Release device of double-shade umbrella

This invention relates a release device of double-shade umbrella specially for opening simultaneously the two sets of ribs of a paramours's umbrella by pressing a T plate in the umbrella handle and forcing the two spring retainers in the umbrella canes to release the outer telescopic tubes of the canes, and characterized by combining two separate release devices in one with a T plate aligned with two retainers so as to unfold two shades simultaneously with one hand.

BACKGROUND AND SUMMARY OF THE INVENTION 
A conventional double-shade umbrella also known as paramours' umbrella is a 
combination of two separate umbrellas. This double-shade umbrella has two 
separate release mechanisms for its two joined shades on two radial frames 
which have to be folded or unfolded simultaneously. To open the umbrella, 
one has to use both hands to hold the umbrella canes one by one and press 
the release keys respectively and simultaneously so that the two joined 
shades will be opened simultaneously without damage to the umbrella ribs 
and shades. In other words, special care must be taken to use the umbrella 
or damage would be caused when only one shade and its radial frame is 
suddenly opened. 
The inventor has engaged in the design and manufacture of various umbrellas 
for many years and known well the construction and features of the 
paramours' umbrella. Aimed at the aforesaid disadvantages, improvement is 
made as described below. 
The release device of double-shade umbrella of this invention comprises a T 
plate installed in the umbrella handle which, when pressed, can force the 
retainers in the umbrella canes to retreat and let the two joined shades 
open simultaneously. So the main purpose of this invention is to meet the 
structural nature of double-shade umbrella and to substitute a single 
release device for two so as to open the two joined shades simultaneously 
by one push, to prevent damage due to carelessness, and to increase the 
safety and durability. 
Another purpose of this invention is to make the use of such umbrella 
easier by changing the two-hand operation to one-hand operation.

DETAILED DESCRIPTION 
Referring now to the drawings the nature of the release device of this 
invention is described as follows: 
As shown in FIG. 1 and FIG. 2, the umbrella handle 10 has a holder 11 
fitted over its end, and three long elliptical holes 21, 22, 23 among 
which the holes 21, 22 are for accommodating two umbrella canes 24, 25. 
The long elliptical holes are designed to give room for outward movement 
of the umbrella canes 24, 25 when the joined shades (not shown) are 
unfolded. The middle hole 23 is designed for esthetical and 
weight-reducing purpose. In addition, a cross slot 26 is provided across 
the three holes 21, 22, 23 for accommodating a T plate 27 of which the 
release key 28 comes out of the hole 29 in the front side of the umbrella 
handle 10. The inner tubes 24, 25 of the telescopic umbrella canes with 
their ends against the bottoms of the holes 21, 22 have key heads 33, 34 
protruding out into the cross slot 26 and against the T plate 27. The 
outer tubes 31, 32 of the telescopic umbrella canes are above the holes 
21, 22. When the release key 28 is pressed, the T plate 27 is pushed 
forward and forces the key heads 33, 34 to retreat, at the same time, two 
retainers 35, 36 in the retaining holes 37, 38 retaining the outer tubes 
31, 32 are also forced to retreat and release the outer tubes 31, 32 which 
slide upward. Two shades on the folding radial frames are unfolded at the 
same time. The inner tubes 24, 25 of the telescopic umbrella canes have 
holes 41, 42 at their lower ends to be used with the holes 43, 44 in the 
umbrella handle 10 for fastening by means of a pin or bolt (not shown). 
From FIG. 3, it is clearly seen that when the T plate 27 is pressed, the 
release key heads 33, 34 protruding outside the inner tubes 24, 25 of the 
telescopic umbrella canes against the T plate 27 will retreat together 
with the retainers 35, 36 inside the inner telescopic tubes 24, 25 and 
release the outer telescopic tubes 31, 32 which will then slide upward. 
Accordingly, the release device of this invention which is very simple, 
novel and practical, can improve the separate operation of a conventional 
double-shade umbrella and indirectly increase the protection of the same.