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US 10,246,315 B2Granted
Improvements to hand truck and kit thereof
OwnerJerry Combsinventor
Life of this patent
Estimating the term…
Abstract
A hand truck that weighs less than twenty-three kilograms (23 kg) when unloaded. The hand truck has a platform with wheels, which permits the platform to travel along a beam while reducing the chances of seizing as objects are loaded on or unloaded from the hand truck. The hand truck also has a strut pulley sub-assembly that controls the rate of travel of the platform along the beam.
Claims19
A hand truck comprising:
- (a) an H-beam having a length, the beam comprising:
- (a1) an H-beam top;
- and
- (a2) an H-beam bottom;
- (b) a platform body sub-assembly comprising platform rollers, the platform rollers engaging the H-beam to permit the platform body sub-assembly to travel along a portion of the length of the H-beam;
- (c) a plate affixed to the platform body sub-assembly to permit the plate to travel concurrently with the platform body sub-assembly, the plate being arranged substantially perpendicular to the H-beam;
- (d) a strut pulley sub-assembly arranged substantially parallel to the beam, the strut pulley sub-assembly comprising:
- (d1) an upper end;
- (d2) a lower end;
- (d3) a dampener strut comprising:
- (d1A) a strut top;
- and
- (d1B) a strut bottom;
- (d4) a spring arranged substantially parallel to the dampener strut, the spring comprising:
- (d4A) a spring top;
- and
- (d4B) a spring bottom;
- (d5) a strut mount mechanically connecting the strut bottom to the spring bottom;
- and
- (d6) a pulley mount mechanically connecting the strut top to the spring top;
- (e) a head sub-assembly connecting the upper end of the strut pulley sub-assembly to the beam top;
- (f) a rope extending from the platform body sub-assembly to the pulley mount through the head sub-assembly, the rope connecting the platform body sub-assembly to the pulley mount;
- and
- (g) a total unloaded weight of less than twenty-three kilograms (23 kg).
21 more elements
A hand truck comprising:
- a beam comprising a beam top and a beam bottom;
- a platform body sub-assembly comprising rollers, the rollers engaging the beam to permit the platform body sub-assembly to travel along a portion of the beam;
- a strut pulley sub-assembly arranged substantially parallel to the beam, the strut pulley sub-assembly comprising:
- an upper end;
- a lower end;
- a strut comprising a strut top and a strut bottom;
- and
- a spring arranged substantially parallel to the strut, the spring comprising a spring top mechanically coupled to the strut top, the spring further comprising a spring bottom mechanically coupled to the strut bottom, the spring further comprising coils;
- a head sub-assembly connecting the beam top to an upper end of the strut pulley sub-assembly;
- a rope connecting the platform body sub-assembly to the strut top;
- and
- a total weight of less than twenty-three kilograms (23 kg) when unloaded.
9 more elements
Dependencies are inferred from the claim text.