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US 11,078,946 B2Granted
Toolless screw type fastener
OwnerMichael Levineinventor
Life of this patent
Estimating the term…
Abstract
The invention is directed to a toolless screw including a body portion which comprises a shaft portion and a screw portion which includes a shank portion and a tip portion. The shank portion includes at least two helical threads which extend off the shank either at different angles, different distances, or a combination thereof. The tip portion is positioned at an end of the shank portion and has a diameter which is less than the diameter of the shank portion and extends to a point. The body portion is integrated with a screw portion at the end of the shank portion which is opposite the end where the tip portion is positioned.
Claims15
A toolless screw comprising:
- (A) a body portion which consists of a shaft portion, an optional support portion, and an optional adapter portion,
- (B) a screw portion which comprises a shank portion and a tip portion,
- wherein said shaft portion consists of a continuous, voidless, and generally cylindrical polygon and has a length from 0.25 inches to 12 inches,
- wherein said shank portion consists of a generally cylindrical portion with two or more threads which extend off the shank either at different angles, different distances, or a combination thereof,
- said tip portion consists of a frustoconical threadless area which extends to a point and is positioned at a first end of the shank portion,
- wherein the body portion is integrated with the screw portion at a second end of the shank portion which is opposite the first end where the tip portion is positioned,
- wherein the optional adapter portion consists of a continuous, voidless, and generally cylindrical threaded bolt and is provided on the upper end of the body, opposite the screw portion, and
- wherein the optional support portion has a frustoconical shape where the smaller diameter end is positioned toward the shaft portion and the larger diameter end is positioned toward the screw portion end of the body portion.
5 more elements
A toolless screw comprising:
- (A) a body portion which consists of a shaft portion,
- (B) a screw portion which comprises a shank portion and a tip portion,
- wherein said shaft portion consists of a continuous, voidless, and generally cylindrical polygon and has a length from 0.25 inches to 12 inches, and a diameter of at least ⅛ of an inch,
- wherein said shank portion includes at least two helical threads which extend off the shank either at different angles, different distances, or a combination thereof,
- said tip portion is positioned at an end of the shank portion and has a diameter which is less than the diameter of the shank portion and extends to a point,
- wherein the body portion is integrated with the screw portion at the end of the shank portion which is opposite the end where the tip portion is positioned, and
- wherein the shank portion has a roughened surface between successive convolutions of helical thread.
4 more elements
A toolless screw consisting of:
- (A) a body portion which consists of a shaft portion, optionally a support portion, and optionally an adapter portion,
- (B) a screw portion which consists of a shank portion and a tip portion,
- wherein said shaft portion consists of a continuous, voidless, and generally cylindrical polygon and has a length from 0.25 inches to 12 inches, and a diameter of at least ⅛ of an inch,
- wherein said shank portion consists of a generally cylindrical portion with two threads which extend off the shank either at different angles, different distances, or a combination thereof,
- wherein said tip portion consists of a frustoconical threadless area which extends to a point and is positioned at a first end of the shank portion,
- wherein said body portion is integrated with the screw portion at a second end of the shank portion which is opposite the first end of the shank portion and a second end of the shaft portion which is opposite a first end of the shaft portion,
- wherein the optional adapter portion consists of a continuous, voidless, and generally cylindrical threaded bolt and is provided on the upper end of the body, opposite the screw portion, and
- wherein the optional support portion has a frustoconical shape where the smaller diameter end is positioned toward the shaft portion and the larger diameter end is positioned toward the screw portion end of the body portion.
5 more elements
Dependencies are inferred from the claim text.