US 10,208,785 B2Granted

Stay tight threaded fasteners

OwnerAlbert Tamerinventor

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Abstract

A male fastener, female fastener, and a plunger that is adapted to secure the female fastener to the male fastener, and to prevent unwanted loosening of the female fastener from the male fastener. The male fastener includes a shaft that may optionally include a plurality of protruding elements that extend outwardly from an external surface of the shaft. The protruding elements may be radially positioned in rows around a circumference of the shaft, to create a channel between the rows of protruding elements. The channel is adapted to receive a corresponding thread located within an aperture of the female fastener. The plunger is adapted to be inserted into a trench located between a set of protruding elements (or into multiple trenches located between multiple protruding elements). The plunger prevents the female fastener from rotating around the shaft in a direction towards the bottom portion of the male fastener.

Claims8

Dependent claims

A male fastener, a female fastener, and a plunger, whereby the male fastener is adapted to be received by and connected to the female fastener, wherein:

(a) the male fastener comprises a rigid shaft, which includes a continuous radial wall that forms a channel that radially travels around a circumference of the shaft from a top portion of the male fastener to a bottom portion of the male fastener, wherein the channel is adapted to receive corresponding threads located within an aperture of the female fastener;
and
(b) the plunger is dimensioned and configured to, without mechanical reinforcement provided by other elements, prevent the female fastener from rotating around the shaft in a direction that causes the female fastener to move towards the bottom portion of the male fastener, and wherein:
(i) the plunger is further dimensioned and configured to permit the female fastener to rotate around the shaft in a direction that causes the female fastener to move towards the top portion of the male fastener, while the plunger makes continuous contact with the shaft;
(ii) the shaft of the male fastener comprises a series of protruding elements, which are located within the continuous radial wall that forms the channel;
(iii) the protruding elements are spaced equally apart, wherein a trench is formed between each protruding element, wherein the plunger is adapted to be inserted into the trench or multiple trenches located between multiple protruding elements;
and
(iv) the plurality of protruding elements are configured to prevent movement of the plunger from a first trench located along one or more protruding elements to an adjoining second trench located along one or more protruding elements.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/662,313Filed 28 Jul 2017 · continuation in part
Priority: 19 Nov 2014
Published: US 2017/0321742 A19 Nov 2017
Granted: 19 Feb 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

F16B 39/282
By special members on, or shape of, the nut or bolt: locking by means of special shape of work-engaging surfaces, e.g. notched or toothed nuts
F16B 33/02
Features common to bolt and nut: shape of thread; Special thread-forms
F16B 37/00
Nuts or like thread-engaging members
F16B 39/10
In which the locking takes place after screwing down: by a plate, spring, wire or ring immovable with regard to the bolt or object and mainly…