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1. (CA2261965) METHOD FOR PRODUCING A STEERING-WHEEL COVER

Office : Canada
Application Number: 2261965 Application Date: 22.05.1998
Publication Number: 2261965 Publication Date: 26.11.1998
Publication Kind : A1
Prior PCT appl.: Application Number:EP1998003028 ; Publication Number: Click to see the data
IPC:
B62D 1/04
B29D 99/00
B29C 33/52
B29C 39/10
B29C 44/58
B29C 45/14
B29C 45/44
B PERFORMING OPERATIONS; TRANSPORTING
62
LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
D
MOTOR VEHICLES; TRAILERS
1
Steering controls, i.e. means for initiating a change of direction of the vehicle
02
vehicle-mounted
04
Hand wheels
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
D
PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
99
Subject matter not provided for in other groups of this subclass
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
C
SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
33
Moulds or cores; Details thereof or accessories therefor
44
with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
52
soluble or fusible
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
C
SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
39
Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
02
for making articles of definite length, i.e. discrete articles
10
incorporating preformed parts or layers, e.g. casting around inserts or for coating articles
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
C
SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
44
Shaping by internal pressure generated in the material, e.g. swelling, foaming
34
Component parts, details or accessories; Auxiliary operations
58
Moulds
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
C
SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
45
Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
14
incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
C
SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
45
Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
17
Component parts, details or accessories; Auxiliary operations
40
Removing or ejecting moulded articles
44
for undercut articles
CPC:
B60R 21/203
B29C 33/52
B29C 39/10
B29C 44/583
B29C 45/14
B29C 45/4457
B29L2031/3038
B29L2031/3047
B62D 1/04
Y10S 264/44
Y10T 29/49488
Y10T 74/20834
Applicants: TRW AUTOMOTIVE SAFETY SYSTEMS GMBH
Inventors: KREUZER, MARTIN
Priority Data: 197 21 789.3 24.05.1997 DE
Title: (EN) METHOD FOR PRODUCING A STEERING-WHEEL COVER
(FR) PROCEDE POUR MUNIR UN VOLANT DE DIRECTION D'UN ENROBAGE
Abstract: front page image
(EN) The invention relates to a method for producing a steering-wheel with a seamless cover encompassing the steering-wheel rim, steering-wheel spokes and the central area with tear lines for an airbag-covering. Said cover comprises a plastic shaped part produced as a single piece by a casting or injection process, with a closed surface and optionally a foamed base element. The inventive method is characterised in that a core consisting of a material with a low melting point is attached to the central base part of the steering-wheel skeleton. The steering-wheel skeleton and the core are then placed in a mould to produce the plastic shaped part. The plastic shaped part is formed. After said plastic shaped part has hardened, the core is melted by increasing the temperature and the material is removed from the plastic shaped part in liquid form.


Also published as:
MXPA/a/1999/000887KR1020000029480BRPI9804925EP0917512US6098286JP2001501889
WO/1998/052796