Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
200 words
A fluid pressure operated impact mechanism comprising: a. a plunger member and a stop member mounted to move towards and away from one another along an aligned axis in face-to-face relationship to deliver a succession of blows to a percussion tool or the like connected to one of said members; b. annular flange means provided on one of said members effective to form a pressure chamber in an interface region between said members during reciprocating movement thereof; c. means for supplying a pressure medium to said pressure chamber to exert a separating force between said members; d. elastic deformable means arranged in said pressure chamber to be compressed axially between said members and pressed radially against said flange means by the force of the pressure medium during the movement of said members toward one another to seal said pressure chamber until the pressure therein attains a force effective to cause said members to separate and to restore said elastic means to its relaxed form during the separating movement; and e. venting means for automatically venting pressure medium from said pressure chamber during that portion of said toward and away movement when said pressure chamber becomes unsealed by said elastic means.
Claim 2
Dependent Claim
200 words
A fluid pressure operated impact mechanism comprising: a. a plunger member and a stop member mounted to move towards and away from one another along an aligned axis in face-to-face relationship to deliver a succession of blows to a percussion tool or the like connected to one of said members; b. annular flange means provided on one of said members effective to form a pressure chamber in an interface region between said members during reciprocating movement thereof; c. means for supplying a pressure medium to said pressure chamber to exert a separating force between said members; d. elastic deformable means arranged in said pressure chamber to be compressed axially between said members and pressed radially against said flange means by the force of the pressure medium during the movement of said members toward one another to seal said pressure chamber until the pressure therein attains a force effective to cause said members to separate and to restore said elastic means to its relaxed form during the separating movement; and e. venting means for automatically venting pressure medium from said pressure chamber during that portion of said toward and away movement when said pressure chamber becomes unsealed by said elastic means.
Claim 3
Dependent Claim
46 words
A fluid pressure operated impact mechanism as claimed in claim 1, wherein the elastically deformable sealing means has an axial dimension, when relaxed, that is greater than the axial dimension of said annular flange means but less than twice the axial dimension of the flange means.
Claim 4
Dependent Claim
55 words
A fluid pressure operated impact mechanism as claimed in claim 2 wherein the elastically deformable sealing means has a relaxed axial dimension substantially twice the axial height of the support wall, whereby a substantial amount of axial deformation of the sealing means may take place, without forcing the sealing means away from the support wall.
Claim 5
Dependent Claim
35 words
A fluid pressure operated impact mechanism as claimed in claim 1 wherein the pressure chamber forms a single peripheral separating line, and the sealing means comprises a single sealing member extending along the separating line.
Claim 6
Dependent Claim
45 words
A fluid pressure impact mechanism as claimed in claim 1 wherein the pressure chamber is formed with additional flange means surrounding a central shaft for axially guiding one of said members, and wherein additional sealing means are provided to press against said additional flange means.
Claim 7
Dependent Claim
26 words
A fluid pressure operated impact mechanism as claimed in claim 1 wherein the elastically deformable sealing means has, in its relaxed condition, a circular cross section.
Claim 8
Dependent Claim
17 words
A fluid pressure operated impact mechanism as claimed in claim 6 wherein the sealing means is tubular.
Claim 9
Dependent Claim
25 words
A fluid pressure operated impact mechanism as claimed in claim 1 wherein the sealing means comprises an integral base plate resting in the pressure chamber.
Claim 10
Dependent Claim
20 words
A fluid pressure operated impact mechanism as claimed in claim 1 wherein the sealing means comprises an axially extending bellows.
Claim 11
Dependent Claim
45 words
A fluid pressure operated impact mechanism as claimed in claim 9 wherein the outer fold of the bellows has a larger surface area than the other folds, thereby to hold the outer fold in sealing engagement by means of forces exerted by the pressure medium.