Stock material or miscellaneous articles – Structurally defined web or sheet – Including sheet or component perpendicular to plane of web...
Reexamination Certificate
1994-05-02
2001-07-17
Ahmad, Nasser (Department: 1772)
Stock material or miscellaneous articles
Structurally defined web or sheet
Including sheet or component perpendicular to plane of web...
C425S468000, C425S577000, C428S120000, C428S131000, C428S137000, C428S163000, C428S167000, C428S213000, C428S220000
Reexamination Certificate
active
06261662
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a molded element and more particularly to a molded element containing a horizontally disposed bore therein.
2. Description of the Prior Art
In the manufacture of molded articles, such as articles molded of plastic, cast metal, or the like, it is often the case that the article of manufacture is intended to be attached to or have attached thereto a second article. When the second article is to be joined above or below the molded article, and the mold segments are opened in a direction parallel to the desired bore (that is in an up-down direction), the molding process is uncomplicated. It is only necessary to provide a core in the location where the bore is needed and normal operation of the mold is sufficient to produce the desired result.
When, however, the article of manufacture is intended to attach or be attached to a second article alongside it and the bore has to be perpendicular to the direction of opening of the mold segments, the process becomes more complicated. A bore can be cut into the article in a separate process after it is removed from the mold. This process obviously requires extra time and careful alignment and/or special equipment. In the alternative, the mold can be composed of more than two separate pieces so that different parts thereof can be removed in different directions. This requires extra expenditure both in mold construction and in mold operation. As another alternative, in order to obviate the necessity of the mold needing to open in a direction other than parallel to the movement of the machine platen, other mechanical movement is used in conjunction with the movement of the mold. This involves side actions, side coring, cams, pullers, collapsing cores, loose cores and the like. This too requires significant extra cost in mold construction and results in a longer molding cycle and, concomitantly, less throughput.
The instant invention provides a simple form of bore appropriate for use with pins, screws and the like, that can be created using a mold that opens completely in the direction perpendicular to the machine paten and without other mechanical motion being required.
SUMMARY OF THE INVENTION
It is therefore a primary object of the present invention to provide a molded element containing a horizontally disposed bore.
It is a further object of the present invention to provide a molded element containing a horizontally disposed bore that can be produced using a mold that opens exclusively in directions perpendicular to the machine paten.
It is still a further object of the present invention to provide a molded element containing a horizontally disposed bore that can be produced without mechanical motion other than that of the mold segments in the direction of the movement of the machine paten being required.
It is yet a further object of the present invention to provide a molded element containing a horizontally disposed bore where the bore is delineated by alternating upwardly and downwardly disposed elements.
These and other objects of the present invention are attained by, in a molded element containing therein a horizontally disposed bore, the improvement comprising: a plurality of downwardly disposed first elements having distal ends, and being spaced apart from one another, and a plurality of upwardly disposed second elements having distal ends and being spaced apart from one another, wherein the plurality of first elements are offset from the plurality of second elements, whereby a horizontally disposed bore is formed by the distal ends of the plurality of first elements and the distal ends of the plurality of second elements.
According to one aspect of this invention, a molded element containing therein a horizontally disposed bore, has a plurality of downwardly disposed first elements spaced apart from one another and a plurality of upwardly disposed second elements spaced apart from one another. The plurality of first elements are offset from the plurality of second elements whereby a horizontally disposed bore is formed by the distal ends of the plurality of first elements and the distal ends of the plurality of second elements.
According to another aspect of this invention, the plurality of first elements and the plurality of second elements are flattened and elongated in shape and located parallel to one another in spaced-apart planes.
In accordance with another aspect of this invention the distal ends of the plurality of first elements and the plurality of second elements are outwardly arcuate, delimiting a cylindrical bore.
In accordance with still another aspect of this invention the plurality of first elements each have a first width and are spaced apart by a first distance and the plurality of second elements each have a second width and are spaced apart by a second distance and the first width is less than the second distance and the second width is less than the first distance.
In yet another aspect of this invention the plurality of first elements each have a first width and are spaced apart by a first distance and the plurality of second elements each have a second width and are spaced apart by a second distance and the first width is substantially equal to the second distance and the second width is substantially equal to the first distance.
According to still another aspect of this invention the first width is substantially equal to the second width.
In accordance with another aspect of this invention there are two downwardly disposed elements and three upwardly disposed elements of the molded element.
In yet another aspect of this invention mold for producing a molded element containing therein a horizontally disposed bore, the improvement contains an upper portion containing a plurality of downwardly disposed elements, spaced apart in parallel planes and having arcuate distal ends, and a lower portion containing a plurality of upwardly disposed elements, spaced apart in parallel planes and having arcuate distal ends. The lower portion and the upper portion are aligned so that upon closing the mold, the upwardly disposed elements and the downwardly disposed elements are located in alternating planes, and the arcuate ends of the upwardly disposed elements and the arcuate ends of the downwardly disposed elements define the horizontally disposed bore.
REFERENCES:
patent: 4514356 (1985-04-01), Harrison
patent: 4729863 (1988-03-01), Muller
patent: 5122052 (1992-06-01), Trame
Ahmad Nasser
Carrier Corporation
LandOfFree
Molded element containing a horizontally disposed bore does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Molded element containing a horizontally disposed bore, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Molded element containing a horizontally disposed bore will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2466692