US4114849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pivot mold assembly
Assignee: Individual
•
Filing: 1977-03-28
•
Granted: 1978-09-19
•
Expires: 1997-03-28
Abstract
Abstract The following specification describes a stop boss formed on the handle of a pair by means of a pair of slides located behind a skirt wall of the pail with the handle passing through a slot in the skirt wall, which is closed by a flange wall formed by the slides. The slides are movably carried in guides by a ring member and are received in a recess of another ring member which conventionally forms the annular pail wall. The guides enable the slides to move laterally toward each other in response to downward movement of the carrying ring member, to define the cavities for forming the stop boss and the flange wall closing the skirt wall slot. On completion of the mold cycle and upward movement of the ring member carrying the slides, the guides move the slides laterally apart to release the stop boss and the flange wall. The slides are then moved from between the skirt and pail walls to enable the pail to be released from the mold.
Inventors
- 👤 John W. Von Holdt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:36
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/14; B29C45/14778; B29C45/0017; B29C2045/0018
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
184 words
A mold assembly for forming a retaining portion on a freely rotatable pail handle extending through a passage formed in one wall of the retaining portion to a position intermediate said one wall and an annular wall of the pail, formed by a pair of ring members with said annular wall spaced from said one wall and integrally interconnected with said one wall by a pair of spaced side walls and a top wall at a plurality of positions spaced circumferentially of said handle, the improvement comprising: a pair of slide members extended between said one wall and said annular wall and into engaging relationship in response to axial movement in one direction of one of said ring members to define a mold cavity for forming said retaining portion on said rotatable handle; and means operatively associated with said slide members, for disengaging said slide members and for guiding said slide members axially of said annular wall to disengage said slide members from between said one wall and annular wall in response to axial movement of said one ring member in the opposite direction.
Claim 2
Dependent Claim
184 words
A mold assembly for forming a retaining portion on a freely rotatable pail handle extending through a passage formed in one wall of the retaining portion to a position intermediate said one wall and an annular wall of the pail, formed by a pair of ring members with said annular wall spaced from said one wall and integrally interconnected with said one wall by a pair of spaced side walls and a top wall at a plurality of positions spaced circumferentially of said handle, the improvement comprising: a pair of slide members extended between said one wall and said annular wall and into engaging relationship in response to axial movement in one direction of one of said ring members to define a mold cavity for forming said retaining portion on said rotatable handle; and means operatively associated with said slide members, for disengaging said slide members and for guiding said slide members axially of said annular wall to disengage said slide members from between said one wall and annular wall in response to axial movement of said one ring member in the opposite direction.
Claim 3
Dependent Claim
29 words
The assembly of claim 1 in which the other ring member has a recess for defining a surface of said one wall, spaced side walls, and said top wall.
Claim 4
Dependent Claim
37 words
The assembly of claim 2 in which said means includes guided means on said one ring member and guide means on said slides for guiding said slides transverse to the axial movement of said one ring member.
Claim 5
Dependent Claim
44 words
The assembly of claim 3 having means in said other ring member recess for engaging said slides to enable said slides to move, in response to said one ring member moving in said one axial direction, in said guide means relative to each other.
Claim 6
Dependent Claim
27 words
The assembly of claim 4 having means in said slides for forming a flange wall mold cavity in communication with said annular wall and said one wall.
Claim 7
Dependent Claim
16 words
The assembly of claim 5 having means on said one ring member for forming said passage.
Claim 8
Dependent Claim
36 words
In the assembly of claim 6, means on said other ring member and on said one ring member forming a mold cavity in said passage for forming a portion of said handle extending through said passage.
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) | 1981-09-18 | 1982-03-20 | 1982-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-18 | 1986-03-20 | 1986-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-18 | 1990-03-20 | 1990-09-19 | $7700.00 | Window Closed / Lapsed |