Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
234 words
A pneumatically operated impact-action self-propelled reversible mechanism for driving holes in the earth by compacting the soil, comprising: a housing of said mechanism, having a pointed end; an impact member adapted for reciprocation interiorly of said housing and defining therewith working chambers of variable volume, said impact member delivering upon said housing repeating impacts, as said impact member is reciprocated thereinside in operation of said mechanism; an air conduit means; a sleeve connected with said air conduit means and cooperating with said impact member, said sleeve being adapted to supply compressed air into said chambers for effecting reciprocations of said impact member; a nut secured in said housing adjacent to the end thereof, opposite to said pointed end, said compressed air supply sleeve being threadedly secured in said nut for axial displacement relative to said nut, when said air conduit means is rotated; said nut having a plurality of longitudinal oblique slits made therein, said slits defining therebetween at least a pair of resiliently deformable cantilever members projecting axially beyond the adjacent face end of said nut, the longitudinal axial line of each said resiliently deformable cantilever member extending in opposition to the direction of the displacement of said compressed air supply sleeve, when the latter is screwed into said nut, said cantilever members being adapted to engage an abutment of said compressed air supply sleeve, when the latter is screwed into said nut.
Claim 2
Dependent Claim
234 words
A pneumatically operated impact-action self-propelled reversible mechanism for driving holes in the earth by compacting the soil, comprising: a housing of said mechanism, having a pointed end; an impact member adapted for reciprocation interiorly of said housing and defining therewith working chambers of variable volume, said impact member delivering upon said housing repeating impacts, as said impact member is reciprocated thereinside in operation of said mechanism; an air conduit means; a sleeve connected with said air conduit means and cooperating with said impact member, said sleeve being adapted to supply compressed air into said chambers for effecting reciprocations of said impact member; a nut secured in said housing adjacent to the end thereof, opposite to said pointed end, said compressed air supply sleeve being threadedly secured in said nut for axial displacement relative to said nut, when said air conduit means is rotated; said nut having a plurality of longitudinal oblique slits made therein, said slits defining therebetween at least a pair of resiliently deformable cantilever members projecting axially beyond the adjacent face end of said nut, the longitudinal axial line of each said resiliently deformable cantilever member extending in opposition to the direction of the displacement of said compressed air supply sleeve, when the latter is screwed into said nut, said cantilever members being adapted to engage an abutment of said compressed air supply sleeve, when the latter is screwed into said nut.
Claim 3
Dependent Claim
113 words
A pneumatically operated mechanism, according to claim 1, wherein said resiliently deformable cantilever members represent each a beam displaying uniform resistance in the direction of the action of friction forces produced by the engagement of said resiliently deformable cantilever members with said abutment of said compressed air supply sleeve, the angle of the inclination of the longitudinal axial line of each said cantilever member relative to the generatrix of the cylindrical surface of said nut being of a value substantially equal to the angle of friction produced by the engagement of said resiliently deformable cantilever members with said abutment of said compressed air supply sleevE, when the latter is screwed into said nut.
Claim 4
Dependent Claim
20 words
A pneumatically operated mechanism, according to claim 2, wherein said resiliently deformable cantilever members have each a smooth internal surface.