Apparatuses and methods for modifying a defect in a surface
AssigneeToyota Motor Engineering & Manufacturing North America, Inc.
InventorJared R. Hitch
Life of this patent
Estimating the term…
Abstract
An apparatus for modifying a defect in a surface may include a hollow shaft including a first open end and a second open end opposite the first open end, a plunger slidable within the hollow shaft and extending from the first open end, a driver coupled to the second open end of the hollow shaft and extending from the second open end, and a passive resistance mechanism coupling the plunger to the hollow shaft. The passive resistance mechanism biases the plunger towards the second open end of the hollow shaft. The plunger has markings thereon that are visible when the plunger is extended from the first open end. Methods for using the apparatus to modify a defect in a surface are also described.
Claims18
An apparatus comprising:
- a hollow shaft comprising a first open end and a second open end opposite the first open end;
- a plunger slidable within the hollow shaft and extending from the first open end, the plunger having a plurality of markings thereon;
- a driver directly coupled to the second open end of the hollow shaft and extending from the second open end;
- and
- a passive resistance mechanism directly coupling the plunger to the hollow shaft, wherein a pin secures the passive resistance mechanism within the hollow shaft, and the passive resistance mechanism biases the plunger towards the second open end of the hollow shaft;
- wherein:
- each of the plurality of markings is indicative of a force to be transferred from the plunger through the hollow shaft to the driver when a length of the plunger is withdrawn from the first open end of the hollow shaft and released effective to enable the passive resistance mechanism to return to an initial position from an extended position.
A method of modifying a defect in a surface, comprising:
- contacting the surface with an apparatus comprising:
- a hollow shaft comprising a first open end and a second open end opposite the first open end;
- a plunger slidable within the hollow shaft and extending from the first open end, the plunger having a plurality of markings thereon;
- a driver directly coupled to the second open end of the hollow shaft and extending from the second open end;
- and
- a passive resistance mechanism directly coupling the plunger to the hollow shaft, wherein a pin secures the passive resistance mechanism within the hollow shaft, and the passive resistance mechanism biases the plunger towards the second open end of the hollow shaft;
- withdrawing a length of the plunger from the first open end of the hollow shaft to expose a predetermined marking of the plurality of markings, thereby extending the passive resistance mechanism from an initial position to an extended position;
- releasing the plunger effective to enable the passive resistance mechanism to return to the initial position from the extended position;
- transferring a force from the plunger through the hollow shaft to the driver, wherein the predetermined marking is indicative of the force;
- and
- transferring the force from the driver to the surface, thereby decreasing a size of the defect in the surface.
A method for modifying a defect in a surface, comprising:
- contacting the surface with an apparatus comprising:
- a hollow shaft comprising a first open end and a second open end opposite the first open end;
- a plunger slidable within the hollow shaft and extending from the first open end, the plunger having a plurality of markings thereon;
- a driver in the form of a nylon tip directly coupled to the second open end of the hollow shaft and extending from the second open end;
- and
- a spring directly coupling the plunger to the hollow shaft, wherein a pin secures the spring within the hollow shaft, and spring biases the plunger towards the second open end of the hollow shaft;
- withdrawing a length of the plunger from the first open end of the hollow shaft to expose a predetermined marking of the plurality of markings, thereby extending the spring from an initial position to an extended position;
- releasing the plunger effective to enable the spring to return to the initial position from the extended position;
- transferring a force from the plunger through the hollow shaft to the nylon tip;
- and
- transferring the force from the nylon tip to the surface effective to decrease a size of the defect, wherein the predetermined marking is indicative of the force.
Dependencies are inferred from the claim text.