Mold assembly for forming a wax pattern in the shape of a...

Details Mold assembly for forming a wax pattern in the shape of a... Mold assembly for forming a wax pattern in the shape of a...

2003-01-03

2004-10-19

Mackey, James P. (Department: 1722)

Plastic article or earthenware shaping or treating: apparatus

Core and positioning means therefor

C425SDIG001, C249S177000

Reexamination Certificate

active

06805547

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a mold assembly for forming a wax pattern in the shape of a golf club head and, more particularly, to such a mold assembly in which a tunnel defined in outer molds of the mold assembly makes such a compensatory angle with horizontal surfaces of the outer molds that the wax pattern may have an opening delimited by a peripheral wall perpendicular to an inclined front face of the wax pattern.
2. Description of Related Art
A known mold assembly for forming a wax pattern in the shape of a golf club head is illustrated in
FIGS. 1
to
3
. The mold assembly includes a pair of outer molds
11
and
12
releasably coupled together to define a cavity
111
and
121
and a tunnel
112
and
122
therein, with a plurality of mold cores
21
and
22
received in the cavity
111
and
121
and a supporting member
30
received in the tunnel
112
and
122
to hold the mold cores
21
and
22
in the cavity
111
and
121
. As soon as melted wax poured into the cavity
111
and
121
becomes cool, a wax pattern
40
in the shaped of a golf club head can be obtained for manufacturing a sequent golf club head afterwards.
In this conventional mold assembly, both the tunnel
112
and
122
and a parting plane
23
between the mold cores
21
and
22
are designed to be parallel to horizontal surfaces of the outer molds
11
and
12
, so as to allow the mold cores
21
and
22
and the supporting member
30
to be pull out from the resulting wax pattern
40
.
However, the wax pattern
40
has an opening
41
formed in an inclined front face which actually makes an acute angle &thgr; with vertical surfaces of the outer molds
11
and
12
. The horizontally support member
30
can not provide the opening
41
with a peripheral wall perpendicular to the inclined front face but, instead, with a peripheral wall oblique to the inclined front face.
Being the same as the wax pattern
40
, any sequent golf club head obtained from the pattern
40
will have an opening
41
delimited by a peripheral wall oblique to the inclined front face of the pattern
40
. As a necessary striking plate is placed on such a golf club head within the opening
41
during a subsequent welding procedure, a broad gap appears and leads to a less acceptable welding result, particularly when the procedure is performed with a high-energy weld, such as laser welding, plasma arc welding and the like.
OBJECTS OF THE INVENTION
The object of the present invention is to provide a mold assembly in which a tunnel defined in outer molds of the mold assembly makes such a compensatory angle with horizontal surfaces of the outer molds that a resulting wax pattern may have an opening delimited by a peripheral wall perpendicular to a front face of the wax pattern, so as to improve wedding quality for any sequent golf club head obtained from the wax pattern.
SUMMARY OF THE INVENTION
To achieve the aforementioned objects, the present invention provides a mold assembly comprising a plurality of outer molds coupled together to defined a cavity and a tunnel therein, with a plurality of mold cores received in the cavity and a supporting member received in the tunnel, in order to form a wax pattern that has an opening formed in a front face thereof. Furthermore, both the tunnel and a parting plane between the mold cores make such a compensatory angle with horizontal surfaces of the outer molds that a resulting wax pattern may have an opening delimited by a peripheral wall perpendicular to the front face of the wax pattern.
Other objects, advantages and novel features of this invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.


REFERENCES:
patent: 4842243 (1989-06-01), Butler
patent: 5417559 (1995-05-01), Schmidt
patent: 5429365 (1995-07-01), McKeighen
patent: 5651409 (1997-07-01), Sheehan
patent: 5908643 (1999-06-01), Yost et al.
patent: 6406654 (2002-06-01), Perez et al.

Affiliated with

Also associated with

Rating

Mold assembly for forming a wax pattern in the shape of a... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Mold assembly for forming a wax pattern in the shape of a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mold assembly for forming a wax pattern in the shape of a... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3326031