US PATENT SUBCLASS 81 / 329
.~ With means (nontoggle) to hold jaws against only retrograde movement

Current as of: June, 1999
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81 /   HD   TOOLS

300  DF  TOOL JAW(S) POSITIONED BY RELATIVELY MOVABLE PLURAL HANDLES (E.G., PLIERS) {15}
329.~ With means (nontoggle) to hold jaws against only retrograde movement {4}
330  DF  .~.~> With plural preselective jaw positions
331  DF  .~.~> Manipulated lock member {5}
338  DF  .~.~> Rack and pawl means
339  DF  .~.~> Coacting friction means {1}

DEFINITION

Classification: 81/329

(under subclass 300) Tools including means to restrain the jaws against movement away from the work engaged, which means does not restrict movement of the jaws towards the work.

(1) Note. Included in this and indented subclasses are tools in which the jaws close to engage the work, which work alone limits further closing of the jaws, and the restraining means prevents the jaws from opening for so long as the operator

desires the locked jaw condition. For similar tools in which jaw closing is limited by means other than the work engaged, see this class, subclass 341.

(2) Note. This subclass and indented subclasses specifically exclude toggle-link means for locking the jaws on the work; see (3) Note below. This and indented subclasses do not exclude toggle-link means to actuate the jaws for movement together with other means for locking the jaws.

(3) Note. Since toggle linkages used for jaw actuation are inherently locked on the work by reason of the intermediate pivot passing through and beyond the straight line position of the links, all toggle actuated subclasses should be searched for this feature, including subclasses 363 and 367+.

(4) Note. See the definition of "TOGGLE" under subclass 300.

SEE OR SEARCH THIS CLASS, SUBCLASS: 319, and 320, for tools otherwise classified in this and indented subclasses, but provided with lock release means and lock disabling means respectively.

341, and see (1) Note above.

363, and 367+, and see (3) Note above.