US3786550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fastener applying tool
Assignee: Individual
•
Filing: 1972-10-05
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Granted: 1974-01-22
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Expires: 1992-10-05
Abstract
Abstract The tool of this invention is specifically adapted to apply a novel clamping device or temporary fastener which includes a body having an enlarged head end to engage the near side of work to be clamped, a tension member axially movable in the body and having a gripper head at its forward end to engage the remote side of the work and an aft end projecting from the aft end of the body to be engaged by a puller, and a locking actuator axially movable forward on the body to lock the tension member in clamping position. The tool includes a first barrel to surround the fastener body and engage the head end to push it against the work, a second barrel slidable in the first barrel to move the actuator, and a puller slidable in the second barrel to retract the tension member. The forward end of the puller has a gripping jaw to engage the tension member. A first reaction member in the form of a cylinder pushes solidly against the second barrel which pushes yieldingly through a spring against the first barrel. A second reaction member in the form of a piston retracts the puller under fluid pressure. The force applied first retracts the puller until a predetermined clamping load is achieved, and then forces the second barrel forward with respect to the first barrel to contact the actuator and lock the clamping device.
Inventors
- 👤 S Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:43
CPC Classifications
B; B21; B21J; B21J15/00; B21J15/38; B21J15/42; B25; B25B; B25B31/00; B25B31/005; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53678; Y10T29/53709; Y10T29/53717; Y10T29/53726; Y10T29/53796; Y10T29/5383
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
165 words
An applying tool for use with a clamping device having an elongate body with an enlarged head end to engage the near side of work to be clamped, a tension member axially movably mounted in the body and having a gripper head at its forward end to engage the remote side of the work and a formation at its aft end for connection to a puller, and a locking actuator movable axially forward on the body to lock the tension member in clamping position, the tool comprising: a first, clamping, barrel sized to fit freely over the body of the clamping device and engage the enlarged head end to force it axially against the work; an elongate puller having a formation at its forward end to engage the aft end of the tension member to pull it into clamping position; and a second, locking, barrel slidable within the first barrel and movable forward therein to engage the actuator and move it forward to locking position.
Claim 2
Dependent Claim
165 words
An applying tool for use with a clamping device having an elongate body with an enlarged head end to engage the near side of work to be clamped, a tension member axially movably mounted in the body and having a gripper head at its forward end to engage the remote side of the work and a formation at its aft end for connection to a puller, and a locking actuator movable axially forward on the body to lock the tension member in clamping position, the tool comprising: a first, clamping, barrel sized to fit freely over the body of the clamping device and engage the enlarged head end to force it axially against the work; an elongate puller having a formation at its forward end to engage the aft end of the tension member to pull it into clamping position; and a second, locking, barrel slidable within the first barrel and movable forward therein to engage the actuator and move it forward to locking position.
Claim 3
Dependent Claim
63 words
A tool as claimed in claim 1; wherein first and second reaction members are provided and are connected to the aft ends of the first barrel and the puller respectively; the reaction members being relatively movable in axially opposite directions to apply opposing axial forces of equal magnitude to retract the tension member with respect to the head end of the clamping device.
Claim 4
Dependent Claim
43 words
A tool as claimed in claim 2; wherein the second barrel is movable with the first barrel during the clamping operation and is further movable forward with respect to the first barrel to contact the actuator and move it forward to locking position.
Claim 5
Dependent Claim
56 words
A tool as claimed in claim 2; wherein the first reaction member is axially slidably connected to the first barrel and in positive pressural engagement with the second barrel; and the second barrel is in yielding pressural engagement with the first barrel to yieldingly apply the force of the first reaction member to the first barrel.
Claim 6
Dependent Claim
106 words
A tool as claimed in claim 2; wherein the puller is slidably mounted within the second barrel with its forward end extending beyond the forward end of the barrel in inoperative position; the forward end of the puller is divided iNto a plurality of jaws defining a central passage to move axially over the aft end of the tension member; and the outer diameter of the jaws is greater than the inner diameter of the second barrel to cause the jaws to be deflected radially inward upon retraction of the puller with respect to the second barrel and grip the aft end of the tension member.
Claim 7
Dependent Claim
30 words
A tool as claimed in claim 5; wherein the inner gripping surfaces of the jaws are formed with axially spaced serrations to positively engage corresponding serrations on the tension member.
Claim 8
Dependent Claim
19 words
A tool as claimed in claim 6; wherein the serrations are in the form of an internal screw thread.
Claim 9
Dependent Claim
120 words
A tool as claimed in claim 1; wherein the forward end of the first barrel extends well beyond the forward end of the second barrel; the puller is slidably mounted within the second barrel with its forward end projecting beyond the forward end of the second barrel in inoperative position; a first reaction member is axially slidably connected to the first barrel and in positive pressural engagement with the second barrel; the second barrel is in yielding pressural engagement with the first barrel; a second reaction member is connected to the aft end of the puller; and the reaction members are movable in axially opposite directions to apply retracting force to the puller and extending force to the second barrel.
Claim 10
Dependent Claim
82 words
A tool as claimed in claim 8; wherein the forward end of the puller is divided into a plurality of jaws defining a central passage to move axially over the aft end of the tension member; and the outer diameter of the jaws is greater than the inner diameter of the second barrel to cause the jaws to be deflected radially inward upon retraction of the puller with respect to the second barrel and grip the aft end of the tension member.
Claim 11
Dependent Claim
30 words
A tool as claimed in claim 9; wherein the inner gripping surfaces of the jaws are formed with axially spaced serrations to positively engage corresponding serrations on the tension member.
Claim 12
Dependent Claim
19 words
A tool as claimed in claim 10; wherein the serrations are in the form of an internal screw thread.
Claim 13
Dependent Claim
60 words
A tool as claimed in claim 8; wherein the aft end of the second barrel is axially rearward of the aft end of the first barrel; abutments are provided at the aft ends of each barrel; and a high spring rate compression spring is located between the abutments to transmit clamping force from the second barrel to the first barrel.
Claim 14
Dependent Claim
32 words
A tool as claimed in claim 12; wherein the reaction members are adapted to develop sufficient axial force to overcome the compression spring and move the second barrel forward to clamping position.
Claim 15
Dependent Claim
126 words
A tool as claimed in claim 8; wherein the first reaction member is provided at its forward end with a generally cylindrical housing having an internal abutment at its aft end and an inwardly directed flange at its forward end; the aft end of the second barrel is axially rearward of the aft end of the first barrel and is provided with an external flange in positive engagement with the internal abutment of the housing; the aft end of the first barrel is provided with an external flange located within the housing and in engagement with the housing flange; and the yielding pressural engagement between the barrels is provided by a coil spring surrounding the second barrel and axially compressed between the flanges of the barrels.
Claim 16
Dependent Claim
33 words
A tool as claimed in claim 14; wherein the first reaction member is an elongate body having an axial passage therein; and the second reaction member is axially movably mounted in the passage.
Claim 17
Dependent Claim
46 words
A tool as claimed in claim 14; wherein the first reaction member is a cylinder; the second reaction member is a piston slidable in the cylinder; and a source of fluid pressure is connected to the forward portion of the cylinder to move the piston aft.
Claim 18
Dependent Claim
33 words
A tool as claimed in claim 16; wherein a coMpression spring is located in the cylinder aft of the piston to return the piston to inoperative position when the fluid pressure is released.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |