably engaging the runner when opening the umbrella.
- Still another object of the present invention is to provide a multiple-fold (including penta-fold) rib assembly pivotally secured to the central shaft including a tail rib having a cross section of the tail tube formed as U shape for making a light-weight rib assembly.
-
FIG. 1 shows an opened umbrella of the present invention. -
FIG. 2 is a cross sectional drawing of the tubes of the central shaft when retracted. -
FIG. 3 is a cross sectional drawing of the outermost (first) tube of the central shaft. -
FIG. 4 is a cross sectional drawing of the second tube inside the outermost tube. -
FIG. 5 is a cross sectional drawing of the third tube inside the second tube. -
FIG. 6 is a cross sectional drawing of the fourth tube. -
FIG. 7 is a cross sectional drawing of the fifth tube inside the fourth tube. -
FIG. 8 is a cross sectional drawing of the sixth tube inside the fifth tube. -
FIG. 9 is a cross sectional drawing of the seventh (or the innermost) tube inside the sixth tube. -
FIG. 10 is a further enlarged illustration ofFIG. 1 . -
FIG. 11 is a sectional drawing of the runner engaged with the protrusion formed on the runner sleeve. -
FIG. 12 is a partial sectional drawing showing the locking of an inner tube with an outer tube when opening the umbrella. -
FIG. 13 is a cross sectional drawing as viewed from Line 13-13 ofFIG. 10 . - As shown in the drawing figures, the present invention comprises: a
central shaft 1 having seventubes rib assembly 2 pivotally secured to anupper notch 20 formed on a top of thecentral shaft 1 and a runner (or safety runner) 3 slidably held on arunner sleeve 11 disposed, jacketed or formed on thecentral shaft 1. - The tubes gradually or gradationally increase the number of concave portions V formed on each tube from the outermost (or first)
tube 1 a to the innermost (or seventh) tube 1 g. - Each concave portion V is recessed centripetally from a circular periphery of the tube towards a longitudinal axis X defined at a longitudinal center of the
central shaft 1, defining a central angle of 60 degrees (FIG. 2 ) of a 360-degree circle, as being less than 90 degrees, for each concave portion V. - Since the concave portion(s) V is or are gradually or gradationally increased from the
outermost tube 1 a towards the innermost tube 1 g, it is essentially an increment of one concave portion V gradually increased from an outer tube to an inner tube inside the outer tube. - The number of concave portion(s) V existing in the related tube(s) are shown as follows:
Tube Number Number of concave portions (V) First (outermost) tube (1a) 0 V (zero concave portion) Second tube (1b) 1 V (one concave portion) Third tube (1c) 2 V (two concave portions) Fourth tube (1d) 3 V Fifth tube (1e) 4 V Sixth tube (1f) 5 V Seventh (innermost) tube (1g) 6 V - Accordingly, there is an increment of one concave portion (one V) between every two neighboring tubes, i.e., between the inner tube. and the outer tube.
- The outer tube (e.g., the first tube) 1 a, having zero concave portion and defining a complete circular periphery about the axis X, and the
inner tube 1 b commonly define an air chamber A between the circular periphery of thefirst tube 1 a and the concave portion V of the second (inner)tube 1 b. Such an air chamber A will provide an aperture for air flow to prevent from serious frictional contacting between the two neighboring tubes (1 a, 1 b) as shown inFIG. 4 . - Similarly, the
second tube 1 b and thethird tube 1 c define another air chamber A therebetween (FIG. 5 ) for enhancing a smooth slidable coupling or engagement of the two neighboring tubes (1 b and 1 c). - By the way, the concave portions V of the outer tube are slidably engaged or coupled with the corresponding concave portions V of the inner tube. Taking
FIGS. 4 and 5 as examples, thesecond tube 1 b includes a concave portion V having a curvature center at an “orienting angle” of 330 degrees (FIG. 4 ), which is same as the orienting angle (330°) of another curvature center of the corresponding concave portion V of thethird tube 1 c (an inner tube next to thesecond tube 1 b). Another concave portion V, having its curvature center orienting at 150°, of thethird tube 1 c as shown inFIG. 5 has no “corresponding” concave portion in the outer (second)tube 1 b, but defining an air chamber A between the circular periphery of the outer orsecond tube 1 b and the concave portion of the inner orthird tube 1 c (FIG. 5 ). Therefore, the concave portions of the two neighboring tubes provide a reliable slidable engagement between the two neighboring tubes (the inner and outer tubes) for preventing from axial rotation or twisting during extending or retraction of the tubes when opening or closing the umbrella. So, the air chamber A in every two neighboring tubes provides an air flowing channel to prevent from a serious frictional dogging or “braking” whenever slidably extending or retracting the tubes of theshaft 1 to thereby ensure a very smooth operation for opening or closing the multiple-fold umbrella. - Since each central angle of each concave portion V is 60 degrees, less than a quadrant (90°) of the prior art (U.S. Pat. No. 6,035,873), there are gradually increasing the number of concave portion(s) from one concave portion to six concave portions V from the
second tube 1 b towards the seventh tube 1 g to have six tubes in addition to a circular outermost (first)tube 1 a to thereby obtain a multiple-foldcentral shaft 1 consisting of seventubes 1 a-1 g, namely a “super-shortened” hepta-fold umbrella, which is not anticipated by the prior art. - The super-shortened umbrella of the present invention can be folded to greatly reduce its volume to be beneficial for convenient storage and handling.
- The
runner sleeve 11 is disposed about thecentral shaft 1 consisting of the seventelescopic tubes 1 a˜1 g, having an upper end of therunner sleeve 11 secured to a top or anupper notch 20 on a top portion of theshaft 1; having an aperture S between thesleeve 11 and thetubes 1 g, 1 f for receiving the shaft tubes into the aperture S when retracting the tubes when closing the umbrella. - The
runner sleeve 11 includes aprotrusion 111 resiliently formed on the sleeve to be engaged with a socket (or engaging portion) 30 formed in therunner 3 for locking therunner 3 when opening the umbrella (FIGS. 1, 10 & 11). - The
runner 3 includes: acylinder portion 31 slidably held on therunner sleeve 11, aferrule 32 formed on an upper portion of thecylinder portion 31 for pivotally securing therib assembly 2, and anactuator 33 formed on therunner 3 adapted for disengaging theprotrusion 111 of thesleeve 11 when closing the umbrella, whereby upon operation of theactuator 33 to depress theprotrusion 111 inwardly to disengage theprotrusion 111 from thesocket 30 in therunner 3, therunner 3 will then be lowered for closing the umbrella. - The
actuator 33 may be a push button slidably formed in agroove 33 g formed in therunner 3, whereby upon inward depression of the push-button type actuator 33, theprotrusion 111 will be depressed inwardly to disengage therunner 3 for closing the umbrella. - Other modifications may be made for modifying the
actuator 33 in order to disengage theprotrusion 111 on thesleeve 11 when closing the umbrella, not limited in this invention. - Since the
protrusion 111 provided for engaging or locking therunner 3 when opening the umbrella is formed or integrally formed on thesleeve 11, not on the tubes of theshaft 1; and there is almost no aperture between therunner 3 and thesleeve 11, the engagement between theprotrusion 111 and therunner 3 is very stable accordingly, regardless of an aperture S existing between thesleeve 11 and theupper tubes 1 f, 1 g. So, this invention provides a reliable locking of runner on thesleeve 11 of theshaft 1 to be more stable than the prior art. - The
rib assembly 2 of the present invention may be multiple folds, such as penta-fold, but not limited in this invention. - As shown in
FIG. 1 , themultiple-fold rib assembly 2 includes: atop rib 21 pivotally secured to theupper notch 20, astretcher rib 22 pivotally secured to thetop rib 21 and therunner 3, anintermediate rib 23 respectively pivotally secured to thetop rib 21 and secured to thestretcher rib 22 through an inner connectingrib 24, and atail rib 25 pivotally secured to theintermediate rib 23 subsequently through an outer connectingrib 26 and an auxiliaryintermediate rib 27. - The auxiliary
intermediate rib 27 is respectively pivotally secured to theintermediate rib 23 and secured to thetop rib 21 through an innerresilient rib 23 a juxtapositioned to theintermediate rib 23. The outer connectingrib 26 has its inner portion respectively secured to the auxiliaryintermediate rib 27 and an intermediateresilient rib 27 a, which is juxtapositioned to the auxiliaryintermediate rib 27 and also pivotally secured to theintermediate rib 23. Thetail rib 25 is also pivotally secured to the auxiliaryintermediate rib 27 through an outerresilient rib 26 a, which is juxtapositioned to the outer connectingrib 26. - Naturally, other modifications or arrangements of the multiple-fold rib assembly can be made in accordance with the present invention.
- The
tail rib 25 has its cross section formed as U shape as shown inFIG. 13 . The U-shapedtail rib 25 has the following advantages: - 1. The
U-shaped tail rib 25 is light in weight, without deteriorating its hardness or strength. - 2. The
U-shaped tail rib 25 may be easily formed, such as by integral forming molding processes, to integrally form an inner joint 251 and anouter ball tip 252 on opposite ends of therib 25 for simplifying production and decreasing production cost. As shown inFIG. 12 , an inner tube I of theshaft 1 may be locked and limited with an outer tube O by respectively resiliently engaging a ball B (tensioned by a spring) with both ball holes H1, H2 respectively formed in the outer and inner tubes O, I to prevent from separation of the two neighboring tubes when extending the tubes for opening the umbrella (FIG. 1 ). - The present invention may be modified without departing from the spirit and scope of the present invention. Even the
shaft 1 is ahepta-fold shaft 1 and therib assembly 2 is a penta-fold rib assembly. However, the number of folds of theshaft 1 orrib assembly 2 are not limited in this invention.
Claims (8)
1. A multiple-fold umbrella comprising:
a central shaft including a plurality of tubes telescopically coupled with one another about a longitudinal axis defined at a longitudinal center of the shaft;
a runner sleeve disposed, jacketed or formed on said central shaft and having a protrusion formed on said runner sleeve; and
a multiple-fold rib assembly pivotally secured to an upper notch formed on a top of said shaft and pivotally secured to a runner slidably held on said runner sleeve; said runner operatively engaged with said protrusion of said sleeve to be locked on said sleeve when opening the umbrella; said plurality of tubes gradually or gradationally increasing the number of concave portions formed on the tubes from an outermost tube towards an innermost tube of the shaft; each said concave portion recessed centripetally from a circular periphery of the tube towards said longitudinal axis of said shaft and each said concave portion defining a central angle, which is less than ninety degrees, of a 360-degree circle of each said tube; every two neighboring tubes having an increment of one concave portion between an inner tube and an outer tube neighboring with each other and defining an air chamber between a concave portion of the inner tube with a circular periphery of the outer tube; whereby upon sliding engagement of the concave portions of the outer tube with the concave portions of the inner tube, said outer and inner tubes are reliably engaged or coupled without being twisted or rotated; and said tubes are smoothly coupled without being frictionally braked as effected by each said air chamber defined between said outer and inner tubes.
2. A multiple-fold umbrella according to claim 1 , wherein each said concave portion defines a central angle of sixty degrees.
3. A multiple-fold umbrella according to claim 1 , wherein said central shaft includes: a first or outermost tube formed as a circle shape having zero concave portion formed thereon, a second tube inside said first tube having a concave portion recessed in said second tube, a third tube inside said second tube having two concave portions recessed in said third tube, a fourth tube inside said third tube having three concave portions recessed in said fourth tube, a fifth tube having four concave portions recessed therein, a sixth tube having five concave portions recessed therein, and a seventh or innermost tube having six concave portions recessed in said seventh ture, whereby upon telescopic coupling of all said tubes, a hepta-fold central shaft is formed.
4. A multiple-fold umbrella according to claim 1 , wherein said runner includes a socket formed in said runner to be engaged with said protrusion on said sleeve when opening the umbrella.
5. A multiple-fold umbrella according to claim 4 , wherein said runner includes an actuator formed in said runner, said actuator operatively depressing said protrusion inwardly to disengage said runner from said protrusion for closing the umbrella.
6. A multiple-fold umbrella according to claim 1 , wherein said rib assembly includes at least a top rib pivotally secured to an upper notch formed on a top of said shaft, a stretcher rib pivotally secured to said to rib and said runner, an intermediate rib respectively pivotally secured to said top rib and said stretcher rib, and a tail rib pivotally secured to said intermediate rib; the improvement which comprises said tail rib having a cross section of U shape.
7. A multiple-fold umbrella according to claim 6 , wherein said rib assembly is a penta-fold rib assembly, having said tail rib pivotally secured to said intermediate rib respectively through an auxiliary intermediate rib connected to said intermediate rib and through an outer connecting rib connected to said auxiliary intermediate rib.
8. A central shaft adapted for multiple-fold umbrella comprising a plurality of tubes telescopically coupled with one another about a longitudinal axis defined at a longitudinal center of the shaft; said plurality of tubes gradually or gradationally increasing the number of concave portions formed on the tubes from an outermost tube towards an innermost tube of the shaft; each said concave portion recessed centripetally from a circular periphery of the tube towards said longitudinal axis of said shaft and each said concave portion defining a central angle, which is less than ninety degrees, of a 360-degree circle of each said tube; every two neighboring tubes having an increment of one concave portion between an inner tube and an outer tube neighboring with each other and defining an air chamber between a concave portion of the inner tube with a circular periphery of the outer tube; whereby upon sliding engagement of the concave portions of the outer tube with the concave portions of the inner tube, said outer and inner tubes are reliably engaged or coupled without being twisted or rotated; and said tubes are smoothly coupled without being frictionally braked as effected by each said air chamber defined between said outer and inner tubes.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/030,054 US20060151020A1 (en) | 2005-01-07 | 2005-01-07 | Super-shortened multiple-fold umbrella |
CNB2006100003880A CN100387165C (en) | 2005-01-07 | 2006-01-06 | Super-shortened multiple-fold umbrella |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/030,054 US20060151020A1 (en) | 2005-01-07 | 2005-01-07 | Super-shortened multiple-fold umbrella |
Publications (1)
Publication Number | Publication Date |
---|---|
US20060151020A1 true US20060151020A1 (en) | 2006-07-13 |
Family
ID=36652028
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/030,054 Abandoned US20060151020A1 (en) | 2005-01-07 | 2005-01-07 | Super-shortened multiple-fold umbrella |
Country Status (2)
Country | Link |
---|---|
US (1) | US20060151020A1 (en) |
CN (1) | CN100387165C (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2445045A (en) * | 2006-12-21 | 2008-06-25 | Dragon Chang | Telescopic umbrella shaft |
US20110155194A1 (en) * | 2009-12-25 | 2011-06-30 | Fu-Tien Liu | Stopper for runner of umbrella |
US20140102495A1 (en) * | 2011-05-25 | 2014-04-17 | Federico Venturi | Foldable articulated arm |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5720311A (en) * | 1996-10-07 | 1998-02-24 | Fu Tai Umbrella Works, Ltd. | Telescopic umbrella shaft means with concave hexagonal sides |
US6035873A (en) * | 1998-07-15 | 2000-03-14 | Fu Tai Umbrella Works, Ltd. | Multiple-fold umbrella having gradationally convex telescopic shaft |
US6058952A (en) * | 1998-12-02 | 2000-05-09 | Fu Tai Umbrella Works, Ltd. | Simplified flat top umbrella |
US6382222B1 (en) * | 2000-11-09 | 2002-05-07 | Ko Chin-Sung | Safety locking mechanism used on umbrella rods |
US6418949B1 (en) * | 2000-06-28 | 2002-07-16 | Fu Tai Umbrella Works Ltd. | Multiple-fold umbrella shaft having telescopic tubes outwardly decreased in concave quadrants |
US20020112750A1 (en) * | 2001-02-22 | 2002-08-22 | Shih-Shin Kuo | Five-folded umbrella frame |
US20020179130A1 (en) * | 2001-05-30 | 2002-12-05 | Ko Chin Sung | Positioning structure for opening of an umbrella |
USD503035S1 (en) * | 2004-03-04 | 2005-03-22 | Chin Sung Ko | Umbrella shaft having seven tubes |
US20050217711A1 (en) * | 2004-03-31 | 2005-10-06 | Fu Tai Umbrella Works,Ltd. | Super-shortened multiple-fold umbrella shaft |
USD512215S1 (en) * | 2004-11-12 | 2005-12-06 | Ko Chin-Sung | Umbrella shaft having nine tubes |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1212087C (en) * | 1998-08-28 | 2005-07-27 | 福太洋伞工厂股份有限公司 | Multi-folding umbrella with telescopic central rod |
CN2533699Y (en) * | 2002-02-27 | 2003-02-05 | 陈进才 | Fastener for telescoping umbrella |
CN2636680Y (en) * | 2003-07-26 | 2004-09-01 | 刘春玉 | Multifolding umbrella |
-
2005
- 2005-01-07 US US11/030,054 patent/US20060151020A1/en not_active Abandoned
-
2006
- 2006-01-06 CN CNB2006100003880A patent/CN100387165C/en not_active Expired - Fee Related
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5720311A (en) * | 1996-10-07 | 1998-02-24 | Fu Tai Umbrella Works, Ltd. | Telescopic umbrella shaft means with concave hexagonal sides |
US6035873A (en) * | 1998-07-15 | 2000-03-14 | Fu Tai Umbrella Works, Ltd. | Multiple-fold umbrella having gradationally convex telescopic shaft |
US6058952A (en) * | 1998-12-02 | 2000-05-09 | Fu Tai Umbrella Works, Ltd. | Simplified flat top umbrella |
US6418949B1 (en) * | 2000-06-28 | 2002-07-16 | Fu Tai Umbrella Works Ltd. | Multiple-fold umbrella shaft having telescopic tubes outwardly decreased in concave quadrants |
US6382222B1 (en) * | 2000-11-09 | 2002-05-07 | Ko Chin-Sung | Safety locking mechanism used on umbrella rods |
US20020112750A1 (en) * | 2001-02-22 | 2002-08-22 | Shih-Shin Kuo | Five-folded umbrella frame |
US20020179130A1 (en) * | 2001-05-30 | 2002-12-05 | Ko Chin Sung | Positioning structure for opening of an umbrella |
USD503035S1 (en) * | 2004-03-04 | 2005-03-22 | Chin Sung Ko | Umbrella shaft having seven tubes |
US20050217711A1 (en) * | 2004-03-31 | 2005-10-06 | Fu Tai Umbrella Works,Ltd. | Super-shortened multiple-fold umbrella shaft |
USD512215S1 (en) * | 2004-11-12 | 2005-12-06 | Ko Chin-Sung | Umbrella shaft having nine tubes |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2445045A (en) * | 2006-12-21 | 2008-06-25 | Dragon Chang | Telescopic umbrella shaft |
GB2445045B (en) * | 2006-12-21 | 2010-01-27 | Dragon Chang | Telescopic umbrella shaft |
US20110155194A1 (en) * | 2009-12-25 | 2011-06-30 | Fu-Tien Liu | Stopper for runner of umbrella |
US8356612B2 (en) * | 2009-12-25 | 2013-01-22 | Fu-Tien Liu | Stopper for runner of umbrella |
US20140102495A1 (en) * | 2011-05-25 | 2014-04-17 | Federico Venturi | Foldable articulated arm |
US9149098B2 (en) * | 2011-05-25 | 2015-10-06 | Federico Venturi | Foldable articulated arm |
Also Published As
Publication number | Publication date |
---|---|
CN1799447A (en) | 2006-07-12 |
CN100387165C (en) | 2008-05-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6371686B1 (en) | Central shaft for collapsible umbrella | |
US6418949B1 (en) | Multiple-fold umbrella shaft having telescopic tubes outwardly decreased in concave quadrants | |
US6035873A (en) | Multiple-fold umbrella having gradationally convex telescopic shaft | |
US7089950B2 (en) | Umbrella operatively closed by directly pulling runner downwardly along a guiding sleeve | |
US9668554B2 (en) | Umbrella having an anti-inversion mechanism | |
US20060151020A1 (en) | Super-shortened multiple-fold umbrella | |
US6170498B1 (en) | Multiple-fold automatic umbrella | |
CN101204262B (en) | Middle bar structure able to reduce the gap | |
US20140194212A1 (en) | Expandable Baton With Locking Mechanism | |
US7255119B2 (en) | Slim safety runner and multiple-fold umbrella thereof | |
US5370144A (en) | Multiple-fold mini umbrella with centralized retraction | |
US10448715B2 (en) | Modular umbrella | |
US11084161B2 (en) | Anti-rotational telescopic pole | |
US6296001B1 (en) | Rib assembly for multiple-fold umbrella having plastic intermediate rib interconnected among light ribs | |
US20180213899A1 (en) | Umbrella | |
US20050217711A1 (en) | Super-shortened multiple-fold umbrella shaft | |
US20210310764A1 (en) | Extendable Baton With Locking Mechanism | |
KR200430884Y1 (en) | The shaft lever for multi-forlding umbrella | |
US20070095373A1 (en) | Pocketable folding umbrella as maximally flattened | |
US7401616B2 (en) | Umbrella with a foldable stem | |
CN205593426U (en) | Card concreties to construct and contain this card and concreties flexible implement of police that constructs | |
KR200430885Y1 (en) | The shaft lever for multi-forlding umbrella | |
JP3037335U (en) | Stretchable umbrella center rod with a polygonal cross-section with concave sides | |
US20040123889A1 (en) | Connection of stretchers or ribs and joints of umbrellas | |
JP3244511U (en) | umbrella |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: FU TAI UMBRELLA WORKS, LTD., TAIWAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LIN, CHUNG-KUANG;CHANG, JUNG-JEN;REEL/FRAME:016155/0108 Effective date: 20050104 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |