US PATENT SUBCLASS 425 / 151
WITH SAFETY FEATURE

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

151WITH SAFETY FEATURE {3}
152  DF  .~> Plural starting buttons or mold operating means dependent upon position of a machine element
153  DF  .~> Secondary means to prevent accidental motion, (e.g., mold closing, etc.) or means to relieve gaseous pressure
154  DF  .~> Means to alter operation due to presence of foreign matter or overload

DEFINITION

Classification: 425/151

(under the class definition) Apparatus including means adapted to stop, prevent, or modify the operation of a machine, or relieve a condition when an unguarded, abnormal or unsafe situation which would injure the operator or the machine occurs.

(1) Note. Designing to prevent undue wear, breakage, leakage, dirt accumulation, etc.., during normal operation, are not included herein but found in appropriate subclasses below. Safety valves are included herein, see especially subclass 153.

SEE OR SEARCH THIS CLASS, SUBCLASS:

135+, especially 136+ for means to completely stop operation of the machine in response to a means sensing an abnormal condition.

SEE OR SEARCH CLASS

164, Metal Founding,

152+, for safety control means in metal founding apparatus. 192, Clutches and Power-Stop Control,

129+, for a safety device (e.g.., hand protector, etc..) comprising a stop mechanism.