US PATENT SUBCLASS 425 / 436 R
SHAPING SURFACE INCLUDING MEANS TO RELEASE OR REMOVE PRODUCT FROM SHAPING SURFACE

Current as of: June, 1999
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425 /   HD   PLASTIC ARTICLE OR EARTHENWARE SHAPING OR TREATING: APPARATUS

436 RSHAPING SURFACE INCLUDING MEANS TO RELEASE OR REMOVE PRODUCT FROM SHAPING SURFACE {7}
437  DF  .~> By differential gas pressure ejecting means
438  DF  .~> By means releasing article from interiorly placed shaping surface
439  DF  .~> By means inverting mold
440  DF  .~> By means flexing or deforming the mold
441  DF  .~> By movable mold sections {2}
444  DF  .~> By movable ejector means entering mold cavity
436 RM  DF  .~> Removal-Miscellaneous

Unofficial Alpha Subclasses: R RM

DEFINITION

Classification: 425/436

(under the class definition) Apparatus comprising shaping members which are equipped with distinct means, other than those for associating or separating parts making up the shaping means, to remove or facilitate removing the product from the shaping surface.

(1) Note. Means for retracting or withdrawing a mold surface from the molded material (e.g.., segmented molds or

cores) are not included herein but are classified on some other basis. Means moving a mold bottom to force the product out of a mold is considered a form of ejecting and not merely separating of mold parts and is included herein.

SEE OR SEARCH THIS CLASS, SUBCLASS:

38, for means for removing a product from a toroidal female mold.

139, for automatic control of an ejector or stripper.

165, for an electrical control system of a product removal means. 176, product removal means in a combination comprising mold forming means.

223, for an endless surface type shaping surface and associated means to harvest a preform therefrom.

282+, for a product release means in a shaping means of the ice-cream scoop or plugger type.

346+, for a machine comprising sets of male-female press molds including positive means to eject a product, see especially subclasses 350 and 351.

363+, for an endless surface type press couple which may include means to strip or eject a product from the surface.

422, for a male-female press couple including positive means to remove or eject a product.

SEE OR SEARCH CLASS

65, Glass Manufacturing, appropriate subclasses for ejection means combined with glass forming means, especially

305+, for a press molding machine including an ejector.

72, Metal Deforming,

426+, for product handling means in metal deforming apparatus.

162, Paper Making and Fiber Liberation, 410, for article ejecting means in a foraminous pulp molding mold.

164, Metal Founding,

213+, for a stripping or ejecting means for separating a forming surface from a shaping means in an apparatus for making a forming surface; subclasses 344+ for ejection means in a means to shape metallic material; and subclasses 401+

for a stripper or ejector peculiar to metal founding.

249, Static Molds,

66.1, for ejector means in a static mold.

264, Plastic and Nonmetallic Article Shaping or Treating: Processes,

334+, for a process of ejecting or stripping in a plastic article shaping process.