DE8910298U1 - Attachment sleeves for firework rockets - Google Patents

Description

ALBERT EGER GprifcH J&i £<?- iVhSP Winnenden

■ ■Itll ■· ·· ·· ··

25.August 1989 HLa/-

DESCRIPTION Page 1

Attachment sleeves for firework rockets

The invention relates to attachment sleeves as used in the manufacture of firework rockets

State of the art

Firework rockets have been known for many years. Commercially available firework rockets mainly consist of a casing with a propellant, an attachment casing containing the pyrotechnic effect material, and a wooden casing. The casings themselves are usually made of cardboard and are labeled. However, there are also casings - particularly attachment casings - made of plastic. Occasionally, attachment and propellant parts are found on a single plastic body.

(Labeled) top sleeves made of wrapping cardboard have a flange at the bottom end to which the driver sleeve is glued. A plastic pointed cap is currently pressed into the top end of the cylindrical body of the top sleeve. This pointed cap comes off when the firework rocket has reached its flight height after burning and releases the pyrotechnic effect material.

Criticism of the state of the art

After the firework rocket has burned out, the burnt-out casings and the pointed cap fall to the ground in an uncontrolled manner. While the casings made of paper material and the wooden stick rot over time, the plastic pointed caps remain in nature without rotting, which goes against increased environmental awareness. In addition, a series of work steps are necessary in the industrial production of the top casings until the pointed cap is applied to the "correct" side of the body of the top casing.

ALBERT BGUf^'^rnhU'^.0<i ^: ..Y7O57 Winnenden

■ &iacgr;&igr;&igr; n' ' &igr;&igr; ' ·· ·· "

Attachment sleeves for firework rockets Description

Ij solution

The objectives are achieved by the attachment sleeve being made "from one piece" using paper molding technology and by closing the attachment sleeve at the top, the plastic pointed cap is no longer necessary. It can be filled with pyrotechnic effect material from the flanged side (as a rule, attachment sleeves are already filled "from below" in the pyrotechnic industry). The pyrotechnic effect after burning occurs when the attachment sleeve separates from the driver sleeve and releases the effect material "downwards", which has been verified by appropriate tests. A preferred embodiment is characterized in claims 2 and 3.

In the drawing, the subject matter of the invention is shown in an embodiment in longitudinal section.

The attachment sleeve for firework rockets is therefore made exclusively of paper (wrapping cardboard and label). It can be manufactured in different sizes, among other things determined by the outer diameter of the driver sleeve and the volume of the pyrotechnic effect material.

Achievable benefits

- Reduced environmental impact by not using plastic tip caps on fireworks rockets, which do not rot or cannot be disposed of*.

- more efficient and therefore probably more cost-effective production of attachment sleeves for firework rockets.

Claims (3)

Il · I ALBERT EGEK !GjrnbW«!* .0©;.:;.·7&Ogr;57 Winnenden 25.August 1989 HLa/- protection claims 1. Attachment sleeves for firework rockets characterized, that the top sleeve is made of wrapping cardboard - usually labelled - and the cylindrical shape has a tapered, tight closure on one side (top) and a flanged edge on the other side (bottom). 2. Attachment sleeves according to claim 1 characterized, that the attachment sleeve consists exclusively of degradable paper material. 3. Attachment sleeves according to claims 1 and 2 characterized, that the attachment sleeve can be manufactured in different dimensions (diameters, lengths, wall thicknesses, flanges) and designs (e.g. labeled, unlabeled).