US 5,495,651 A · Hand tool for removing hoses

Abstract

A hand held tool for the removal of vacuum hoses includes a removable grasping handle portion. An elongated slender shaft portion has a free end connected to the removable handle portion and a working end. A sharp edged, tapered, U-shaped slot is disposed on the working end of the elongated slender shaft portion. The working end has a taper for working the tool behind a hose which has its end pressed against a flush wall. A double fulcrum is provided to give a large mechanical advantage during early part of the pry to break a rubber hose free and then a smaller mechanical advantage during a later part of the pry to remove the hose more rapidly. Sharp edged, non-chamfered edges increase the surface contact area of the end of a hose and has a removable grasping handle. The sharp edged U-shaped slot for surrounds a significant portion of an exposed end of a hose so as to apply shear-type removal stress as near as possible to a frictionally resistive tube inserted in the hose.

Drawings

Claims2

Dependent claims

A hand held tool for prying a hose from a mounting pipe, comprising;

removable grasping handle means having a square blind bore;
an elongated slender shaft having a square end inserted into said square blind bore and a pry bar means disposed on the opposite end,
said pry bar means comprising;
a substantially flat end portion having upper and lower surfaces;
a U-shaped slot cut into a distal end of said flat end portion to form a pair of substantially parallel prongs which are "U" shaped slot meeting said upper and lower surfaces of said flat portion at sharp corners so as to prevent pinching together of the hose as it is pried from the mounting tube;
double fulcrum means for improving the prying efficiency, said double fulcrum means comprising an intermediate flat lower surface and an inner flat lower surface, a first fulcrum means formed by a bend between said lower surface of said substantially flat end portion surface and said intermediate flat lower surface for providing a large force advantage during a first part of a prying action, a second fulcrum means formed by a bend between said intermediate flat lower surface and said inner flat lower surface for providing a large motion advantage during a second part of the prying action.

3 more elements

Dependencies are inferred from the claim text.

Description5,625 words

Summary4,140 words

#1. Field of the Invention

#The present invention relates to a hand held tool. More particularly, the present invention relates to a hand held tool for the removal of vacuum hoses. The field of automotive maintenance is seen as the most obvious benefactor from the unique advantages of this invention. More generally, any machinery having flexible hoses slipped over and attached to tubular stub fittings could use this invention to improve the ease with which the hoses could be replaced.

#Thus it can be seen that the potential fields of use for this invention are myriad, and the particular preferred embodiment described herein is in no way meant to be limiting the particular field chosen for exposition of the details of the invention.

Brief description of the drawings6 figures

#Various other objects, features, and attendant advantages of the present invention will become more fully appreciated as the same becomes better understood when considered in conjunction with the accompanying drawings, in which like reference characters designate the same or similar parts throughout the several views, and wherein:

#FIG. 1 is a perspective view of the hand tool for removal of vacuum hoses of the present invention;

#FIG. 2 is a partial front view of the hand tool shown in FIG. 1;

Detailed description1,339 words

#10--hand tool for the removal of vacuum hoses

#12--removable handle portion of tool

#14--elongated slender shaft of tool

Facts

Application

08/334,045Filed 4 Nov 1994

Granted

5 Mar 1996

Term ended

4 Nov 2014

Estimated · how

Pre-1995 term; greater of 17 years from grant or 20 years from filing when eligible. Maintenance-fee lapses, terminal disclaimers and statutory extensions have not been checked. The continuity chain may be incomplete; this is not an enforceability determination.

Classification7 codes

B25B 27/02
Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise…: for…
B25B 27/04
For connecting objects by press fit or detaching same: inserting or withdrawing keys
Y10T 29/53657
Means to assemble or disassemble: to apply or remove a resilient article [e.g., tube, sleeve, etc.]
Y10T 29/5367
Means to assemble or disassemble: coupling to conduit

Hand tool for removing hoses

Life of this patent

Hand tool for removing hoses

Life of this patent

Life of this patent

Abstract

Drawings

Drawings

Claims2

Description5,625 words

Drawings

Classification7 codes

Life of this patent

Description5,625 words