Patent US3782712A successfully refreshed from Google Patents.
Patent US3640661A successfully refreshed from Google Patents.
US3640661A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous-parison blow-molding apparatus
Assignee: Somerset Technologies Inc
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Filing: 1969-10-13
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Granted: 1972-02-08
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Expires: 1989-10-13
Abstract
Abstract Apparatus utilizing an extruder capable of moving in such a manner as to dispose a parison momentarily, selectively, and concurrently with a cutting operation, within each of a plurality of molding stations. Each station is occupied by a blow mold having halves which part and close during a cycle in which a section of the parison is received, severed, and blow molded therewithin. Essential to processing the parison is the movement of the extruder die along a sinuous path along which the die is rapidly withdrawn in a direction opposite to that of parison travel during and after severance of the parison section received in a mold.
Inventors
- 👤 Joseph Gasior
- 👤 Lloyd Kovacs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:20
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/28
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
290 words
Blow-molding apparatus comprising: an extruder having a die aligned for discharging a parison generally along an axis in fixed relation with the extruder; a plurality of molds comprising partible halves associated with mold support means therefor and spaced along a stationary path along which each mold opens and closes with respect to a generally central parting axis in transverse, substantially fixed relation with said path said halves arranged on said mold support means to separate in opposite directions away from said path; clamping means for opening and closing said halves; mount means for supporting and moving said extruder with said parison axis moving along said path while aligned in transverse relation therewith; said mount means including guide means arranged for controlling the movement of the extruder so as to pass said parison axis into and out of substantially coaxial relation with each parting axis; said mount means including means for reciprocating the extruder lengthwise of said parison axis in timed relation with movements of the extruder corresponding with passage of the parison axis from one parting axis to the next one along said path and travel of said die in sinuous motion from parting axis to parting axis, said reciprocating means being constructed and arranged to dispose said die at a predetermined minimum distance from said molds as the parison axis passes into and out of registry with a parting axis; and means disposed between each of said molds and said die when disposed relatively thereto at said minimum distance for severing a parison section disposed in the mold from a parison issuing from said die at an instant wherein said extruder is positioned to dispose said parison axis in substantial registry with the respective one of said parting axes.
Claim 2
Dependent Claim
290 words
Blow-molding apparatus comprising: an extruder having a die aligned for discharging a parison generally along an axis in fixed relation with the extruder; a plurality of molds comprising partible halves associated with mold support means therefor and spaced along a stationary path along which each mold opens and closes with respect to a generally central parting axis in transverse, substantially fixed relation with said path said halves arranged on said mold support means to separate in opposite directions away from said path; clamping means for opening and closing said halves; mount means for supporting and moving said extruder with said parison axis moving along said path while aligned in transverse relation therewith; said mount means including guide means arranged for controlling the movement of the extruder so as to pass said parison axis into and out of substantially coaxial relation with each parting axis; said mount means including means for reciprocating the extruder lengthwise of said parison axis in timed relation with movements of the extruder corresponding with passage of the parison axis from one parting axis to the next one along said path and travel of said die in sinuous motion from parting axis to parting axis, said reciprocating means being constructed and arranged to dispose said die at a predetermined minimum distance from said molds as the parison axis passes into and out of registry with a parting axis; and means disposed between each of said molds and said die when disposed relatively thereto at said minimum distance for severing a parison section disposed in the mold from a parison issuing from said die at an instant wherein said extruder is positioned to dispose said parison axis in substantial registry with the respective one of said parting axes.
Claim 3
Dependent Claim
22 words
The apparatus of claim 1 wherein: said reciprocating means comprises cam and cam-following means shared by the extruder and the mount means.
Claim 4
Dependent Claim
25 words
The apparatus of claim 2 wherein: portions of the cam and cam-follower means are disposed concentrically with, and on opposite sides of, said pivot axis.
Claim 5
Dependent Claim
57 words
The apparatus of claim 1 wherein: said path is arcuate; and said mount means and the extruder form a pivotal connection along a pivot axis extending transversely with respect to the length of the extruder, and said pivot axis is spaced relative to said die and said path to cause said parison axis to traverse said path.
Claim 6
Dependent Claim
49 words
The apparatus of claim 1 wherein: said path is arcuate; said mount means forms a pivotal, axially adjustable connection with the extruder along a generally vertical pivot axis, and said die faces downward to dispose said parison axis in corresponding downward alignment and in intersecting relation with said path.
Claim 7
Dependent Claim
57 words
The apparatus of claim 1 comprising: a blowtube for each mold; mounting means for each blowtube comprising a horizontally aligned reciprocator effecting retraction of the blowtube from the path of said die and another reciprocator aligned for movements generally parallel to the parison axis for engaging the tube with the mold when positioned along said parison axis.
Claim 8
Dependent Claim
72 words
The apparatus of claim 1 wherein: said path is arcuate between two horizontally spaced parting axes; said mount means and the extruder form a pivotal, axially adjustable connection along a generally vertical pivot aXis, and said die faces downward to dispose said parison axis in corresponding downward alignment and intersecting relation with said path; said clamping means comprises actuating mechanism disposed outside a region extending between and along the two parting axes.
Claim 9
Dependent Claim
180 words
The apparatus of claim 1 wherein: said path is arcuate and the extruder is aligned with its length extending in a horizontal direction; said mount means comprises a journal fixed to the extruder and bearing means in conforming relation with the journal fixed to a base portion of the mount means, said bearing providing rotatable and axial movement relative to the journal; said reciprocating means comprises engaged cam and cam-follower means attached at opposite sides of the journal to the extruder and a base portion of said mount means with relative movement of the cam-follower means and the cam means occurring in response to pivotal movement of the extruder relative to said base portion to change the axial position of the journal and the extruder relative to the base; said cam means being shaped to correlate pivotal and axial movements of the extruder carrying said die axially toward each mold from a neutral axially remoter position between adjacent parting axes as said extruder pivots in either direction to a position placing said parison axis into coincidence with a parting axis.
Claim 10
Dependent Claim
91 words
The apparatus of claim 1 wherein: said path is nonarcuate and extends in a plane containing two horizontally spaced parting axes; said mount means comprises a horizontally rectilinear track having upper curvate surfaces of sinuous contour conforming to a desired pattern of motion lengthwise of the track for said extruder and die, and said mount means further comprises a dolly in fixed connection with said extruder and in guide relation with said track surfaces, said dolly carrying said extruder along said path with its longitudinal axis disposed generally in said plane.
Claim 11
Dependent Claim
82 words
The apparatus of claim 1 wherein: said path extends along a plane containing two horizontally spaced parting axes; said mount means comprises a guide rail in parallel relation with the path, and a carriage mounted on the rail in guide relation therewith; said reciprocating means being attached to the carriage and to the extruder to support and align said extruder with its axis merged with the parison axis, said reciprocating means being aligned to reciprocate the extruder lengthwise of its own axis.
Claim 12
Dependent Claim
37 words
The apparatus of claim 10 wherein: said reciprocating means is a pair of fluid cylinders fixed to the carriage on opposite sides of the extruder with the longitudinal axes of the cylinders parallel with the extruder axis.
Claim 13
Dependent Claim
128 words
The apparatus of claim 1 wherein: said path extends within a generally perpendicular plane containing two horizontally spaced parting axes; said mount means comprises a base providing a bearing defining a generally horizontal pivot axis, and a carriage having a journal extending through said bearing; said reciprocating means is attached to said carriage and arranged therewith to support said extruder with its longitudinal axis merged with said parison axis and within said vertical plane, said horizontal pivot axis intersecting said extruder axis; and power lever means operably connected with said journal and said base to oscillate an assembly of said carriage, reciprocator, and extruder through an ambit bringing said parison axis into coincident relation with either of said parting axes at points therealong within either of said molds.
Claim 14
Dependent Claim
20 words
The apparatus of claim 12 wherein: the apparatus is arranged to cause said axes to intersect at a common point.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-07 | 1975-08-09 | 1976-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-07 | 1979-08-09 | 1980-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-07 | 1983-08-09 | 1984-02-08 | $7700.00 | Window Closed / Lapsed |