Land vehicles – Wheeled – Extensible
Reexamination Certificate
1999-09-03
2001-02-27
Swann, J. J. (Department: 3611)
Land vehicles
Wheeled
Extensible
C280S655000, C280S047170, C280S047315
Reexamination Certificate
active
06193264
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a collapsible golf trolley. More particularly, the present invention relates to a collapsible frame device of a golf trolley.
Referring to
FIGS. 1 and 2
, a conventional collapsible golf trolley has an upper frame
11
, a lower frame
12
, and a generally U-shaped upper joint
18
connected to a lower end of the upper frame
11
and an upper portion of the lower frame
12
. A shaft
111
is disposed on an upper end of the lower frame
12
. A positioning fastener A is disposed on a lower portion of the upper frame
11
. An upper bracket
132
is disposed on the upper portion of the lower frame
12
. A lower seat
131
is disposed on a lower end of the lower frame
12
. A handle
19
is disposed on an upper end of the upper frame
11
. A lower joint
14
is disposed on a middle portion of the lower frame
12
. Two support frames
15
are connected to the lower joint
14
. Each support frame
38
is connected to a wheel connector
10
which is connected to a wheel
16
. Two pull rods
17
are connected to the upper frame
11
and the respective support frames
15
. When the upper frame
11
is rotated downward, it is necessary to provide a large room. When the upper frame
11
is extended, the positioning fastener A engages with the shaft
111
in order to position the upper frame
11
stably. However, the upper frame
11
cannot be positioned stably while the upper frame
11
is folded.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a collapsible golf trolley which is easily folded.
Another object of the present invention is to provide a collapsible golf trolley which is easily operated.
In accordance with a first preferred embodiment of the present invention, a collapsible golf trolley comprises a collapsible frame device and a bag disposed on the collapsible frame device. The bag has an upper cap, two protective pads, and two belts. The collapsible frame device comprises an outer pipe, an inner pipe inserted in the outer pipe, a lower joint disposed on a middle portion of the outer pipe, two support frames connected to the lower joint, each of the support frames connected to a wheel connector, the wheel connector connected to a wheel, and two pull rods. A rope is connected to the support frames. A handle is disposed on a top end of the inner pipe. A releasing device is disposed on the outer pipe. The outer pipe has a lateral plate and two L-shaped plates. The L-shaped plates are located at a lower portion of the outer pipe. A spacing is formed between the L-shaped plates. A slide block is disposed on the outer pipe to be slide along the spacing. The slide block has two guide grooves engaging with the L-shaped plates. A recess hole is formed on a top portion of the slide block. Two pivot couplers are disposed on the slide block. Each of the pivot couplers has a notch receiving an end of the respective pull rod. Each of the pull rods is connected to the respective pivot coupler and the respective support frame. A plug block is inserted in a lower end of the inner pipe. The plug block has a through hole. A driven rod has a first bent end inserted in the recess hole of the slide block and a second bent end inserted through the through hole of the plug block. The inner pipe has an oblong hole and a positioning aperture. A positioning block is disposed in the inner pipe. The positioning block has a main seat, a positioning pin device, a first coiled spring, a blocking pin device, a second coiled spring, an upper cover, and a rectangular plate. The main seat has a transverse opening, a transverse hole communicating with the transverse opening, a longitudinal opening, and a longitudinal hole communicating with the longitudinal opening and the transverse opening. The first coiled spring surrounds a portion of the positioning pin device. The positioning pin device has a shank inserted in the transverse hole and an annular flange inserted in the transverse opening. The second coiled spring surrounds a portion of the blocking pin device. The blocking pin device has a blocking rod inserted in the longitudinal hole and a solid cylinder inserted in the longitudinal opening. The solid cylinder has two round apertures. The upper cover covers a top portion of the main seat. The rectangular plate is disposed on the main seat. The rectangular plate faces the oblong hole of the inner pipe. The outer pipe further has a blocking bar, two retainer grooves, and a positioning hole. A hollow casing is disposed in a top end of the outer pipe to receive the inner pipe. The hollow casing has two elastic bars. Each of the elastic bars is inserted in the respective retainer groove. The releasing device has a main mount, the main mount having a hollow interior, and a button disposed in the hollow interior of the main mount. The button has a pressing head protruding outward the main mount, a hollow cylinder, and a center post inserted in a third coiled spring. The center post matches the positioning hole of the outer pipe. When the shank of the positioning pin device enters the positioning hole of the outer pipe, the inner pipe will not be moved, and the blocking rod contacts the annular flange of the positioning pin device. When the pressing head is pressed inward, the center post forces the shank of the positioning pin device disengages from the positioning hole, and the blocking rod blocks the annular flange of the positioning pin device so that the inner pipe will be pulled out of the outer pipe.
In accordance with a second preferred embodiment of the present invention, a collapsible golf trolley comprises a collapsible frame device and a bag disposed on the collapsible frame device. The bag has an upper cap, two protective pads, and two belts. The collapsible frame device comprises an outer pipe, an inner pipe inserted in the outer pipe, a lower joint disposed on a middle portion of the outer pipe, two support frames connected to the lower joint, each of the support frames connected to a wheel connector, the wheel connector connected to a wheel, and two pull rods. A rope is connected to the support frames. A handle is disposed on a top end of the inner pipe. A releasing device is disposed on the outer pipe. The outer pipe has a lateral plate and two L-shaped plates. The L-shaped plates are located at a lower portion of the outer pipe. A spacing is formed between the L-shaped plates. A slide block is disposed on the outer pipe to be slide along the spacing. The slide block has two guide grooves engaging with the L-shaped plates. A recess hole is formed on a top portion of the slide block. Two pivot couplers are disposed on the slide block. Each of the pivot couplers has a notch receiving an end of the respective pull rod. Each of the pull rods is connected to the respective pivot coupler and the respective support frame. A plug block is inserted in a lower end of the inner pipe. The plug block has a through hole. A driven rod has a first bent end inserted in the recess hole of the slide block and a second bent end inserted through the through hole of the plug block. The inner pipe has an oblong hole and a positioning aperture. A positioning block is disposed in the inner pipe. The positioning block has a main seat, a positioning pin device, a first coiled spring, a blocking pin device, a second coiled spring, an upper cover, and a rectangular plate. The main seat has a transverse opening, a transverse hole communicating with the transverse opening, a longitudinal opening, and a longitudinal hole communicating with the longitudinal opening and the transverse opening. The first coiled spring surrounds a portion of the positioning pin device. The positioning pin device has a shank inserted in the transverse hole and an annular flange inserted in the transverse opening. The second coiled spring surrounds a portion of the blocking pin device. The blocking pin device has a blocking rod inserted in the longitudinal hole and a solid cylinder inserted in the longitudinal opening. The solid cylinder has two round apertures. The
Bridge Bennett Egan & Arundel, LLP.
Kamrath Alan
Shriver J. Allen
Swann J. J.
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