Back to results
US 4,283,061 AGranted
Blow gun dart
OwnerRolf W. Jordaninventor
Life of this patent
Estimating the term…
Abstract
A blow gun dart having an elongated specially tapered shaft which is provided with a specially shaped impeller. The special design of the dart enables it to traverse an exceptionally long distance over a substantially straight path. Wings may be added to the shaft of the dart to improve its aerodynamic performance. Alternatively the impeller may be mounted on a foreshortened shaft having a distended section in the forward portion of the shaft.
Claims12
A blow gun dart comprising:
- an elongated shaft tapering from tip to tail wherein the forward portion of the shaft has a diameter larger than the rearward portion of the shaft;
- a hollow impeller secured to the rearward portion of said elongated shaft;
- said hollow impeller including a conical forward section having a first predetermined included angle with respect to the center line of the shaft and a rearward section containing a conical portion having a second predetermined angle with respect to the center line of the shaft;
- and
- wherein the center of gravity of said dart is located in the forward portion of said elongated shaft.
2 more elements
A blow gun dart comprising:
- an elongated shaft having a first portion with a first diameter, a second portion contiguous to and integral with the first portion and having a second diameter greater than the first diameter, and a third portion contiguous to the second portion and integral with the first and second portions and having a third diameter less than the first and second diameters;
- a hollow impeller secured to the third portion of said elongated shaft;
- said hollow impeller including a conical forward section having a first predetermined included angle with respect to the center line of the shaft and a rearward section containing a conical portion having a second predetermined angle with respect to the center line of the shaft;
- and
- wherein the center of gravity of said dart is located forward of the midpoint of said shaft.
2 more elements
Dependencies are inferred from the claim text.