US PATENT SUBCLASS 425 / 135
CONTROL MEANS RESPONSIVE TO OR ACTUATED BY MEANS SENSING OR DETECTING A CONDITION OR MATERIAL TRIGGERED

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

135CONTROL MEANS RESPONSIVE TO OR ACTUATED BY MEANS SENSING OR DETECTING A CONDITION OR MATERIAL TRIGGERED {8}
136  DF  .~> Means responsive to abnormal condition completely stop operation of machine {2}
139  DF  .~> Article ejector or stripper control
140  DF  .~> Control means responsive to product weight or dimension {1}
142  DF  .~> Cutter control
143  DF  .~> Temperature control {1}
145  DF  .~> Feed control of material en route to shaping area {3}
149  DF  .~> Molding pressure control means responsive to pressure at shaping area (e.g., injection or press mold, etc.)
150  DF  .~> Mold motion or position control

DEFINITION

Classification: 425/135

(under the class definition) Apparatus comprising (1) means to sense a condition which may or may not occur, a change in such condition, a lack of such condition, or a result of such condition, and a separate control means for an apparatus part, the sensing means causing or permitting operation of the separate control means without the intervention of a human attendant, or (2) means to control, actuate or initiate an element of the apparatus in proper relationship to the presentation of shaping surfaces or material to shaped.

(1) Note. Control means which merely insure continuous or synchronous operation of a machine or part thereof without detecting a variable relationship are not here but are provided for in appropriate subclasses below on other features.

(2) Note. Spring mounted or biased molding or pressing elements which yield after a given amount of force is applied are not considered to be control means for this subclass and are classified in appropriate subclasses below; see especially subclasses 151+ and 406+. Valves which are spring biased and designed to regulate flow of molding material by yielding to pressure are included herein, see especially subclasses 145+. Spring biased valves as part of a hydraulic system for operating a mold system are not here unless part of a control system responsive to a sensing or detecting means.

(3) Note. To be included under (2) of the definition it is necessary that the molds or work pieces be presented in a purely random manner and not spaced or positioned according to a law of the machine.

SEE OR SEARCH THIS CLASS, SUBCLASS:

29, for reshaping, resizing or vulcanizing means for tires, tire-tubes or belts in combination with control means responsive to means sensing a condition. 151+, for safety features, e.g.., pop off valves, spring release mechanisms, etc..

155+, for control means responsive to an independently operated timer.

162+, for electrical control systems.

SEE OR SEARCH CLASS

73, Measuring and Testing, appropriate subclasses for sensing means, per se, or such means combined with measuring or testing means; see the collection of search notes in that class definition.

164, Metal Founding,

154.1+, for metal founding apparatus including control means responsive to or actuated by means sensing a condition or variable.

364, Electrical Computers and Data Processing Systems,

130+, for data processing control systems wherein the control system is claimed generically, and subclasses 475.02+ and 476.01 for the application of a computer in the manufacturing of a product which includes molding or pressing.