Locks – Special application – For control and machine elements
Reexamination Certificate
2002-10-28
2004-02-24
Knight, Anthony (Department: 3676)
Locks
Special application
For control and machine elements
C070S215000, C070S219000, C070S221000, C070S224000, C070S284000
Reexamination Certificate
active
06694786
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a door-locking handle assembly with a built-in combination lock of a pull-out and side-swinging lever-action type, in which a door handle is pivoted to a base body of the assembly so as to be pulled out forward and pushed back rearward relative to the base body and turned on its pivoted end.
2. Description of the Related Art
As is well known in the art, a door locking handle assembly of a conventional type has a construction in which: a base body of the, assembly is fixedly mounted on a door of a box or container, a door handle is pivoted to the base body so as to be pulled out forward and pushed back rearward relative to the base body and further turned sideward on its pivoted end after completion of its pulling-out operation; when the door handle is pulled out of the base body to assume its pulled-up or raised inclination position relative to the base body and turned sideward after completion of its pulling-out operation, a catch plate (i.e., locking member) which serves as a door bolt directly or indirectly connected with the door handle is released from a receiving portion of a stationary frame element (i.e., door frame) of the box or container. In this type of conventional door locking handle assembly, a cylinder lock is incorporated in either the door handle or the base body on the other hand, the door handle is pushed back rearward relative to the base body and held in its folded position or locked position in the base body.
In the conventional door locking handle assembly having the above construction, an available space for mounting the assembly is extremely limited in each of opposite sides of the door to which the assembly is fixedly mounted because the interior space of the box or container for housing various instruments therein is relatively limited due to the presence of the instruments housed in the box or container. Due to this, it is necessary to considerably limit in size the projections of the assembly in opposite directions perpendicular to the plane of the door's surface.
In order to fulfill the above need, it is necessary to reduce in thickness the assembly as a whole by reducing in thickness the door handle and in depth the base body. However, this forces the cylinder lock of the assembly to be considerably reduced in thickness.
On the other hand, in such a thin-type cylinder lock, since the number of sets of disc tumblers and/or pin tumblers incorporated in the cylinder lock as essential components of its internal lock mechanism is small, the number of available keys of such a thin-type cylinder lock is naturally limited. Due to this, in the case where there are a large number of eligible users or persons using the instruments contained in the box which is provided with the door locking handle assembly employing the cylinder lock in a condition in which these users or persons are controlled by a control operator through a computerized personal management system, it is difficult to use the conventional door locking handle assembly which employs the thin-type cylinder lock.
Also, in the conventional door locking handle assembly, the base body if fixed to the door by fitting screws into threaded holes formed on the door by way of through holes, which is formed on a front plate portion projection from the front end of the base body. Otherwise, the base body is fixed to the door by fitting screws into threaded holes of the base body from the rear side of the door by way of through holes of the door.
However, in such an attaching structure described above, it is necessary to form threaded holes and through holes on the door body adjacent to both longitudinal ends of the base body in addition to the attaching opening for receiving the base body. Therefore, it increases the processing of perforating such holes, and it makes the attaching operation troublesome or complicated because operators or workers have to hold the door handle assembly at a given attaching position form the front side of the door in conducting the screw fixing operation.
In a door handle assembly as shown in the Japanese utility model opening gazette No. Heisei 3-54274, a base body is provided with a cover plate on its front end portion, and a slant surface portion is formed on one of longitudinal ends of the base body, which slant surface portion is inclined relative to said cover plate. In attaching operation of the door handle assembly, a door is inserted between the cover plate and the slant surface portion, and then the door handle assembly is embedded into an attaching opening of the door so that the door is put between an engagement block and a slant surface portion, which is formed on the other of longitudinal ends of the base body. Also, in this attaching structure, the operation efficiency of attaching is not good because operators or workers have to hold the door handle assembly at a given attaching position from the front side of the door in conducting the screw fixing operation.
SUMMARY OF THE INVENTION
Under such circumstances, the present invention was made. Consequently, it is an object of the present invention to provide a door locking handle assembly with a built-in combination lock, which assembly is thin in thickness as a whole and capable of providing a very large number of available keys for the combination lock, wherein a large number of eligible persons or users of various instruments contained in a box or container provided with the door locking handle assembly are precisely controlled by a control operator through a computerized personal management system.
It is another object of the present invention to provide the door locking handle assembly, wherein it is not necessary to perforate threaded holes and through holes for attaching screws in the door, and the operation efficiency of attaching is more improved because operators or workers do not need to hold the door handle assembly at a given attaching position from the front side of the door in the screw fixing operation.
It is a further object of the present invention to provide the door locking handle assembly, which is adapted to various doors that are different from each other in thickness.
In accordance with a first aspect of the present invention, the above object of the present invention is accomplished by providing:
a base body fixedly mounted on a door
30
of a box, wherein a handle
2
is pivoted to the base body
1
so as to be capable of being pulled out forward and pushed back rearward relative to the base body
1
, wherein a locking member
3
serving as a door bolt for locking the door
30
to a main body of the box is directly or indirectly connected with the handle
2
so as to be engaged with and disengaged from a receiving portion of a stationary frame element such as the main body of the box when the handle
2
is pulled out forward and then turned sideward on the locking shaft
29
after completion of the pulling-out operation of the door handle
2
, the improvement wherein:
the combination lock
6
, which is provided with a plurality of marked dial discs
4
, is incorporated in the handle
2
and opened by turning each of the marked dial discs
4
a given number of times to establish a predetermined combination of marks for unlocking, which is provided in outer peripheral surfaces of the dial discs
4
;
the combination lock
6
is held in its locked condition when the predetermined combination of marks for unlocking is not established;
a plurality of slots
68
are formed on a bottom surface of a dent portion
100
, which is formed on a front surface of said handle
2
;
an outer peripheral portion of each of said dial discs
4
projects into said dent portion
100
through said slot
68
in such a manner that an outer peripheral surface of said dial disc
4
is set back from a virtual extension plane of the front surface
2
a
of said handle
2
;
a cylinder lock
13
is incorporated in the handle
2
and disposed adjacent to the combination lock
6
in a longitudinal direction of the handle
2
, whe
Gotou Kazuyuki
Segawa Shirou
Boswell Christopher
Knight Anthony
Smolowitz Martin
Takigen Manufacturing Co. Ltd.
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