US3851514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swing-open crimper
Assignee: Weatherhead Co
•
Filing: 1973-07-18
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Granted: 1974-12-03
•
Expires: 1993-07-18
Abstract
Abstract A machine is disclosed for crimping a fitting onto a hose by means of a contractible collet assembly driven by a reciprocable ram. The ram includes a pusher assembly adjacent the working end thereof for transmitting ram force to the collet assembly. The pusher assembly includes first and second pusher members, and the pusher members are mounted for axial movement with the ram and for lateral swinging movement relative to the ram. In this manner, the pusher members transmit ram force to the collet assembly and are movable to expose the collet assembly for loading and unloading the workpiece and for changing the collet assembly to eliminate the long ram stroke and cycle time associated with prior art machines.
Inventors
- 👤 K Chen
- 👤 H Patel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:09
CPC Classifications
B; B21; B21D; B21D39/00; B21D39/04; B21D39/046; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/5367
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
84 words
A machine for radially deforming a workpiece comprising a bed plate, a ram reciprocable along an axis toward and away from said bed plate, a die assembly disposed adjacent said bed plate for receiving said workpiece, driving means for advancing said ram toward said die assembly, and a pusher assembly between said ram and said die assembly for transmitting ram foRce to said die assembly, said pusher assembly being mounted for lateral pivotal opening movement relative to said ram to expose said die assembly.
Claim 2
Dependent Claim
84 words
A machine for radially deforming a workpiece comprising a bed plate, a ram reciprocable along an axis toward and away from said bed plate, a die assembly disposed adjacent said bed plate for receiving said workpiece, driving means for advancing said ram toward said die assembly, and a pusher assembly between said ram and said die assembly for transmitting ram foRce to said die assembly, said pusher assembly being mounted for lateral pivotal opening movement relative to said ram to expose said die assembly.
Claim 3
Dependent Claim
57 words
A machine as set forth in claim 1 wherein said pusher assembly includes a plurality of pusher members arranged to cooperatively transmit ram force to said die assembly, at least one of said pusher members being pivotally mounted for swinging movement from a ram force transmitting position to a laterally disposed position clear of said die assembly.
Claim 4
Dependent Claim
47 words
A machine as set forth in claim 2 wherein said pusher assembly has a hollow end portion adjacent said die assembly to accommodate a protruding portion of said workpiece, said hollow end portion terminating at an end surface extending about and at least partially encircling said workpiece.
Claim 5
Dependent Claim
52 words
A machine as set forth in claim 3 wherein a pressure plate is disposed between said end surface and said die assembly to assure uniform transmission of pressure to said die assembly, and said die assembly includes axially extending resiliently mounted guide pins which peripherally engage and axially align said pressure plate.
Claim 6
Dependent Claim
31 words
A machine as set forth in claim 2 wherein said pusher assembly includes stop means for limiting the swinging movement of said one pusher member into said ram force transmitting position.
Claim 7
Dependent Claim
21 words
A machine as set forth in claim 5 wherein said stop means comprises a fixed member axially projecting from said ram.
Claim 8
Dependent Claim
44 words
A machine as set forth in claim 2 wherein said pusher assembly has a generally cylindrical configuration, and said one pusher member has a semicylindrical shape and is mounted for swinging movement about an axis parallel to said axis of movement of said ram.
Claim 9
Dependent Claim
74 words
A machine as set forth in claim 2 wherein said pusher assembly has a generally cylindrical configuration and comprises separable semicylindrical pusher assembly halves, one of said pusher assembly halves providing said one pusher member and the other of said pusher assembly halves providing a second pusher member, said second pusher member also being mounted for swinging movement from a ram force transmitting position to a laterally disposed position clear of said die assembly.
Claim 10
Dependent Claim
34 words
A machine as set forth in claim 1 wherein said pusher assembly is resiliently mounted between said ram and die assembly, said pusher assembly being axially aligned with and resiliently baised toward said ram.
Claim 11
Dependent Claim
34 words
A machine as set forth in claim 1 wherein a movable spacer is disposed between said ram and said pusher assembly for limiting the axial movement of said ram away from said bed plate.
Claim 12
Dependent Claim
105 words
A machine for crimping a fitting onto a hose comprising a bed plate, a ram reciprocable along an axis toward and away from the bed plate, a die assembly disposed adjacent said bed plate for receiving a hose and fitting to be crimped thereto, moving means for advancing and retracting said ram along said axis toward and away from said bed plate, and a pusher assembly resiliently mounted between said ram and said die assembly, said pusher assembly including pusher members movable between a closed working position for transmitting ram force to said die assembly and an open loading-unloading position clear of said die assembly.
Claim 13
Dependent Claim
105 words
A machine for crimping a fitting onto a hose comprising a bed plate, a ram reciprocable along an axis toward and away from the bed plate, a die assembly disposed adjacent said bed plate for receiving a hose and fitting to be crimped thereto, moving means for advancing and retracting said ram along said axis toward and away from said bed plate, and a pusher assembly resiliently mounted between said ram and said die assembly, said pusher assembly including pusher members movable between a closed working position for transmitting ram force to said die assembly and an open loading-unloading position clear of said die assembly.
Claim 14
Dependent Claim
38 words
A machine as set forth in claim 11 wherein said pusher members are mounted on pin members axially extending from a fixed member of said machine, said pusher members being resiliently biased towards said ram by spring means.
Claim 15
Dependent Claim
23 words
A machine as set forth in claim 12 wherein said pin members are parallel with the axis of the movement of said ram.
Claim 16
Dependent Claim
123 words
A machine for radially deforming a workpiece comprising a bed plate, a ram reciprocable along a longitudinal axis toward and away from said bed plate, a die assembly disposed adjacent said bed plate for receiving said workpiece, drive means for advancing said ram toward said die assembly, a pusher assembly between said ram and said die assembly, aid pusher assembly having a first pusher member and a second pusher member, said first and Second pusher members transmitting ram force to said die assembly, and mounting means mounting at least one of said pusher members for longitudinal movement with said ram along said longitudinal axis and for lateral pivotal movement away from said die assembly about a pivot axis to expose said die assembly.
Claim 17
Dependent Claim
123 words
A machine for radially deforming a workpiece comprising a bed plate, a ram reciprocable along a longitudinal axis toward and away from said bed plate, a die assembly disposed adjacent said bed plate for receiving said workpiece, drive means for advancing said ram toward said die assembly, a pusher assembly between said ram and said die assembly, aid pusher assembly having a first pusher member and a second pusher member, said first and Second pusher members transmitting ram force to said die assembly, and mounting means mounting at least one of said pusher members for longitudinal movement with said ram along said longitudinal axis and for lateral pivotal movement away from said die assembly about a pivot axis to expose said die assembly.
Claim 18
Dependent Claim
28 words
A machine as set forth in claim 14 wherein said pivot axis is parallel to said longitudinal axis and said pivotal movement is perpendicular to said longitudinal axis.
Claim 19
Dependent Claim
45 words
A machine as set forth in claim 14 wherein said first and second pusher members together extend through an arc of substantially 360* to apply a uniform pressure to said die assembly, and said mounted pusher member extends through an arc of at least 180*.
Claim 20
Dependent Claim
62 words
A machine as set forth in claim 14 wherein said mounting means mounts both of said pusher members for longitudinal movement with said ram along said longitudinal axis and for lateral pivotal movement away from said die assembly about a first pivot axis and a second pivot axis respectively, and said first and second pivot axes are parallel to said ram axis.
Claim 21
Dependent Claim
38 words
A machine as set forth in claim 14 wherein said mounted pusher member is movable between a force transmitting position intermediate said ram and said die assembly and a laterally disposed position spaced laterally from said die assembly.
Claim 22
Dependent Claim
18 words
A machine as set forth in claim 14 wherein each of said pusher members has a semicylindrical cross-section.
Claim 23
Dependent Claim
27 words
A machine as set forth in claim 14 wherein said pusher assembly is mounted on said ram for reciprocating movement with said ram along said longitudinal axis.
Claim 24
Dependent Claim
36 words
A machine as set forth in claim 14 wherein said pusher assembly is resiliently mounted between said ram and said die assembly, and said pusher assembly is axially aligned with and resiliently biased toward said ram.
Claim 25
Dependent Claim
93 words
A machine for radially deforming a workpiece comprising a bed plate, a ram reciprocable along a longitudinal axis toward and away from said bed plate, a die assembly disposed adjacent said bed plate for receiving said workpiece, a pusher assembly for transmitting ram force to said die assembly, and mounting means mounting said pusher assembly for longitudinal movement with said ram along said longitudinal axis and for lateral movement along a predetermined path between a ram force transmitting position adjacent said die assembly and a laterally disposed position to expose said die assembly.
Claim 26
Dependent Claim
93 words
A machine for radially deforming a workpiece comprising a bed plate, a ram reciprocable along a longitudinal axis toward and away from said bed plate, a die assembly disposed adjacent said bed plate for receiving said workpiece, a pusher assembly for transmitting ram force to said die assembly, and mounting means mounting said pusher assembly for longitudinal movement with said ram along said longitudinal axis and for lateral movement along a predetermined path between a ram force transmitting position adjacent said die assembly and a laterally disposed position to expose said die assembly.
References Cited (Backward Citations)
US3072174A
Cited
US3096876A
Cited
US3335594A
Cited
US3720088A
Cited
US3742754A
Cited
US3762209A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |