Exercise devices – Involving user translation or physical simulation thereof
Reexamination Certificate
2000-08-09
2001-10-23
Crow, Stephen R. (Department: 3764)
Exercise devices
Involving user translation or physical simulation thereof
C482S148000, C280S218000
Reexamination Certificate
active
06306065
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to an exercising cart structure in which one end of a support beam is rotatably connected with a front wheel frame, while the other end of the support beam is reciprocally slidably fitted with a rear wheel frame. Two front wheels and two rear wheels are respectively one-way rotatably mounted at two ends of the front and rear wheel frames. In use, a user sits on the seat and holds the handlebar of the front wheel frame with two hands with both feet stepping on two step pads of the front wheel frame. The user's feet push the front wheel frame forward and then the user's body and hip portion exert a force onto the rear wheel frame to move the same forward relative to the front wheel frame. Accordingly, the front and rear wheel frames alternately move forward so that the exercising cart can gradually move forward. During the movement, a user can hold the handlebar to turn the front wheel frame and control the moving direction of the exercising cart so as to achieve a harmonically exercising effect for the whole body.
The applicant's Taiwanese Patent Publication No. 86206463 discloses a crawling exerciser for a user to indoors exercise his/her body. When using such exerciser, the user must prostrate himself/herself and hold two sides of the front wheel frame with both hands and step on the step boards of the rear wheel frame with both feet. Then the user pushes the front wheel frame with both hands to move to a fixed position and then crouches his/her body to pull the rear wheel frame with both feet. Accordingly, the entire exerciser can gradually move forward. During the movement, the user must twist his/her body and turn the front wheel frame to control the moving direction. This achieves a harmonically and evenly exercising effect. In such exercise, the prostration and forward movement will achieve a relatively violent exercising effect so that it is hard to continuously use such exerciser for a long time.
The applicant's Taiwanese Patent Application No. 88207603 discloses an exercising cart as shown in
FIGS. 1 and 2
. In this exercising cart, a rear wheel frame
2
is freely back and forth slidably fitted with one end of a central support beam
3
. A front wheel frame
1
is mounted at the other end of the support beam
3
. Two front wheels
4
and two rear wheels
5
are respectively one-way rotatably mounted at two ends of the front and rear wheel frames
1
,
2
. The opposite inner sides of the front and rear wheel frames
1
,
2
are respectively disposed with two extension plates
24
for hooking a resilient member
25
. A user sits on the seat
23
of the rear wheel frame
2
and holds two ends of the handlebar
13
of the front wheel frame
1
with two hands. The user's both feet step on two step pads of the front wheel frame
1
. The user's feet first push the front wheel frame
1
to move to a fixed position. Then, the user's hip portion exerts a force onto the rear wheel frame
2
to pull the same forward. The resilient member
25
provides a resilient pulling force to help in the pulling of the rear wheel frame
2
. Accordingly, the exercising cart can gradually move forward. During the movement, the user's entire body is harmonically and evenly exercised.
In the above exercising cart, a central pivot seat
111
is disposed on the front beam
11
of the front wheel frame
1
. Two sides of the pivot seat
111
are formed with stop blocks. A rotary shaft having engaging blocks is inserted in the pivot seat
111
. When the exercising cart is turned left or right, the engaging blocks will be stopped by the stop blocks so as to restrict the turning angle within a predetermined range. Therefore, the user can turn the exercising cart by a desired angle, while ensuring the safety in turning.
In addition, the above exercising cart, hooking members are disposed at front and rear ends of the central support beam, whereby several exercising carts can be interconnected for multiple users to play.
SUMMARY OF THE INVENTION
It is a primary object of the present invention to provide an improved exercising cart structure which ensures safety during movement of the central operation beam. The exercising cart includes a support beam, a front wheel frame and a rear wheel frame having a telescopic assembly. One end of the support beam is connected with the front wheel frame, while the other sliding end of the support beam is nested into the telescopic assembly. A set of rollers are disposed in one end of the telescopic assembly facing the front wheel frame. The other end of the telescopic assembly is close for preventing the sliding end of the support beam from slipping out of the telescopic assembly. The sliding end of the support beam cooperates with the rollers in the telescopic assembly to reciprocally slide within the telescopic assembly. The sliding end of the support beam is always reciprocally telescopically slided within the telescopic assembly without protruding outward so that the environmental persons and articles are protected from being hurt during movement of the exercising cart. Therefore, the safety in use of the exercising cart is ensured.
The present invention can be best understood through the following description and accompanying drawings wherein:
REFERENCES:
patent: 3572701 (1971-03-01), Agamian
patent: 3589720 (1971-06-01), Agamian
patent: 4071261 (1978-01-01), Winchell
patent: 4225132 (1980-09-01), Archambault
patent: 4595197 (1986-06-01), Hagstrom et al.
Crow Stephen R.
Dougherty & Troxell
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