Locks – Hasp
Reexamination Certificate
1999-03-03
2001-09-25
Gall, Lloyd A. (Department: 3627)
Locks
Hasp
C070S203000, C070S208000, C070S212000, C292S148000, C292S205000, C292S281000, C292S283000
Reexamination Certificate
active
06293130
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Technical Field
The invention is directed to a swivel lever actuator which can be secured by a padlock for the closure of switch cabinet doors or the like, with a trough or dish which is arranged on the outer surface of the door or the like and in which is arranged the driving device for the closure, such as a toothed-wheel drive, lever drive or lock shaft, wherein an actuating lever is articulated at the driving device so as to be swivelable out of the dish about an axis extending parallel to the outer surface of the door or the like, and with a projection mounted on the swivel lever actuator, wherein an eyelet is arranged at the free end of the projection in such a way that when the lever is swiveled into the dish a padlock inserted through the eyelet prevents the actuating lever from swiveling out (locking position).
2. Description of the Related Art
A swivel lever actuator of the type mentioned above which can be secured by a padlock is already known from page 2-105 of a catalog from DIRAK GmbH & Co. KG, Kaiserstr. 55-59, 58332 Schwelm. A disadvantage in this known arrangement is that the projection, which is fastened to the dish in this case, lies in the movement path of the user's hand holding the actuating lever after the actuating lever has been swiveled out, so that there is a risk that the useres hand could be injured by the projection.
FR 2583093 A1 discloses a lever closure which can be fixed in a determined position by means of a padlock. The projection used for locking is also provided in this reference and presents a risk of injury to the hand of the user.
EP 0 261 267 B1 discloses a rod closure for sheet-metal cabinet doors which works with a swivel lever actuator that can be secured in the swiveled in state by means of a cylinder lock. This reference does not provide for securing by means of a padlock.
WO 91/17334 discloses a swivel lever closure which can be locked by cylinder lock devices and which, similar to the above-mentioned closure according to EP 0 261 267 B1, can be mounted in a thin wall, such as a sheet-metal cabinet door, and is formed of a base plate having two projections which penetrate the door leaf. One projection serves for the connection of a rod drive or the like or to support a drive shaft or the articulating shaft for the swivel lever, but also serves at the same time to fasten one end of the base plate, while the other projection has a recess for receiving the cylinder lock device which holds the swivel lever in its swiveled in position and simultaneously serves to fasten the other end of the base plate. However, there are no devices for additionally securing the closure by a padlock.
OBJECT AND SUMMARY OF THE INVENTION
It is the primary object of the invention to further develop the arrangement mentioned above in such away that this risk of injury is eliminated and operation is facilitated.
A further disadvantage in the known arrangement consists in that when no padlock is inserted the swivel lever is prevented from swiveling out only when a cylinder lock or key-operated lock is additionally provided, which is not desirable in many cases. When there is no profile cylinder, there is a risk in the known arrangement that as a result of shaking movement to which the swivel lever closure may be subject, for example, during earthquakes or during operation or transport, the swivel lever will swivel out to the extent that the projection formed by the padlock will exit the area of the lever and enable the swivel lever to rotate with the lock shaft. This rotation results in the risk of unwanted opening of the cabinet door.
Shaking movements of the kind mentioned above occur in particular when the arrangement is provided on a crane installation where there are often a plurality of, e.g., as many as 30, switching installations which are enclosed by a switch cabinet that is secured by switch cabinet doors.
Therefore, a further object consists in making possible a construction in which the actuating lever, in its swiveled in position, is also prevented from swiveling out in an unwanted manner when a cylinder lock or the like is not provided and also when no padlock is inserted.
This object is met in that the projection is mounted at the actuating lever so as to be displaceable and/or rotatable and/or swivelable, in that the actuating lever has a second projection with an eyelet, and in that the eyelet of the first projection is situated close to and flush with the eyelet of the second projection in the locking position of the actuating lever.
As a result of these steps, the formerly troublesome projection swivels out with the hand lever, so that it no longer interferes with the user's hand when the closure is activated by means of the lever and the hand can no longer be injured. At the same time, it becomes possible to lock the hand lever in its swiveled in position automatically, wherein this locking can be canceled again in that the projection is, e.g., displaced, rotated or swiveled.
According to a further development of the invention, the first projection is displaceable parallel to the longitudinal axis of the actuating lever. For example, it can be displaced from a first position, in which its eyelet is aligned with the eyelet of the second, nondisplaceable projection, into a position which is offset approximately by the width of an eyelet.
REFERENCES:
patent: 688747 (1901-12-01), McMillen
patent: 1312931 (1919-08-01), Tenny et al.
patent: 2485012 (1949-10-01), Palmer et al.
patent: 3212804 (1965-10-01), Hickey
patent: 3500668 (1970-03-01), Henry
patent: 3674962 (1972-07-01), Kroeger
patent: 4134281 (1979-01-01), Pelcin
patent: 5257839 (1993-11-01), Nielsen et al.
patent: 5469725 (1995-11-01), Yamada
patent: 0261267 (1988-03-01), None
patent: 0450699 (1991-10-01), None
patent: 2583093 (1986-12-01), None
patent: 2276415 (1994-09-01), None
patent: WO91/17334 (1991-11-01), None
Gall Lloyd A.
Reed Smith LLP
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