Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
177 words
A hand tool for removal of oil filters and the like comprising a cup shaped latch carrying housing having an open end adapted to fit over one end of a filter to be removed, said housing including a cylindrical wall portion, latch means carried by the interior of said wall portion including a portion attached to the housing wall and having a resilient free portion extending along the wall and having a filter gripping portion extending inwardly therefrom, and rotatable latch actuating cam means adapted for engagement with the free end portion of said latch means to force the same into operative engagement with said filter, means rotatably mounting said cam means concentrically with the cylindrical wall of said latch carrying housing, and means for rotating said mounting means in one direction to bring the cam means into operative engagement with the latch means to engage said filter and to rotate said filter for removal from its seat and for rotating said mounting means in the opposite direction to disengage the cam means from the latch means.
Claim 2
Dependent Claim
177 words
A hand tool for removal of oil filters and the like comprising a cup shaped latch carrying housing having an open end adapted to fit over one end of a filter to be removed, said housing including a cylindrical wall portion, latch means carried by the interior of said wall portion including a portion attached to the housing wall and having a resilient free portion extending along the wall and having a filter gripping portion extending inwardly therefrom, and rotatable latch actuating cam means adapted for engagement with the free end portion of said latch means to force the same into operative engagement with said filter, means rotatably mounting said cam means concentrically with the cylindrical wall of said latch carrying housing, and means for rotating said mounting means in one direction to bring the cam means into operative engagement with the latch means to engage said filter and to rotate said filter for removal from its seat and for rotating said mounting means in the opposite direction to disengage the cam means from the latch means.
Claim 3
Dependent Claim
37 words
A hand tool as set forth in claim 1 wherein the latch means comprises a leaf spring having a portion secured to the wall of the housing and having a free portion extending circumferentially along the wall.
Claim 4
Dependent Claim
20 words
A hand tool as set forth in claim 1 wherein the filter gripping portion of said latch means is toothed.
Claim 5
Dependent Claim
24 words
A hand tool as set forth in claim 1 wherein stop means are provided to prevent rotation of the filter in the wrong direction.
Claim 6
Dependent Claim
35 words
A hand tool as set forth in claim 1 wherein the mounting means for said cam means includes a cam carrying plate rotatably mounted in the base portion of said cup shaped latch carrying housing.
Claim 7
Dependent Claim
23 words
A hand tool as set forth in claim 5 wherein said cam means comprises knife-like members projecting upwardly from said cam carrying plate.
Claim 8
Dependent Claim
52 words
A hand tool as set forth in claim 5 wherein said cam carrying plate is provided with a stem portion projecting through an opening in the base of said cup shaped housing and flatheaded means carried by said stem outside of said housing for engagement witH a socket wrench or the like.
Claim 9
Dependent Claim
31 words
A hand tool as set forth in claim 1 wherein said housing is provided with filter guide and cam means to facilitate assembly of the filter with the filter removing tool.
Claim 10
Dependent Claim
64 words
A hand tool as set forth in claim 8 wherein the filter guide and cam means comprises a plurality of upright straps, each secured at one end to the interior of the cylindrical wall of said casing or housing and including free portion inclined at its outer end to provide cam means to guide the end of the filter into the latch carrying housing.
Claim 11
Dependent Claim
124 words
A hand tool as set forth in claim 9 wherein the latch means comprises a plurality of spaced leaf spring latch members, each having a portion secured to the cylindrical casing and having a free portion extending circumferentially from the fixed portion, said guide means comprising leaf spring members corresponding in location and number to said latch members and each being secured to said casing adjacent the fixed portion of one of said latch members and each having a flexible free portion extending over the fixed portion of the corresponding latch member, the end portion of each of said flexible free portions being inclined to serve as a guide or cam for the end of the filter as it is assembled with said tool.