U.S. patent number 3,837,525 [Application Number 05/279,181] was granted by the patent office on 1974-09-24 for case having magnetic lock means.
Invention is credited to Sanzo Kobayashi.
United States Patent |
3,837,525 |
Kobayashi |
September 24, 1974 |
CASE HAVING MAGNETIC LOCK MEANS
Abstract
A case includes a bottom part or tray with a cover part which is
telescopically engagable therewith. The top and bottom parts
include interengagable latching members, namely a movable depending
latch carried by the cover which is engagable with a detent or
receiving latch part carried by the bottom when the two parts are
telescopically engaged. The top part or cover includes a recess in
which designed to receive a magnet, which magnetically attracts the
latch parts carried by the cover so that they are displaced out of
engagement with the receiving detents carried by the bottom part to
unlock the device. The magnet is provided with a handle so that it
may be lifted into and out of the recess defined in the top part in
accordance with whether the two parts are to be locked together or
unlocked.
Inventors: |
Kobayashi; Sanzo (Taito-ku,
Tokyo, JA) |
Family
ID: |
14465892 |
Appl.
No.: |
05/279,181 |
Filed: |
August 9, 1972 |
Foreign Application Priority Data
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Nov 17, 1971 [JA] |
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46-107707 |
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Current U.S.
Class: |
220/326; 70/276;
292/144; 292/33 |
Current CPC
Class: |
E05B
47/004 (20130101); B65D 43/021 (20130101); B65D
2543/00194 (20130101); B65D 2543/00648 (20130101); B65D
2543/00555 (20130101); B65D 2543/00805 (20130101); Y10T
292/1021 (20150401); B65D 2543/00694 (20130101); B65D
2543/0074 (20130101); B65D 2543/00296 (20130101); Y10T
70/7057 (20150401); B65D 2543/00537 (20130101); Y10T
292/0836 (20150401); B65D 2543/00231 (20130101); B65D
2543/00518 (20130101) |
Current International
Class: |
B65D
43/02 (20060101); E05B 47/00 (20060101); A47j
027/08 (); A47j 036/10 (); B65d 045/00 () |
Field of
Search: |
;220/55K,55 ;206/DIG.33
;292/144,33 ;70/276 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Hall; George T.
Attorney, Agent or Firm: McGlew and Tuttle
Claims
What is claimed is:
1. A case comprising a bottom substantially rectangular box shaped
bottom part having side walls, at least one of said side walls
having an interior recess defining a detent, a top part of
substantially rectangular box shaped configuration telescopically
engagable over said bottom part, a latch member including a
horizontal portion slidable on said top part and a vertical portion
depending from said horizontal portion and said top part and
defining a hook engagable with said detent of said bottom part,
means biasing said latch member to cause said hook to engage in
said detent, a receiving area demarcated on said top part, a magnet
positionable on said receiving area at a location where its
magnetic field is disposed in the range of said latch member, said
latch member including at least a portion which is magnetically
attractable which is moved by positioning of said magnet in said
receiving area against the force of said biasing means to remove
said hook portion out of engagement with said detent to open said
case.
2. A case according to claim 1 wherein said top part includes a
wall defining a hollow with a viewing opening overlying said latch
member, said latch member being movable in the hollow of said wall
below said viewing opening and being visible in said viewing
opening to indicate when said casing is latched and unlatched.
3. A case according to claim 1 wherein said bottom part includes a
recess defining a detent on each side wall, and said casing also
including a latch for engagement with each detent located on
respective sides of said receiving area, each of said latches
including a depending portion with a hook shaped end engagable with
said detent, each of said latches including a beveled face which is
deflectable to clear said detent by the area of said side walls of
said bottom part adjacent to said detent when said top part is
closed over said bottom part and being movable after deflection
into engagement with said detent.
4. A case of a covering type characterized by a case (10) with
connections (11) (11') having a lid (1) with holes (8) (8') therein
with a ceiling wall having a surface with a central indentation
(2), and flat hollow indentations (4) (4') on each side of said
central indentation (2), a magnetic device (3) engageable and
disengageable in the central indentation, magnetic pieces (5) (5')
located in the hollow indentations (4) (4') movable in respect to
the magnetic device when in the central indentation (2), spring
elements (6) (6') biasing said magnetic pieces (5) (5') to an outer
position, said magnetic pieces having hooked projections (7) (7')
turning outward and protruding from the underside of the lid (1)
through the holes (8) (8') and engageable with the connections (11)
(11') of said case when urged by said spring elements, but being
movable against the biasing force of said spring elements by said
magnetic device to disengage from said connections.
5. A case comprising a bottom part, a cover part engageable with
said bottom part, interengageable latch parts carried on said
bottom part and said cover part in a position to interengage when
said cover part is engaged on said bottom part for locking said
parts together and including a magnetically attractable
displaceable latch member, and magnet means associated with the
case for attracting and releasing said latch member for opening and
closing said latch parts, said cover part being telescopically
engageable with said bottom part and wherein said bottom part
comprises a rectangular box shaped portion having side walls and at
least one of said side walls having a recess defining a detent,
said magnetically attractable latch member comprising a member
carried on said top part and being displaceable on said top part,
said member having a hook-shaped latch engageable with said detent,
means for biasing said latch member to urge the hook-shaped portion
into engagement with said recess detent of said bottom part, said
magnet being positionable to overcome the force of said biasing
means to move said latch member out of engagement with said detent.
Description
FIELD OF THE INVENTION
This invention relates in general to the construction of
interengagable container parts and in particular to a new and
useful case or container which is made up of telescopically
interengagable top and bottom parts and which includes magnetic
means for effecting latching and unlatching of the two parts.
DESCRIPTION OF THE PRIOR ART
The present invention relates to the lock device of the lid of a
container such as a pencil case. As a conventional container such
as a pencil case has not been provided with a lock device, more or
less expensive commodities can not be contained with safety.
Recently some pencil cases have been provided with the lock device,
but the mechanism is complex and expensive. The object of this
invention is to offer a container such as a pencil case having the
lock device which is simple in its mechanism.
Accordingly it is an object of the invention to provide an improved
container having a novel means for latching and unlatching two
interengagable container parts which includes a magnet which is
positionable to attract the latch members to displace it either
into a latching position or into an unlatched position, in
accordance with the setting of the magnet and the latched
parts.
A further object of the invention is to provide a container which
includes a rectangular box shaped bottom part and similarly shaped
upper part which is engagable over the bottom part and wherein the
top part includes a depending latch member on each side which are
engagable with respective receiving detents defined on the side
walls of the bottom part when the two parts are telescopically
interengaged and the container is closed, and wherein the top part
includes a recess for receiving a magnet which when positioned in
the recess will attract the latch members of the top part to move
them out of engagement with the bottom latch part and detents.
A further object of the invention is to provide a case which is
simple in design, rugged in construction and economical to
manufacture.
For an understanding of the principles of the invention, reference
is made to the following description of typical embodiments thereof
as illustrated in the accompanying drawing.
BRIEF DESCRIPTION OF THE DRAWINGS
In the Drawings:
FIG. 1 is a front top exploded perspective view of a case
constructed in accordance with the invention;
FIG. 2 is a top side perspective view of the bottom portion of the
case shown in FIG. 1;
FIG. 3 is a bottom side perspective view of the top portion of the
case shown in FIG. 1 and with a portion thereof being broken
away;
FIG. 4 is a section taken along the line A--A of FIG. 1;
FIG. 5 is a section taken along the line A'--A' of FIG. 1;
FIG. 6 is a section similar to FIG. 4 showing the magnetic device
in the attracted position;
FIG. 7 is a view similar to FIG. 5 showing the magnetic device in
position.
GENERAL DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring to the drawings in particular, the invention embodied
therein comprises a casing generally designated 10, which includes
a lid or cover part 1 of rectangular box shaped form which
telescopically engages over a bottom part of similar form.
In accordance with the invention the top part 1 includes a top wall
with a recess or indentation 2 of rectangular form shaped to
receive the bottom portion of a magnet holder 3 which includes a
handle portion for lifting it into and out of the indentation or
recess 2. The top wall of the top part 1 includes a hollow portion
with cavities 4 and 4' on each side of the indentation 2 as shown
in FIG. 4. The two cavities include latch means which are
interengagable with detents 11 and 11' of the bottom 6 when the two
parts are telescoped together. The latch means include hook shaped
latch members 7 and 7' having horizontal portions which ride in the
respective hollows 4 and 4' and depending portions which terminate
in hooks 9 and 9' which engage into recesses or detents 11' and 11
respectively of the bottom part 10. When the latch parts 7 and 7'
are in the operative position the hooks 9 and 9' will engage
automatically into the detent holders 11' and 11. In accordance
with a feature of the invention the entire latch part 7 and 7' is
made of magnetically attractable material or it includes a
magnetically attractable portion 5 and 5' respectively which ride
in the hollow spaces 4 and 4' and which are biased into an
operative position by springs 6 and 6' respectively. In the
operative position shown in FIG. 4 the hooks engage into the
detents 11' and 11 of the bottom part and hold the two parts
together so that they may not be unlocked. However when the latches
7 and 7' are attracted by a magnetic field the hooks 9, 9' are
moved out of engagement with the associated detents 11, 11'.
The example shown in the drawing consists of a case of a covering
type made of hard synthetic resin. In the example, the engagement
or disengagement of the hooked projections (7) (7') and the
connections (11) (11') can be discerned by the indication of the
displaying areas (12) (12') provided to the outside of the magnetic
pieces (5) (5') through the peep holes (13) (13') provided to the
ceiling wall of the hollow indentations (4) (4').
In the present invention described above, by lightly pressing the
lid (1) placed on the case proper (10) the hooks (9) (9') at the
tip of the magnetic pieces (5) (5') are engaged with the
connections (11) (11') to make it impossible to open the lid (1)
due to the mechanism in which the magnetic pieces (5) (5') are
forced into against the elasticity of the spring elements (6) (6')
and then withdrawn to the former position when the jaws of the
hooked projections (7) (7') engage with the protruded edges of the
connections (11) (11'). On the other hand, when the magnetic device
(3) is fixed into the indentation (2) the magnetic pieces (5) (5')
are drawn near and the engagement between the hooks at the tip of
the projections (7) (7') and the connections (11) (11') can be
released.
As mentioned above, in the present invention relating to the case
of a covering type the indentation (2) is formed on the surface of
the ceiling wall of the lid (1) and the flat hollow indentations
(4) (4') are formed on the both sides of said indentation (2) with
which the magnetic device (3) is connected or disconnected, the
magnetic pieces (5) (5') being provided to the hollow indentations
(4) (4') so that the former can proceed to or recede from the
indentation (2), the spring elements (6) (6') being provided so
that the magnetic pieces (5) (5') can be withdrawn to the farther
position, the hooked projections (7) (7') turning outward being
provided to the underside of said magnetic pieces (5) (5') and
protruded to the underside of the lid (1) through the holes (8)
(8'), and the hooks (9) (9') at the tip of the projection (7) (7')
are made to engage with the connections (11) (11') provided to the
case proper (10), so that it can properly be said that the present
invention has excellent merits in the easy and exact engagement and
disengagement of the lid (1) as described in the above example,
especially in the exact engagement due to the elasticity of the
spring elements (6) (6') provided to the magnetic pieces (5)
(5').
* * * * *