U.S. patent application number 11/524915 was filed with the patent office on 2008-03-27 for sit-up exerciser.
Invention is credited to Chih-Liang Chen.
Application Number | 20080076649 11/524915 |
Document ID | / |
Family ID | 39225744 |
Filed Date | 2008-03-27 |
United States Patent
Application |
20080076649 |
Kind Code |
A1 |
Chen; Chih-Liang |
March 27, 2008 |
Sit-up exerciser
Abstract
A sit-up exerciser has a body and a back bracket. The back
bracket is mounted on and pivotally connects to the body. Multiple
elastic elements transversely connect to the lower end of the back
bracket and the body. When a user's back presses against the back
bracket, the back bracket can be pivoted relative to the body.
Meanwhile, the user should resist the resilient force of the
elastic elements to keep exercising. Furthermore, the exerciser has
a small volume for convenient storage.
Inventors: |
Chen; Chih-Liang; (Pateh
City, TW) |
Correspondence
Address: |
ROSENBERG, KLEIN & LEE
3458 ELLICOTT CENTER DRIVE-SUITE 101
ELLICOTT CITY
MD
21043
US
|
Family ID: |
39225744 |
Appl. No.: |
11/524915 |
Filed: |
September 22, 2006 |
Current U.S.
Class: |
482/140 ;
482/142 |
Current CPC
Class: |
A63B 21/0421 20130101;
A63B 21/04 20130101; A47C 7/405 20130101; A63B 2208/0233 20130101;
A63B 23/0211 20130101; A63B 21/023 20130101; A63B 23/0233 20130101;
A63B 21/055 20130101; A63B 21/1609 20151001; A63B 21/4047 20151001;
A63B 2210/02 20130101; A63B 21/0555 20130101 |
Class at
Publication: |
482/140 ;
482/142 |
International
Class: |
A63B 26/00 20060101
A63B026/00; A63B 71/00 20060101 A63B071/00 |
Claims
1. A sit-up exerciser comprising: a body having multiple feet
formed respectively on two ends of the body, and each foot having a
distal end; a back stretcher provided transversely in the body near
one end of the body; two fasteners formed on a middle portion of
the body; and a seat mounted on a top portion of the body near the
other end of the body; a back bracket mounted on and extending
upward from the body between the seat and the back stretcher and
having a lower end pivotally connecting to the fastener; and
multiple elastic elements mounted between the lower end of the back
bracket and the back stretcher; and armrest assemblies being
mounted respectively on two sides of the body, and each armrest
assembly having an armrest having a distal end being at the same
level of the distal end of the foot of each side stretcher.
2. The sit-up exerciser as claimed in claim 1, wherein the body has
two parallel and curved side stretchers, and each side stretcher
has two ends; and the feet of the body are formed respectively on
the two ends of the side stretchers.
3. The sit-up exerciser as claimed in claim 2, wherein the body has
a front stretcher mounted transversely in a low front end of the
seat; and each armrest assembly further has a mounting bar engaging
the front stretcher; and the armrest of each armrest assembly being
curved and protruding backward and further having a proximal end
connecting to the mounting bar.
4. The sit-up exerciser as claimed in claim 1, wherein the back
bracket has two rods respectively mounted pivotally on the
fasteners of the body; and multiple cylinders mounted transversely
between the rods.
5 The sit-up exerciser as claimed in claim 4, wherein the back
stretcher of the body has multiple evenly-spaced hooks; the post of
the back bracket has multiple hooks corresponding to the hooks on
the back stretcher; and each elastic element connects to one of the
hooks on the back stretcher and a corresponding one of the hooks on
the post.
6 The sit-up exerciser as claimed in claim 5, wherein the elastic
elements are springs.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates to a sit-up exerciser, and
more particularly to a sit-up exerciser with a small volume and
easy to be moved.
[0003] 2. Description of the Related Art
[0004] At present, all kinds of exercisers are introduced into the
market for people to exercise indoor such as walk exercisers,
weight lifters, etc. However, a conventional sit-up exerciser is
rare in the market and is usually set up in the gym. Furthermore,
the conventional sit-up exerciser has a large volume and a heavy
weight with inconvenient moving.
[0005] Therefore, the invention provides a sit-up exerciser to
mitigate or obviate the aforementioned problems.
SUMMARY OF THE INVENTION
[0006] The main objective of the present invention is to provide a
sit-up exerciser with a small volume and easy to be moved.
[0007] Other objectives, advantages and novel features of the
invention will become more apparent from the following detailed
description when taken in conjunction with the accompanying
drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0008] FIG. 1 is a perspective view of a sit-up exerciser in
accordance with the present invention;
[0009] FIG. 2 is an exploded perspective view of the sit-up
exerciser in FIG. 1;
[0010] FIG. 3 is another perspective view of the sit-up exerciser
in FIG. 1;
[0011] FIG. 4 is an operational side view of the sit-up exerciser
in FIG. 1;
[0012] FIG. 5 is another operational side view of the sit-up
exerciser in FIG. 1; and
[0013] FIG. 6 is an operational perspective view the sit-up
exerciser in FIG. 1.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
[0014] With reference to FIGS. 1-3, a sit-up exerciser in
accordance with the present invention has a body (10), a back
bracket (20) and two armrest assemblies (30).
[0015] The body (10) has two parallel and curved side stretchers
(11), a back stretcher (12), a seat (15) and a front stretcher
(14). Each side stretcher (11) has a foot integrally formed in an
end of the side stretcher (11) so that the foot can stand on the
ground to support the body (10). The back stretcher (12) is
provided transversely between the side stretchers (11) and has
multiple evenly-spaced hooks (120) respectively defined in the back
stretcher (12) and two fasteners (13) mounted on a middle of the
back stretcher (12). The seat (15) is mounted transversely between
front parts of the side stretchers (11). The front stretcher (14)
is mounted transversely in a low front end of the seat (15).
[0016] The back bracket (20) is mounted between and extends upward
from the side stretchers (11) and has two rods (21), multiple
evenly-spaced cylinders (22), a post (23) and multiple elastic
elements (24). The rods (21) are respectively mounted pivotally on
the fasteners (13) of the body (10) and respectively have an lower
end. The cylinders (22) are mounted transversely between the rods
(21). The post (23) is mounted between the lower ends of the rods
(21), aligns with the back stretcher (12) and has multiple hooks
(230) corresponding to the hooks (120) on the back stretcher (12).
The elastic elements (24) are mounted between the back stretcher
(12) and the post (23) and each elastic element (24) connects to
the corresponding hooks (120) on the back stretcher (12) and the
post (23). In this preferred embodiment of the present invention,
the elastic elements (24) are springs.
[0017] The armrest assemblies (30) are mounted respectively on two
sides of the body (10). Each armrest assembly (30) has a mounting
bar (31) and an armrest (32). The mounting bar (31) engages with
the front stretcher (14). The armrest (32) is arcuate and connects
to the mounting bar (31).
[0018] With further reference to FIG. 4, a user sits in the seat
(15) and leans against the cylinders (22). Arms of the user can
rest on the armrests (32). When the user's back presses against the
back bracket (15), the back bracket (20) can be pivoted relative to
the body (10). Meanwhile, the user should resist the resilient
force of the elastic elements (24) to keep exercising.
[0019] With further reference to FIGS. 5 and 6, the user's back
stops pressing against the back bracket (15), the resilient force
of the elastic elements (24) pushes the back bracket (20) to resume
to an original status. Because the structure of the present
invention is simple, the present invention occupies a small volume
and is easy to be moved.
[0020] It is to be understood, however, that even though numerous
characteristics and advantages of the present invention have been
set forth in the foregoing description, together with details of
the structure and function of the invention, the disclosure is
illustrative only. Changes may be made in details, especially in
matters of shape, size, and arrangement of parts within the
principles of the invention to the full extent indicated by the
broad general meaning of the terms in which the appended claims are
expressed.
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