Machine element or mechanism – Elements – Guard mechanisms
Reexamination Certificate
1999-09-29
2001-07-17
Marmor, Charles A. (Department: 3682)
Machine element or mechanism
Elements
Guard mechanisms
C160S202000, C409S134000
Reexamination Certificate
active
06260438
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a mobile protective cover for a zone of a machine with moving parts.
The present cover is, in particular, attached to a machining part or tool on the machine, which is mobile along a respective operating path, preferably extending in accordance with at least two reference co-ordinates and, in particular, extending in a single plane.
The present cover allows protection of the machine machining part or tool mobile support and drive parts which extend behind the machining part.
Machining parts usually have protective covers that move along substantially planar trajectories and that are designed to prevent contact between the machine moving parts and chippings, powders or other damaging external agents, as well as preventing the leakage of lubricating oils from the moving parts which may dirty the workpiece, and obviously preventing injury to the operator.
Said known mobile protective covers normally consist of a plurality of flat cover plates, positioned relative to one another and connected to the machine machining part, which projects from a central opening in the cover means, in such a way that they follow the machining part during its machining movements, keeping the machine moving parts covered.
The flat cover plates or elements of this known individual plurality have a disadvantage relative to the fact that they are not able to cover extensive openings or machining zones and do not allow extensive movements by the moving part or tool.
Covers are also known which extend or move in a linear fashion in a single straight direction, covering large openings and allowing extensive travel by the mobile machining part or tool. However, such linear covers are completely unsuitable for machining parts which move along trajectories other than a straight trajectory, in particular along planar trajectories.
SUMMARY OF THE INVENTION
The present invention provides a protective cover for a machine zone with moving parts with the characteristics described in claim
1
. In particular, a protective cover is provided for a machine zone with moving parts, in which the machine comprises a machining part which is mobile along a respective operating path, preferably extending in a single plane, and in which the machine moving parts to be protected are behind the mobile part. The protective cover comprises cover means connected to the machine machining part in such a way that they follow the machining part operating movements, keeping the machine moving parts covered; wherein the cover means comprise, in combination, at least first cover means in the form of a first set of cover elements connected to the machining part in such a way that they can move along a defined trajectory, extending relative to one another so that they cover the zone and overlapping, and second cover means in the form of a second set of cover elements connected to the machining part in such a way that they can move, extending relative to one another so that they cover the zone and overlapping, along a trajectory different to the trajectory of the cover elements in the first set, so that as the machining part moves along its operating path, it moves the first and second cover means along the respective trajectories, ensuring that the zone to be covered remains covered.
By dividing the movement, in particular on the plane, transmitted by the moving part to the protective cover between the first and second mobile cover means on different trajectories, with the first and second cover means co-operating during the movement to ensure that the zone with the machine moving parts to be covered remains covered, advantage can be taken of the extensive travel and significant openings which can be covered by each cover means along its respective movement trajectory, providing a total cover which can be applied on very large openings or machining zones to be covered, thus allowing extensive operating movements of the moving part or tool.
The secondary claims refer to preferred and advantageous embodiments of the present invention.
REFERENCES:
patent: 3570578 (1971-03-01), Loos
patent: 4773457 (1988-09-01), Bierbrauer et al.
patent: 5482414 (1996-01-01), Hayashi et al.
patent: 5560415 (1996-10-01), Geissler
patent: 5704884 (1998-01-01), Uemura et al.
patent: 6089800 (2000-07-01), Tabellini
patent: 9-225777 (1997-09-01), None
patent: 11-197986 (1999-07-01), None
Fay Sharpe Fagan Minnich & McKee LLP
Marmor Charles A.
P.E.I. Protezioni Elaborazioni Industriali S.R.L.
Parekh Ankur
LandOfFree
Protective cover which can be attached to a machining part... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Protective cover which can be attached to a machining part..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Protective cover which can be attached to a machining part... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2564400