U.S. patent application number 10/096548 was filed with the patent office on 2003-09-18 for folding arm for a musical instrument stand.
Invention is credited to Hsieh, Wu-Hong.
Application Number | 20030173484 10/096548 |
Document ID | / |
Family ID | 28039035 |
Filed Date | 2003-09-18 |
United States Patent
Application |
20030173484 |
Kind Code |
A1 |
Hsieh, Wu-Hong |
September 18, 2003 |
FOLDING ARM FOR A MUSICAL INSTRUMENT STAND
Abstract
A folding arm mounted on a column of a musical instrument stand
has a seat mounted on the column. The seat has a ring. A tube is
perpendicular to the column and extending outwards from the ring. A
passage is longitudinally defined in the tube. A slot is
longitudinally defined through a front end of the tube. An elbow
has a rear part pivotally mounted in the slot by a pivot pin. Two
movable pieces are received in the passage and pushed by the rear
part to tightly abut the column when the elbow is perpendicular to
the column. A bar is mounted on a front part of the elbow. Whereby,
when the elbow is perpendicular to the column, the arm is secured
on the column. When the elbow is pivoted to a position parallel to
the column, the arm is movable for adjusting the support height of
the stand.
Inventors: |
Hsieh, Wu-Hong; (Lu Chou
City, TW) |
Correspondence
Address: |
DELLETT AND WALTERS
310 S.W. FOURTH AVENUE
SUITE 1101
PORTLAND
OR
97204
US
|
Family ID: |
28039035 |
Appl. No.: |
10/096548 |
Filed: |
March 12, 2002 |
Current U.S.
Class: |
248/291.1 ;
248/225.21; 248/230.1 |
Current CPC
Class: |
F16M 11/245 20130101;
F16M 13/00 20130101; F16M 11/041 20130101; F16M 2200/027 20130101;
G10G 5/00 20130101; F16M 11/28 20130101 |
Class at
Publication: |
248/291.1 ;
248/230.1; 248/225.21 |
International
Class: |
E04G 003/00 |
Claims
What is claimed is:
1. A folding arm (2) mounted on a column (1) of a musical
instrument stand, the arm comprising: a seat (20) mounted on the
column (1), the seat (20) having a body (21) and a tube (22)
perpendicular to the column (1) and extending outwards from the
body (21), the tube (22) having a passage (221) longitudinally
defined through a rear end of the tube (22), a slot (222)
longitudinally defined through a front end of the tube (22) and in
communication with the passage (221); an elbow (30) having a front
part (322), a rear part (321) pivotally mounted in the slot (222)
by a pivot pin (33) mounted in the front end of the tube (22), at
least one movable piece (31) received in the passage (221) and
pushed by the rear part (321) to tightly abut the column (1) when
the elbow (30) is perpendicular to the column (1); and a bar (40)
mounted on the front part (322) of the elbow (30), whereby, when
the elbow (30) is perpendicular to the column (1), the arm (2) is
secured on the column (1); when the elbow (30) is pivoted to a
position parallel to the column (1), the at least one movable piece
(31) is not pushed by the rear part (321) and the arm (2) is
movable for adjusting a support height of the musical instrument
stand.
2. The folding arm as claimed in claim 1, wherein the body (21) of
the seat (20) is a ring (21) with an opening (211), and the passage
(221) is in communication with the opening (221).
3. The folding arm as claimed in claim 1, wherein the body (21) of
the seat (20) is a plate (21') being composed of a first wing
(211') extending upwards and a second wing (212') extending
downwards, the plate (21') has a first finger (213') and a second
finger (214') respectively formed at distal ends of the wings
(211', 212') and respectively attached to two ears (215') formed on
the column (1).
4. The folding arm as claimed in claim 1, wherein a distance
between an end surface (A) of the rear part (321) and the pivot pin
(33) is larger than a distance between a top surface (B) of the
rear part (321).
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention is related to a musical instrument
stand, and more particularly to an arm for the musical instrument
stand that can be folded.
[0003] 2. Description of Related Art
[0004] Referring to FIG. 7, a conventional musical instrument stand
has a fixed arm (51) secured on a vertical column (50). The fixed
arm (51) can not be adjusted according to desire of a user and so
is not convenient.
[0005] Referring to FIG. 8, another conventional musical instrument
stand has an adjustable arm (70) movably mounted on a vertical
column (60). The adjustable arm (70) has a ring (72) provided on
the column (60). A tube (71) extends from the ring (72). A screw
(73) is threadingly mounted on the ring (72). When the screw (73)
is tightened, the ring (72) is secured on the column (60). When the
screw (73) is loosened, the ring (72) is movable along the column
(60) for adjusting the height of the arm.
[0006] However, it is very inconvenient for a user to adjust the
arm by loosening and tightening the screw (73), and it is found
that the thread of the screw (73) wears such that clamping effect
is unreliable.
[0007] Therefore, the invention provides an improved arm for an
instrument stand to mitigate and/or obviate the aforementioned
problems.
SUMMARY OF THE INVENTION
[0008] The main objective of the invention is to provide a folding
arm for a musical instrument stand that is convenient to adjust by
folding the arm.
[0009] Another objective of the invention is to provide a folding
arm for a musical instrument stand that has a small size which is
convenient for storing or transporting the stand.
[0010] Other objects, 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
[0011] FIG. 1 is an exploded perspective view of an arm for a
musical instrument stand in accordance with the invention;
[0012] FIG. 2 is a cross sectional view of the arm;
[0013] FIG. 3 is a perspective view of the musical instrument stand
mounted with the arms of the invention;
[0014] FIG. 4 is a side sectional view showing that the arm is
folded;
[0015] FIG. 5 is a side sectional view of another embodiment of the
arm in accordance with the invention;
[0016] FIG. 6 is a side sectional view showing that the arm in FIG.
5 is folded;
[0017] FIG. 7 is a perspective view of a first conventional arm for
a musical instrument stand; and
[0018] FIG. 8 is a perspective view of a second conventional arm
for a musical instrument stand.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
[0019] Referring to FIGS. 1 and 2, an arm (2) in accordance with
the invention is mounted on a vertical column (1) of a musical
instrument stand. The arm (2) is composed of a seat (20), an elbow
(30), and a bar (40).
[0020] The seat (20) has a ring (21) in which the vertical column
(1) is inserted. The ring (21) has an opening (211) defined
therein. A tube (22) is perpendicularly formed on the ring (21). A
passage (221) is longitudinally defined at a rear portion of the
tube (22) and in communication with an interior of the ring (21). A
slot (222) is longitudinally defined at a front portion of the tube
(22) and in communication with the passage (221).
[0021] The elbow (30) has a pivoting member (32) pivotally mounted
in the slot (222) by a pin (33) mounted through the front portion
of the tube (22). A rear part (321) of the pivoting member (32) is
received in the slot (222) and has an aperture (not numbered) in
which the pin (33) is inserted. A distance between the pin (33)
(the aperture) and an end surface (A) of the rear part (321) is
larger than a distance between the pin (33) (the aperture) and a
top surface (B) of the rear part (321). When the elbow (30) is not
folded, the rear part (321) extends in the passage (221).
[0022] The elbow (30) further has a first movable piece (31) and a
second movable piece (34) both received in the passage (221). The
movable pieces (31, 34) are pushed by the rear part (321), so that
the first piece (31) extends in the opening (211) to tightly abut
the column (1). Thus, the seat (20) is fastened on the column (1)
by using the friction between the column (1) and the ring (21) and
between the column (1) and the first movable piece (31).
[0023] The bar (40) is provided on a front part (322) of the elbow
(30) for supporting a musical instrument.
[0024] FIG. 3 illustrates a guitar stand that has a plurality of
the arms (2) of the invention provided thereon and a guitar
supported by the arms (2).
[0025] Referring to FIG. 4, when the arm (2) needs to be adjusted
higher or lower, the bar (40) as well as the elbow (30) is pivoted
upwards 90.degree.. The end surface (A) is retracted from the
passage (221) and the movable pieces (31, 34) are not pushed by the
elbow (30). The first movable piece (31) no longer abuts the column
(1), so that the arm (2) can be moved upwards or downwards along
the column (1) for adjusting the height of the arm. When the arm
(2) arrives the desired position, the bar (40) as well as the elbow
(30) is pivoted downwards 90.degree.. The end surface (A) extends
in the passage (221) again, and the movable pieces (31, 34) are
pushed by the elbow (30). Thus, the seat (20) is fastened on the
column (1) at the desired position.
[0026] Referring to FIGS. 5 and 6, in a second embodiment of the
invention, the seat (20) has a plate (21') with a C-shaped cross
section and being composed of a first wing (211') extending upwards
and a second wing (212') extending downwards. A first finger (213')
and a second finger (214') are respectively formed at distal ends
of the wings (211', 212'). Other structures of the embodiment are
similar to the first embodiment mentioned above. When the movable
pieces (31, 34) are pushed by the elbow (30) to tightly abut the
column (1), the fingers (213', 214') are respectively fastened in
two ears (215') formed on the column (1) by using friction between
the fingers (213', 214') and the ears (215'). Thus, a musical
instrument can be supported by the arm (2).
[0027] When the bar (40) as well as the elbow (30) is folded, the
fingers (213', 214') are disengaged from the ears (215'). Thus, the
arm (2) is detached from the column (1) and can be secured by other
ears at a desired position on the column (1) or be stored. The ears
provide a very secure engagement which is particularly suitable for
heavy musical instruments.
[0028] From the above description, it is noted that the invention
has the following advantages:
[0029] 1. It is very easy and convenient for a user to adjust the
arm (2) by folding the elbow (30).
[0030] 2. When the arm (2) is folded, the size of the instrument
stand is small, which is advantageous to store and transport the
stand.
[0031] 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, and changes may be made in detail, 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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