Hand-held portable crimping tool

• US 6,324,884 B1
• Filed: 10/25/2000
• Issued: 12/04/2001
• Est. Priority Date: 06/30/2000
• Status: Expired due to Term

• Current Assignee: Mastercool Incorporated
• Original Assignee: Mastercool Incorporated
• Inventors: Barjesteh, Michael, Barjesteh, Nader
• Primary Examiner(s): Crane, Daniel C.
• Application Number:
  US09/696,516
• Time in Patent Office: 405 Days
• Field of Search: 724/02, 724/16, 724/531.6, 724/531.5, 724/12, 724/70, 292/37
• US Class Current: 72/402
• CPC Class Codes: B21D 39/046 Connecting tubes to tube-like fittings
• CPC Class Codes: B25B 27/10 inserting fittings into hoses
• CPC Class Codes: H01R 43/0424 with more than two radially actuated mandrels
• CPC Class Codes: H01R 43/0427 fluid actuated hand crimping tools
• CPC Class Codes: Y10T 29/5367 Coupling to conduit

Abstract

A hand-held portable crimping tool for crimping fittings to hose assemblies, is manually operable, has removable snap-in dies, and yoke that is hydraulically powered. Operation of the tool causes the snap-in dies to crimp the fitting, wherein a linear force is transformed into a non-linear force applied by the snap-in dies to the fitting.

Claims

1. A hand-held portable crimping tool for securing a fitting to a hose comprising:

a hydraulic body having a crimping piston;

a yoke comprising a top yoke and a bottom yoke, wherein the bottom yoke is coupled to the hydraulic body and the top yoke is coupled to the bottom yoke;

a top die locator in communication with the top yoke;

a bottom die locator in communication with the bottom yoke;

crimping-dies for crimping the hose, said crimping-dies coupled to the bottom die locator and the top die locator; and

,

a guide foot and a corresponding guide hole for a particular crimping-die, the guide foot is comprised of a resilient material, wherein movement of the guide foot into the corresponding guide hole changes the relative position the particular crimping die when a crimping force is applied by the crimping-dies to the fitting;

wherein application of a linear crimping force applied by the crimping piston is transformed to a controlled non-linear crimping force as applied by the crimping-dies to the fitting.

2. The tool as recited in claim 1 wherein the linear crimping force by the crimping piston is transformed to at least a partial radial crimping force as applied by the crimping-dies to the fitting.

3. The tool as recited in claim 1 wherein the linear crimping force by the crimping piston is transformed to correspond to an essentially optimal crimping force for a particular fitting.

4. The tool as recited in claim 1 wherein the resilient material of the guide foot is comprised composite of layers and zones of material of resilient materials.

5. The tool as recited in claim 1 wherein the resilient material of the guide foot has at least one slot.

6. The tool as recited in claim 1 wherein the resilient material of the guide foot has at least one cutout.

7. The tool as recited in claim 1 wherein the linear crimping force by the crimping piston is transformed to at least a partial radial crimping force as applied by the crimping-dies to the fitting.

8. The tool as recited in claim 1 wherein the linear crimping force by the crimping piston is transformed to correspond to an essentially optimal crimping force for a particular fitting.

9. The tool as recited in claim 1 wherein the top yoke is pivotally coupled to the bottom yoke.

10. The tool as recited in claim 1 wherein the top yoke is coupled to the bottom yoke by a single removable coupling.

11. The tool as recited in claim 1 wherein the non-linear crimping force is a function of the linear crimping force.

12. A hand-held portable crimping tool for securing a fitting to a hose comprising:

a hydraulic body having a crimping piston;

a yoke comprising a top yoke and a bottom yoke, wherein the bottom yoke is coupled to the hydraulic body and the top yoke is coupled to the bottom yoke;

a top die locator comprised of a resilient material, the top die locator is in communication with the top yoke;

a bottom die locator in communication with the bottom yoke;

crimping-dies for crimping the hose, said crimping-dies coupled to the bottom die locator and the top die locator;

wherein application of a linear crimping force applied by the crimping piston is transformed to a controlled non-linear crimping force as applied by the crimping-dies to the fitting and the resilient material is comprised of composite layers and zones of material of resilient materials.

13. A hand-held portable crimping tool for securing a fitting to a hose comprising:

a hydraulic body having a crimping piston;

a yoke comprising a top yoke and a bottom yoke, wherein the bottom yoke is coupled to the hydraulic body and the top yoke is coupled to the bottom yoke;

a top die locator in communication with the top yoke;

a bottom die locator comprised of a resilient material, the bottom die locator is in communication with the bottom yoke;

crimping-dies for crimping the hose, said crimping-dies coupled to the bottom die locator and the top die locator;

wherein application of a linear crimping force applied by the crimping piston is transformed to a controlled non-linear crimping force as applied by the crimping-dies to the fitting and the resilient material is comprised of composite layers and zones of material of resilient materials.