US PATENT SUBCLASS 188 / 82.1
.~ One-way brakes

Current as of: June, 1999
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188 /   HD   BRAKES

*  DD  WHEEL {10}
82.1.~ One-way brakes {8}
82.2  DF  .~.~> Reversible
82.3  DF  .~.~> With disabler {1}
82.4  DF  .~.~> With hold out
82.5  DF  .~.~> Combined or plural diverse types
82.6  DF  .~.~> Biased flexible band
82.7  DF  .~.~> Pivoting or flexing detent (e.g., pawl) {2}
82.8  DF  .~.~> Dragged wedging member {1}
82.9  DF  .~.~> Axially moving

DEFINITION

Classification: 188/82.1

Brakes applied to element rotating relative to stationary elements to prevent retrograde rotation while allowing forward rotation.

(1) Note. These devices are often known as "automatic" or "safety" brakes. They may be considered "automatic" in the sense that their basic structure is such that they necessarily react to apply braking force on rotation in one direction.

(2) Note. The rotating element may be included by name as "hoisting drum", "wheel", etc.

(3) Note. For machines to which the one-way brake is applied, see the appropriate art class. See (2) Note above.

SEE OR SEARCH THIS CLASS, SUBCLASS:

30, for one-way brakes applied to the wheels of a nonrailway vehicle to prevent retrograde movement.

61, for one-way brakes for railway vehicles to prevent retrograde movement.

67, for one-way brakes for reciprocating rod-like members.

290+, for a fluid-resistance one-way brake. SEE OR SEARCH CLASS

74, Machine Element or Mechanism,

111+, for mechanisms provided with parts adapted to impart step by step motion to a unidirectionally driven member, particularly subclasses 144+, for grip units and features, and subclasses 575+, for the structural detail of a pawl or ratchet.

160, Flexible or Portable Closure, Partition, or Panel,

291+, for flexible closures in which the material is accumulated in the form of a roll and which have means retarding or stopping the rotation of the roll or for holding

the roll to prevent undesired rotation.

192, Clutches and Power-Stop Control,

223+, for devices for the joint control of power transmission and brake in which the application of the brake is automatic in that it requires no separate control operation, subclasses 41+, for clutches which engage in one direction of rotation without manipulating, subclass 51, for multiple associated clutches instrumental in accomplishing the reversal of rotation, and subclasses 116.5+, for stop mechanisms.

242, Winding, Tensioning, or Guiding,

298+, 382+, 385+, 396.2+, and 410 for a one-way positive brake in a reel or similar environment.

254, Implements or Apparatus for Applying Pushing or Pulling Force,

266+, for apparatus for hauling or hoisting a load, the apparatus including a driven drum which pulls on or travels along a cable where no more structure is included than relates to the brake device, classification is in Class 188, Brakes. 477, Interrelated Power Delivery Controls, Including Engine Control, for interrelated control between an engine and a transmission, clutch, or brake.