Shower head with impact protection plate

• US 5,730,362 A
• Filed: 12/29/1995
• Issued: 03/24/1998
• Est. Priority Date: 12/29/1994
• Status: Expired due to Fees

• Current Assignee: Hansa Metallwerke AG (Paasikivi Family)
• Original Assignee: Hansa Metallwerke AG (Paasikivi Family)
• Inventors: Cordes, Dieter
• Primary Examiner(s): Kashnikow, Andres
• Assistant Examiner(s): Douglas, Lisa Ann
• Application Number:
  US08/578,162
• Time in Patent Office: 816 Days
• Field of Search: 239/104, 239/106, 239/107, 239/109, 239/116, 239/117, 239/123, 239/548, 239/436, 239/552, 239/553, 239/555.3, 239/596, 239/602, 239/DIG. 12
• US Class Current: 239/123
• CPC Class Codes: B05B 1/185 characterised by their outlet element; Mounting arrangements therefor
• CPC Class Codes: B05B 15/528 by resilient deformation of the nozzle

Abstract

The shower base (1) of a shower head consists of a rigid perforated plate (1a), which has a number of holes (4, 5). Set into each of the holes (4, 5) in the perforated plate (1a) is a hose-type jet insert (6, 8) made of a flexible material which, owing to its material properties, can be flexed automatically to dislodge limescale deposits. The outer surface of the rigid perforated plate (1a), i.e. the surface of the shower base (1) which is visible to the user from underneath, is essentially completely covered by an impact resistant plate (1b) which is also made of a soft, flexible material. Of course the impact protection plate (1b) has collar-shaped lugs (12) going through it which are preformed on the perforated plate (1a) and which surround at least those hose-type jet inserts (8) which produce the high-power jets owing to their relatively narrow jet channel (9). The collar-shaped lugs (12), which are made of a rigid material, limit the volume of the jet insert (8), which, when flexed, contributes to the elastic deformation to a specific value, which would not be the case if the jet inserts (8) in question were preformed in one piece on the impact protection plate (1b). The latter configuration is, however, possible for those hose-type jet inserts (6), which produce the soft jets owing to their relatively wide jet channel (7).

Claims

1. Shower head comprising:

a) an essentially bell-shaped housing, in which at least one water chamber is formed which can be connected to a water supply channel;

b) a shower base, which seals a bottom of the bell-shaped housing and comprises;

ba) a perforated plate made of a rigid material, which has a number of holes;

bb) a number of hose-type jet inserts, which are made of a relatively soft, flexible material, each of which has a jet channel going through them terminating in a water outlet opening and each of which passes through a hole in the perforated plate, wherein;

c) essentially the entire outer surface of the perforated plate (1a) is covered by an impact protection plate (1b) made of a relatively soft, flexible material, in which, however,

d) there are, preformed on to the rigid perforated plate (1a), a number of collar-shaped lugs (12) which go around the outer area of at least some of the hose type-jet inserts (6,

     8) and separate these from the impact protection plate (1b).

2. Shower head according to claim 1 with a first set of hose-type jet inserts, each of which have a relatively wide jet channel and produce soft jets which have a relatively slow speed and a large cross-section, and with a second set of hose-type jet inserts, each of which has a relatively narrow jet channel and produce relatively high-speed hard jets with a small cross-section,

characterised in that

the collar-shaped lugs (12) on the perforated plate (1a) are only fitted to those hose-type jet inserts (8) which produce the hard jets, whilst the hose-type jet inserts (6) which produce the soft jets are preformed in one piece on the impact protection plate (1b).

3. Shower head according to claim 1, characterised in that the hose-type jet inserts (6) which produce the soft jets and the hose-type jet inserts which produce the hard jets have a different axial length.

4. Shower head according to claim 1, characterised in that the hose-type jet inserts (6, 8) and the impact protection plate (1b) are made of the same material.

5. Shower head according to claim 1, characterised in that the hose-type jet inserts (6, 8) and the impact protection plate (1b) are injection moulded on to the perforated plate 1a using the two-component technique.

6. Shower head according to claim 1, characterised in that the hose-type jet inserts and/or the impact protection plate are attached to the perforated plate in such a way that allows them to be removed.

7. Shower head according to claim 6, characterised in that the hose-type jet inserts and/or the impact protection plate are flexibly mounted on the perforated plate.