Apparatus and method for utilizing a flexible plunger

Details Apparatus and method for utilizing a flexible plunger Apparatus and method for utilizing a flexible plunger

2007-11-06

2007-11-06

Gupta, Yogendra N. (Department: 1722)

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

C425S419000, C425S444000

Reexamination Certificate

active

11193367

ABSTRACT:
One embodiment of the present invention includes an assembly for stripping a medium from a mold cavity. The assembly may include at least one stripper shoe, a head structure, and a flexible plunger connecting the head structure and the at least one stripper shoe. The flexible plunger may include cutouts or openings along the length of the plunger to induce increased flexibility. The flexible plunger may include a first bending stiffness at one end of the plunger and a second bending stiffness the opposite end of the plunger. The cutouts may be configured such that the second bending stiffness is substantially less than the first bending stiffness. By increasing the flexibility of the plungers, the usable life of the assembly may be prolonged while maintaining product quality.

REFERENCES:
patent: 805914 (1905-11-01), Horr
patent: 813592 (1906-02-01), Schou
patent: 3940229 (1976-02-01), Hutton
patent: 4407766 (1983-10-01), Haardt et al.
patent: 4545754 (1985-10-01), Scheidt et al.
patent: 5078940 (1992-01-01), Sayles
patent: 5217630 (1993-06-01), Sayles
patent: 5533885 (1996-07-01), Schlusselbauer
patent: 5879603 (1999-03-01), Sievert
patent: 6113379 (2000-09-01), LaCroix et al.
patent: 6138983 (2000-10-01), Sievert
patent: 6209848 (2001-04-01), Bolles et al.
patent: 6224815 (2001-05-01), LaCroix et al.
patent: 6280566 (2001-08-01), Naito et al.
patent: 6464199 (2002-10-01), Johnson
patent: 2003/0164574 (2003-09-01), Hammer et al.
patent: 2005/0116389 (2005-06-01), Hammer et al.
patent: 2001191314 (2001-07-01), None

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