U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

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Class 254 - Implements or apparatus for applying pushing or pulling force

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374 Subclasses


Subclasses list

Definition

This class includes implements or apparatus for applying a pushing or pulling force directly to either (a) an object to be moved, or (b) a generally stationary object upon which pressure or tension is to be exerted. It comprises jacks (including lifting jacks, floor jacks, and analogous implements), extracting apparatus (including stump pullers and nail extractors), tensioning apparatus (including belt, carpet and wire stretchers), hoist trucks, and cable-type load hauling or hoisting apparatus. Also included in this class is the subcombination of a cable guide which (1) is a component of, or used in combination with, an implement or an apparatus of this class, and (2) is intended to guide a cable which is directly connected to either the object or an object-supporting or -engaging member.

This class does not include the power-applying elements of machines, such as pump or presses, nor the adjusting elements of articles such as tables and chairs. It may, however, include supports of general application not elsewhere classifiable when they comprise means for hoisting the load-carrying portion of the support.

Implements for performing compressing operations upon material, e.g., clamps and bundling devices, are excluded, also devices for merely grasping or engaging with something to be moved.

Lines with other classes and within this class

Pushing or pulling implements of the jack or crowbar type, including those having special engaging features which engage between spring elements only, will be classified in Class 254. Those implements which engage between a spring and other structure to move or guide the spring into assembled or disassembled position will be classified in Class 29, subclasses 700+.

Patents that disclose a general use and state the implement can be used on an engine valve spring whether they coact with other structure for assembly or disassembly will be grouped as an art collection in Class 29, subclasses 215+.

Patents to an implement for spreading elements of a leaf spring are classified in Class 81, subclass 3.7.

 
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