Extensible animal leash with exponentially-increasing restraint and incremental weight therefor
View Patent ↗The extensible leash system comprises a rope and a leash extending from the rope. A weight system including an incremental weight device is suspended to the rope and has a first, second, third and fourth weights mounted therein. There is also provided a mechanism for raising the first, second, third and fourth weights with the rope in sequence according to a first distance interval along the rope between the first and second weights, according to a second distance interval along the rope between the second and third weights, and according to a third distance interval along the rope between the third and fourth weights, wherein a relation between the weight extents of the first, second, third and fourth weights, and the first, second and third distance intervals represents an exponential increase in a restraining action on the rope and the leash.
1. An incremental weight device comprising;
an upper and lower tubular sections extending vertically, said upper tubular section being telescopically mounted inside said lower tubular section and being telescopically movable vertically inside and relative to said lower tubular section between a collapsed position and an extended position;
said upper and lower tubular sections being contiguous with each other in said collapsed and extended positions;
means for preventing a separation of said upper tubular section from said lower tubular section in said extended position; and
each of said upper and lower tubular sections having a removable plug in a lower end thereof and said removable plug having a weight removably mounted therein, wherein said weight in said lower tubular section is heavier than said weight in said upper tubular section.
2. The incremental weight device as claimed in claim 1 , further comprising:
a lowermost tubular section extending vertically;
said lower tubular section being telescopically mounted inside said lowermost tubular section and being telescopically movable inside and relative to said lowermost tubular section;
means for preventing separation of said lower tubular section from said lowermost tubular section; and
said lowermost tubular section having a removable lowermost plug in a lower end thereof and a lowermost weight removably mounted in said removable lowermost plug, wherein said lowermost weight is heavier than said weight in said lower tubular section.
3. The incremental weight device as claimed in claim 1 , wherein said means for preventing a separation comprises a shoulder extending radially outwardly from said plug on said lower end of said upper tubular section, and a lip extending radially inwardly from an upper end of said lower tubular section, and said lip and said shoulder having dimensions to interfere with each other in said extended position.
4. The incremental weight device as claimed in claim 1 , wherein said upper tubular section has an eyelet on an upper end thereof.
5. The incremental weight device as claimed in claim 3 , wherein each of said plugs has a cavity therein, and and each of said weights has a torus shape and is mounted in said cavity.