Movable or removable closures – Mounted for multidirectional or oblique movement – Swings on plural axes; e.g. – pivotal link arms
Patent
1992-02-18
1994-06-28
Cuomo, Peter M.
Movable or removable closures
Mounted for multidirectional or oblique movement
Swings on plural axes; e.g., pivotal link arms
49394, 16352, E05D 1528
Patent
active
053235681
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a swinging arm hold of the type set forth in greater detail in the preamble of patent claim 1.
Swinging arm holds provided with locks are already known, e.g. through SE B 380 863 and 441 201 as well as SE A 86050 02-8. A window frame can be swung open by means of such holds from a closed to a partially open position, in which a lock starts functioning and prevents the swinging movement from continuing to a larger opening angle. The purpose of the lock is principally to prevent children from falling out of a window. However, when cleaning windows, painting etc. it would be desirable to be able to open the window additionally or even swing the frame half a revolution, which is done by manually actuating the lock in such a way, that its locking element leaves its engagement position in relation to the hold, subsequent to which the frame can be swung, possibly in order to be locked anew in relation to the window case and the hold after having been swung half a revolution.
However, said already known holds are impaired by several shortcomings and inconveniences. Thus, the lock maybe is within too easy reach for children, who then are able to remove in a simple way the locking element from its locking position. The construction of the lock often does not allow any other more concealed position, and consequently such a lock and such a hold are entirely objectionable. Another risk maybe exists in the slow operation of the locking element or its tendency of being stuck in a clamp or friction position without starting its operation automatically. Also, the already known holds and locks are often comparatively complicated with a risk of functional disturbances because of this and with resulting production, assembly and mounting costs respectively, and it is probably necessary to produce the window frame and/or window case in a special way and subject them to supplementary treatments. A substantial risk of functional disturbances and also permanent damages may exist in the construction and the interaction of the swinging arm hold and the lock, the latter possibly being subjected to inappropriately large forces, e.g. lever arm forces, which may warp or permanently strongly wear down the locking element and particularly its vital parts. The locking element maybe is constructed in a wrong way ergonomicly seen, e.g. handicapped persons finding it difficult to actuate the lock and besides the lock, due to the way in which it is constructed, may require substantial opening forces. Finally, the already known locks are often completely inoperative, in case the window is brought into a position, which is not an absolutely vertical position. Also, it is not possible to turn the hold upside-down in such a way, that e.g. the upper part of a window frame will be swung out from the window case.
The object of the present invention principally is to, in all the above-mentioned respects, improve and develop the already known holds and locks, the described inconveniences and risks in this way being counteracted and being eliminated as far as possible. Another object of the invention is to in other respects develop the art in this field further and suggest a generally advantageous hold with a lock.
These objects are attained mainly by constructing, according to the present invention, a hold with a lock of the type described above.
Additional characterizing features and advantages of the invention are set forth in the following description, reference being made to the accompanying drawings, which show a few preferred embodiments, which however are not limiting. The drawings show in detail:
FIG. 1 a window case in section with a frame having a swinging arm hold and a lock according to the invention in an open position after a release of the lock;
FIG. 2 a corresponding view of a hold, slightly modified, in a partially open position without or before a release of the lock;
FIG. 3 a)-m) various lock means according to the invention in plan and lateral views;
FIG. 4 a)-d) partial views of a hold and a lock ac
REFERENCES:
patent: 3479766 (1969-11-01), Mecklin et al.
patent: 3721044 (1973-03-01), Kvasnes
patent: 3994095 (1976-11-01), Hare
patent: 4611432 (1986-09-01), Lund et al.
patent: 4620393 (1986-11-01), Stafset
patent: 4658474 (1987-04-01), Anderssen
Cuomo Peter M.
Redman Jerry
Teknoskand Invent AB
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