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1. WO2020114529 - POMPE À MAIN

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

Patent claims

1. A hand operated pump of a fuel system for internal combustion engines comprising an outer casing (1) and mounted within its cavity (4) a slidably disposed piston (2), characterised by that between the outer casing (1) and the piston (2) is mounted at least one locking ring (6) which is fixed in the outer casing (1), with the outer casing (1), the piston (2) and the locking ring (6) being made of the same type of plastic, while between the outer casing (1) and the piston (2) there is at least one sealing cuff (5) which is fixed in the piston (2) and is made of fluorine silicone.

2. The hand operated pump according to claim 1, characterised by that the outer casing (1), the piston (2) and the locking ring (6) are made of polyamide.

3. The hand operated pump according to claim 1 , characterised by that the outer casing (1) and the piston (2) are made of transparent plastic.

4. The hand operated pump according to one of the preceding claims, characterised by that the piston (2) is secured against movement by threading (3) arranged in the cavity (4) of the outer casing (2).

5. The hand operated pump according to any one of the preceding claims, characterised by that in the head (7) of the piston (2) a bearing ring (8) is mounted and rests on the front (7) of the outer casing (1),with the bearing ring (8) being rubber.

6. The hand operated pump according to claim 5, characterised by that the ring (8) is made of fluorine silicone.

7. The hand operated pump according to claim 1 , characterised by that the outer casing (1) is made of plastic containing blue pigment and the piston (2) is made of plastic containing orange pigment.