U.S. patent number 3,847,462 [Application Number 05/329,921] was granted by the patent office on 1974-11-12 for sliding drawer for tables and office desks.
This patent grant is currently assigned to Ing. C. Olivetti & C., S.p.A.. Invention is credited to Renato Repetti.
United States Patent |
3,847,462 |
Repetti |
November 12, 1974 |
**Please see images for:
( Certificate of Correction ) ** |
SLIDING DRAWER FOR TABLES AND OFFICE DESKS
Abstract
A sliding drawer for tables and office desks adapted to be
secured upon the lower surface of the desk plate, comprising two
guiding section irons disposed between the drawer and the desk
plate, the two guiding section irons being sliding with respect to
the drawer and the desk plate. The drawer is secured upon the desk
plate by means of two pairs of expansion bolts locked in blind
holes of the desk plate. Each of the expansion bolts pairs is
inserted into an opening of the guiding section irons so as to
support and to allow the sliding motion of the drawer.
Inventors: |
Repetti; Renato (Forte Dei
Marmi, IT) |
Assignee: |
Ing. C. Olivetti & C.,
S.p.A. (Ivrea (Turin), IT)
|
Family
ID: |
11278409 |
Appl.
No.: |
05/329,921 |
Filed: |
February 5, 1973 |
Foreign Application Priority Data
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Feb 10, 1972 [IT] |
|
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52907/72 |
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Current U.S.
Class: |
312/334.23 |
Current CPC
Class: |
A47B
88/407 (20170101); A47B 88/49 (20170101); A47B
2210/0062 (20130101) |
Current International
Class: |
A47B
88/08 (20060101); A47B 88/04 (20060101); A47b
088/04 () |
Field of
Search: |
;312/330,345,342,341NR
;85/70 ;308/3.6 ;403/22,277 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: McCall; James T.
Attorney, Agent or Firm: Schaefer; Ira J.
Claims
What I claim is:
1. A sliding drawer device for tables and office desk comprising a
desk plate having a top surface and a bottom surface, said bottom
surface housing two pairs of reciprocally parallel blind holes, a
drawer assembly including a drawer having two side walls, two
guiding section irons, means connecting said side walls to said two
guiding sections irons below said two pairs of holes and parallel
thereto, respectively, and two pairs of expansion bolts inserted in
said blind holes, each of said irons including an upper wall
defining a longitudinal slit, and said pair of expansion bolts
including a first flange, a screw connected to said first flange,
an expandable sleeve surrounding said screw, and a head joined to
said screw for compressing said sleeve against said first flange
for locking said expandable sleeve in said hole, said head
comprising a second flange contacting said bottom surface of said
desk plate, a pin projecting from said second flange, and slidably
engaging the slit below the upper wall of said section irons and an
enlarged portion for slidably guiding said upper wall between said
second flange and said enlarged portion of said head to enable the
sliding motion of said drawer with respect to said desk plate.
2. A sliding drawer device according to claim 1, wherein said
connecting means includes a pin and slot connection comprising two
pairs of guiding pins secured to said second irons and two other
walls of said drawer connected to said two side walls, each of said
other walls having a guiding slit thereon engaging said guiding
pins for slidably guiding said section irons with respect to said
drawer.
3. A sliding drawer device according to claim 2 wherein said
section irons have a substantially rectangular cross section and
each of said side walls includes two vertical walls, each of said
other walls comprising a horizontal wall connecting said two
vertical walls to define a housing on which said section irons are
located.
4. A sliding drawer assembly for tables and office desk of the type
including a plate having a top surface and a bottom surface, said
bottom surface including two pairs of blind holes aligned in two
parallel rows, two pairs of expansion bolts locked in said blind
holes, a sliding drawer comprising a bottom wall and two side walls
perpendicular to said bottom wall, each of said side walls
including two vertical walls and a horizontal wall interconnecting
said two vertical walls to define an upper enclosure and a lower
enclosure, said horizontal wall including two horizontal slits, two
guiding section irons, two guiding pins fixed to said section irons
and each engaged in one of the two horizontal slits for guiding
each one of said section irons on said upper enclosure through a
first stroke substantially equal to the length of said horizontal
slits, said section irons being provided with two corresponding
longitudinal slits each slidably engaged by one pair of said
expansion bolts for slidable movement with respect to said desk
plate through a second stroke, said first and said second strokes
enabling said drawer to be completely extracted from said plate.
Description
CROSS-REFERENCE TO RELATED APPLICATION
Applicant claims priority from the corresponding Italian Utility
Model Application, Ser. No. 52907-B/72, filed Feb. 14, 1973.
BACKGROUND OF THE INVENTION
The present invention relates to a sliding drawer for tables and
office desks, adapted to be secured upon the lower surface of the
desk plate, comprising two guiding section irons on the drawer
sides and slidable with respect to the desk plate and with respect
to the said drawer.
Some drawer types are known the securing operation whereof upon the
desk plate is carried out by guides inserted into grooves provided
on the drawer sides. These guides require a certain precision
degree in the manufacturing operations in order to obtain a
satisfactory sliding motion of the drawer whereby such guiding
means generally results in being relatively expensive.
SUMMARY OF THE INVENTION
The present invention provides a sliding drawer which is secured
upon said desk plate by means of two pairs of expansion bolts
locked in blind holes of said plate, each of said pairs of
expansion bolts being inserted into an opening of said guiding
section irons so as to support and to allow the sliding motion of
said drawer.
A preferred embodiment of the invention is illustrated by way of
example by the following description and the accompanying
drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a partial sectional perspective view of a desk plate with
a stationary carrying drawer according to the model;
FIG. 2 is a side sectional view of the drawer;
FIG. 3 is a detail of the drawer.
DETAILED DESCRIPTION OF THE INVENTION
The drawer, which is generically designed by 50 (FIG. 1), is
particularly of the stationary carrying type and is made of a
single part of plastic material. The drawer is divided inside into
a first section 1 and into three other sections 2 which are smaller
than the previous one. The drawer is made of a bottom 3, a front
wall 4, a rear wall 6 and side walls 7 divided so as to build up a
chamber 8 on each drawer side.
Each of the two chambers 8 is divided transversely by a vertical
wall 9 (FIG. 2) and by a horizontal wall 11 provided with two
horizontal guiding slits 16 (FIG. 1). In this way three inclosures
are built up, a first guiding inclosure 12 (FIG. 2) located on the
top side of the drawer and two inclosures 13 and 14 located on the
lower side of the drawer.
Sliding in the two slits 16 of each wall 11 are two guiding pins 17
and 18 secured by rivets upon a lower wall of a section iron 19
housed in the guiding inclosure 12. The section iron 19 has a
section substantially rectangular having an upper wall provided
with a longitudinal slit 38 (FIG. 1). The section iron 19 (FIG. 2)
may slide with respect to the drawer through a first stroke being
equal to the length of the two longitudinal slits 16. Both guiding
pins 17 and 18 are provided with a ring shaped groove 21. Inserted
into the ring shaped groove 21 of the guiding pin 17 is a rubber
ring 22.
The stationary carrying drawing is secured upon a wooden plate 23
(FIG. 1) of the desk, by means of two pairs of expansion bolts
indicated generically by 24 (FIG. 3). The expansion bolt 24 is made
of a metal portion comprising a screw 29 and an head comprising an
enlarged portion or a thumb knob 26, a pin 27, and a flange 28.
Located about the screw 29 an expansible sleeve or is a rubber
cylinder 31, while screwed on the same screw is a nut 32 pressing
on a flange 34 located between the cylinder 31 and the nut 32 and
being provided with two turned over lugs building up two triangular
teeth 33 (FIG. 1), which grasp the nut so as to prevent its
rotation with respect to the flange 34.
The expansion bolts 24 are inserted into the blind holes 36 of the
plate 23 (FIGS. 1 and 2), driving the teeth 33 into the end of the
hole 36 and thus locking the nut 32 against the rotation. The
locking operation of the expansion bolt 24 is executed by turning
the knob 26 thus causing the screw 29 to be screwed into the nut 32
and the rubber cylinder 31 to be expanded.
The knobs 26 have the object to support the drawer and are
inserted, by pairs, unto the section iron 19 (FIG. 1). The slit 38
of the section irons 19 has a length which is slightly larger than
the diameter of the pin 27 (FIG. 3) and the internal width of the
guiding means 19 is slightly larger than the diameter of the knob
26, so that the guides 19 are able to slide with respect to the
knobs 26.
One end 39 of the section iron 19 is closed by a plastic locking
member 41, in order to prevent the knobs 26 from being taken out
from the front side. The other end 42 of the section irons 19 is
slightly embossed on to side walls 43 (FIG. 1) so that the width of
the section iron 19 is slightly smaller than the diameter of the
knobs 26 on said end portion 42.
The assembling of the drawer 50 first requires that the expansion
bolts 24 are locked into the corresponding holes 39 and then that
the knobs 26 are inserted inside the section irons 19 through the
end portion 42 by forcing the embossed portions 43 by a moderate
manual pressure. The embossed portions 43 prevent the drawer from
being taken out when normally used. For taking out the drawer it is
thus required to overcome the resistance opposed by the embossed
portions 43 against the extraction of the knobs 26.
The section iron 19 is capable of sliding with respect to the pins
27 through a second stroke which is equal to the difference between
the length of the same section iron 19 and the separation existing
between the two knobs 26. This sliding travel, added to the one
recited sliding travel between the section iron 19 and the drawer
50, allows the drawer to open and close completely.
The inclosure 13 (FIG. 2) has dimensions which are slightly smaller
than the adjacent one 14, this causing the rubber member 22 to
strike against the wall 6 when the drawer is opened, thus damping
the impact on the rear wall 6. The separation between the rubber
member 22 and the vertical wall 9 is longer than the one existing
between the locking member 41 and the front wall 4. Therefore, it
is the locking member 41 which damps the impact on the front wall 4
of the drawer 50 when the latter is closed.
* * * * *