Patent US7154978B2 successfully refreshed from Google Patents.
US3749541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the production of blow molded plastic articles
Assignee: Individual
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Filing: 1971-07-27
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Granted: 1973-07-31
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Expires: 1991-07-27
Abstract
Abstract The transporting mechanism for the mold sections in a blow molding apparatus has horizontal tie rods which are rigidly connected with one mold section and reciprocably guide the other mold section. The tie rods are parallel to the barrel of the plasticizer which is mounted at a level above the transporting mechanism. A frame of the transporting mechanism guides a housing which reciprocably supports the tie rods and is confined to reciprocatory movements in parallelism with the tie rods. A double-acting hydraulic cylinder is connected with the other mold section and with the frame to move the other mold section relative to the tie rods as well as to move both mold sections from registry with the extruding head of the plasticizer to a blowing station or vice versa. A system of racks and pinions can move the tie rods and the housing relative to the other mold section in response to actuation of the double-acting cylinder.
Inventors
- 👤 J Mehnert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:31
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/28; B29C49/30; B29C49/32; B29C49/02; B29C49/04; B29C49/04102; B29C49/42; B29C49/56; B29C49/561; B29C49/48; B29C2049/4856; B29C2049/48615; B29C49/5601; B29C49/5602
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
163 words
In an apparatus for the production of hollow plastic articles by the blow molding method, a combination comprising an elongated plasticizing unit having extruder means for discharging blanks of plasticized synthetic plastic material in a predetermined plane which is at least substantially normal to the longitudinal direction of said unit; a blow mold having first and second mold sections; and transporting means for first moving said mold sections towards each other in the longitudinal direction of said unit from an open position in which said sections are located at the opposite sides of and are spaced from said predetermined plane so that said extruder means can discharge a blank into the space between said sections to a closed position in which said sections meet in said plane to confine the blank which was discharged into said space, and for thereupon moving said closed mold sections together with each other to transport the confined blank in said longitudinal direction into a second predetermined plane.
Claim 2
Dependent Claim
163 words
In an apparatus for the production of hollow plastic articles by the blow molding method, a combination comprising an elongated plasticizing unit having extruder means for discharging blanks of plasticized synthetic plastic material in a predetermined plane which is at least substantially normal to the longitudinal direction of said unit; a blow mold having first and second mold sections; and transporting means for first moving said mold sections towards each other in the longitudinal direction of said unit from an open position in which said sections are located at the opposite sides of and are spaced from said predetermined plane so that said extruder means can discharge a blank into the space between said sections to a closed position in which said sections meet in said plane to confine the blank which was discharged into said space, and for thereupon moving said closed mold sections together with each other to transport the confined blank in said longitudinal direction into a second predetermined plane.
Claim 3
Dependent Claim
22 words
A combination as defined in claim 1, wherein said transporting means is arranged to move said sections in a substantially horizontal plane.
Claim 4
Dependent Claim
44 words
A combination as defined in claim 1, wherein said transporting means comprises elongated guide means supporting said mold sections, at least one of said mold sections being movable lengthwise of said guide means and said guide means being movable lengthwise with said mold sections.
Claim 5
Dependent Claim
24 words
A combination as defined in claim 3, wherein said elongated guide means comprises at least one straight guide member for said one mold section.
Claim 6
Dependent Claim
18 words
A combination as defined in claim 3, wherein said guide means comprises at least two parallel tie rods.
Claim 7
Dependent Claim
55 words
A combination as defined in claim 5, wherein said guide means further comprises a first platen secured to said tie rods and supporting the other of said mold sections, said transporting means further comprising a second platen mounted on said tie rods for movement lengthwise of said guide means and supporting said one mold section.
Claim 8
Dependent Claim
49 words
A combination as defined in claim 3, wherein the other of said mold sections is secured to said guide means and said transporting means further comprises a reversible drive operative to move said one mold section back and forth relative to said guide means and said other mold section.
Claim 9
Dependent Claim
59 words
A combination as defined in claim 7, further comprising second drive means for moving said guide means and said other mold section toward said predetermined plane in response to operation of said reversible drive means to move said one mold section toward said predetermined plane to thus move said mold sections from said open to said closed positions thereof.
Claim 10
Dependent Claim
49 words
A combination as defined in claim 8, wherein said reversible drive means is further operative to move said mold sections simultaneously to thereby transport the confined blank from said predetermined plane into said second plane, said second drive means being inoperative during such simultaneous movement of said mold sections.
Claim 11
Dependent Claim
47 words
A combination as defined in claim 8, wherein one of said drive means is arranged to move the respective mold section at a speed which differs from the speed of the other mold section during movement of said mold sections between said open and closed positions thereof.
Claim 12
Dependent Claim
17 words
A combination as defined in claim 10, wherein said one drive means is said second drive means.
Claim 13
Dependent Claim
81 words
A combination as defined in claim 8, wherein said second drive means comprises a first toothed rack parallel with said guide means and arranged to share the movements of said one mold section, a second toothed rack parallel with said first rack and arranged to share the movements of said other mold section, a first pinion meshing with one of said racks and a second pinion coaxial and rigid with said one pinion and meshing with the other of said racks.
Claim 14
Dependent Claim
22 words
A combination as defined in claim 12, wherein the diameter of one of said pinions exceeds the diameter of the other pinion.
Claim 15
Dependent Claim
30 words
A combination as defined in claim 13, wherein said pinions are disposed between said racks so that when said pinions rotate, said racks are caused to move in opposite directions.
Claim 16
Dependent Claim
50 words
A combination as defined in claim 14, wherein said transporting means further comprises a frame having second elongated guide means parallel with said firsT-mentioned guide means, and a housing reciprocable along said second guide means and reciprocably supporting said first-mentioned guide means, said pinions being rotatably mounted in said housing.
Claim 17
Dependent Claim
35 words
A combination as defined in claim 15, wherein said transporting means further comprises a pair of spaced arresting means for arresting said housing in two predetermined end positions with reference to said second guide means.
Claim 18
Dependent Claim
56 words
A combination as defined in claim 16, wherein said first drive means comprises a double-acting cylinder member and a piston member having an elongated piston rod and being reciprocably received in said cylinder member, one of said members being secured to said one mold section and the other of said members being secured to said frame.
Claim 19
Dependent Claim
83 words
A combination as defined in claim 17, further comprising a first platen secured to said first-mentioned guide means and supporting said other mold section, a second platen reciprocably supported by said first-mentioned guide means and supporting said one mold section, a third platen reciprocably supported by said first-mentioned guide means, and distancing means coupling said third platen to said second platen, said one member being secured to said one mold section by way of said second and third platens and said distancing means.
Claim 20
Dependent Claim
43 words
A combination as defined in claim 3, wherein said transporting means comprises fluid-operated first drive means for moving said one section with and relative to said other section and mechanical second drive means for moving said other section relative to said one section.
Claim 21
Dependent Claim
167 words
In an apparatus for the production of hollow plastic articles by the blow molding method, a combination comprising a plasticizing unit having extruder means for discharging blanks of plasticized synthetic plastic material in a predetermined plane; a blow mold having first and second mold sections; guide means defining an elongated path for movement of said mold sections substantially at right angles to said plane; and transporting means for first moving said mold sections towards each other along said path from an open position in which said sections are located at the opposite sides of and are spaced from said plane so that said extruder can discharge a blank into the space between said sections to a closed position in which said sections meet in said plane and confine the blank which was dicharged into said space, and for thereafter moving said closed mold sections together with each other in the same direction to thereby transport the confined blank along said elongated path into a second predetermined plane.
Claim 22
Dependent Claim
167 words
In an apparatus for the production of hollow plastic articles by the blow molding method, a combination comprising a plasticizing unit having extruder means for discharging blanks of plasticized synthetic plastic material in a predetermined plane; a blow mold having first and second mold sections; guide means defining an elongated path for movement of said mold sections substantially at right angles to said plane; and transporting means for first moving said mold sections towards each other along said path from an open position in which said sections are located at the opposite sides of and are spaced from said plane so that said extruder can discharge a blank into the space between said sections to a closed position in which said sections meet in said plane and confine the blank which was dicharged into said space, and for thereafter moving said closed mold sections together with each other in the same direction to thereby transport the confined blank along said elongated path into a second predetermined plane.
Claim 23
Dependent Claim
42 words
Apparatus as defined in claim 20, wherein one of said mold sections is located between said transporting means and the other of said mold sections, as considered in the direction of movement of said mold sections with and relative to each other.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |