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Class 30/268 - Spring tension


Subclass of Class 30 - Cutlery
Definition: Joints in which the proper pressure is applied to the blades
No. of patents: 15
Last issue date: 11/06/2007


NumberTitleIssue Date
7290339Cutting apparatus for easily opening plastic packaging
A cutting apparatus for easily opening plastic packaging comprises: first support member 100, second support member 200, first shaft 400, second shaft 401, third shaft 402, first cutting wheel 300, second cutting wheel 30...
11/06/2007
7168168Knife protection device used in cutting device
A knife protection device used in a cutting device; the cutting device has a tool body; the tool body having a cutting section and a handle; the cutting section having at least one cutting portion. The knife protection device comprises a protection unit installed on...
01/30/2007
7165330Pivotal device for scissors
A pair of scissors includes two scissor elements and a pivotal device. Each scissor element includes a countersink extending from a first side thereof through a second side thereof. The pivotal device includes a screw and a nut. The screw includes a threaded shank a...
01/23/2007
6971178Replaceable blade knife
A utility knife includes a handle assembly comprising first and second handle portions pivotally movable between open and closed positions. A blade carriage within the assembly carries a blade. When the handle portions are in the open position the blade carriage is ...
12/06/2005
6966115Pruning scissors
Pruning scissors comprise a blade and a counter-blade each integral with a grip and mounted so as to be pivoted around a threaded swivel pin cooperating with an adjusting nut of the blade and counter-blade. The nut is rotationally integral with a toothed wheel meshe...
11/22/2005
6904685Pivotal device for scissors
A pair of scissors includes two scissor elements and a pivotal device. Each scissor element includes a countersink extending from a first side thereof through a second side thereof. The pivotal device includes a screw and a nut. The screw includes a threaded shank a...
06/14/2005
5498095Press fitted flexural pivot joint
A flexural pivot joint includes two pivoting members, which may be levers of a pivotal hand tool, and two substantially identical flexible blade elements, each substantially Z-shaped and having opposite ends respectively connected to the pivoting members....
03/12/1996
5367774Resilient lock for a hand tool
The present invention relates to tools such as scissors, shears, pruners, and the like, which are resiliently biased to an open position, and which have a locking mechanism to keep these tools in a closed configuration. More particularly, this invention i...
11/29/1994
4807364Medical scissors
Disposable scissors for medical use comprising two plastic handles, two shaped stainless steel blades disposed between the handles and in contact with each other, pivot means coupling the handles and the blades, characterized in that the part of each hand...
02/28/1989
4598477Cutting device
A cutting device comprising first and second members each comprising a blade at one end and a handle at the other end, a pin on which the first and second members are pivotted so that the blades work with a scissor action for cutting purposes, and a clip ...
07/08/1986
4251916Means in scissors for balancing the closing force of the scissors
The invention relates a means in scissors for balancing the closing force of the scissors. It comprises a wave-shaped spring washer clamped between the head of the scissors rivet and the shear blade, at least one of the contact surfaces being wave-shaped ...
02/24/1981
4241503Pair of scissors
A pair of scissors with an adjusting mechanism comprising a bolt to be inserted through openings of blades of the scissors, a fastener engageable with one of said blades, a means for keeping said fastener to be engaged which said blade, and a nut being pu...
12/30/1980
4153992Cutting scissors particularly for the cutting of yarns
A cutting scissors particularly for cutting yarns, having cutting edges provided on rigid scissors blades, whereby the cutting edge or edges respectively is (are) set in a connecting frame secured to the relative scissors blade at the side thereof remote ...
05/15/1979
4104794Scissors
A scissors, the blades of which are held together by spring bias of a bolted assembly. The bolted assembly is in the form of a screw, a pair of split ring washers and a nut. The screw head is pinned to one blade through the screw head and the nut is fitte...
08/08/1978
4048721Scissors
A pair of scissors with moulded plastics blades having moulded-in metal cutting elements, the cutting elements being contained mainly within the blades so that said blades are substantially of sandwich construction and the cutting elements being provided ...
09/20/1977
 
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