US3908257A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Go, No-go rivet gun
Assignee: Individual
•
Filing: 1974-08-14
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Granted: 1975-09-30
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Expires: 1994-08-14
Abstract
Abstract A gun for upsetting the shank terminal of a metallic rivet projecting from work comprises: A. A FORWARDLY EXTENDING TUBULAR BARREL, B. A PLUNGER TUBE DRIVEN FORWARDLY WITHIN THE BARREL FOR TRANSMITTING UPSETTING FORCE, C. AN ANVIL CARRIED BY AND MOVABLE AXIALLY RELATIVE TO THE BARREL BETWEEN THE PLUNGER AND RIVET TERMINAL TO RECEIVE SAID UPSETTING FORCE AND TO DELIVER SAME TO THE RIVET TERMINAL, D. AND MEANS RESPONSIVE TO DISPLACEMENT OF THE ANVIL RELATIVE TO THE BARREL AS THE BARREL IS ADVANCED TOWARD THE WORK WITH THE ANVIL IN ENGAGEMENT WITH THE RIVET TERMINAL FOR ENABLING SAID FORWARD DRIVING OF THE PLUNGER WHEN THE ANVIL IS WITHIN A PREDETERMINED AXIAL RANGE OF POSITIONS RELATIVE TO THE BARREL, AND FOR DISABLING SAID FORWARD DRIVING OF THE PLUNGER WHEN THE ANVIL IS OUTSIDE SAID RANGE OF POSITIONS.
Inventors
- 👤 Franklin S Briles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:24
CPC Classifications
B; B21; B21J; B21J15/00; B21J15/10; B21J15/16; B21J15/18; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/53; Y10T29/53709; Y10T29/53717; Y10T29/53726; Y10T29/53765; Y10T29/5377; Y10T29/53774
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
139 words
In a gun for upsetting the shank terminal of a metallic rivet projecting from work, the combination comprising a. a forwardly extending tubular barrel, b. a plunger tube driven forwardly within the barrel for transmitting upsetting force, c. an anvil carried by and movable axially relative to the barrel between the plunger and rivet terminal to receive said upsetting force and to deliver same to the rivet terminal, d. and means responsive to displacement of the anvil relative to the barrel as the barrel is advanced toward the work with the anvil in engagement with the rivet terminal for enabling said forward driving of the plunger when the anvil is within a predetermined axial range of positions relative to the barrel, and for disabling said forward driving of the plunger when the anvil is outside said range of positions.
Claim 2
Dependent Claim
139 words
In a gun for upsetting the shank terminal of a metallic rivet projecting from work, the combination comprising a. a forwardly extending tubular barrel, b. a plunger tube driven forwardly within the barrel for transmitting upsetting force, c. an anvil carried by and movable axially relative to the barrel between the plunger and rivet terminal to receive said upsetting force and to deliver same to the rivet terminal, d. and means responsive to displacement of the anvil relative to the barrel as the barrel is advanced toward the work with the anvil in engagement with the rivet terminal for enabling said forward driving of the plunger when the anvil is within a predetermined axial range of positions relative to the barrel, and for disabling said forward driving of the plunger when the anvil is outside said range of positions.
Claim 3
Dependent Claim
34 words
The combination of claim 1 including a body carrying the barrel, and said means includes a safety valve operable to pass plunger operating pneumatic pressure when the anvil is within said range of positions.
Claim 4
Dependent Claim
29 words
The combination of claim 1 wherein the barrel includes sections which are axially adjustably interconnected, whereby said range may be adjusted by adjusting the axial interconnection of said sections.
Claim 5
Dependent Claim
39 words
The combination of claim 3 including a body carrying one of said sections in fixed position relative to the body, the other of said barrel sections having threaded connection to said one section to provide said axially adjustable interconnection.
Claim 6
Dependent Claim
52 words
The combination of claim 2 wherein said means comprises a cam member movable in said body to effect operation of said safety valve in response to axial movement of the anvil relative to the barrel as the barrel is advanced toward the work with the anvil in engagement with the rivet terminal.
Claim 7
Dependent Claim
30 words
The combination of claim 5 wherein said means also includes a sleeve axially movable within the barrel to transmit said relative axial movement of the anvil to said cam member.
Claim 8
Dependent Claim
38 words
The combination of claim 6 wherein said sleeve has lost motion coupling with the cam member to displace the cam member axially of the barrel only after predetermined axial movement of the anvil rearwardly relative to the barrel.
Claim 9
Dependent Claim
21 words
The combination of claim 7 including yieldable means urging the sleeve, anvil and cam member axially forwardly relative to the barrel.
Claim 10
Dependent Claim
47 words
The combination of claim 8 wherein said yieldable means includes a first spring at the rearward side of the cam member urging the cam member relatively forwardly, and a second spring at the forward side of the cam member and urging the sleeve and anvil relatively forwardly.
Claim 11
Dependent Claim
80 words
The combination of claim 5 wherein the cam member is axially movable in said body and has axially spaced cam risers, the first of which is angled to transmit opening motion to the safety valve in response to first predetermined rearward movement of the cam member relative to the barrel, and the second of which is angled to transmit closing motion to the safety valve in response to second predetermined rearward movement of the cam member relative to the barrel.
Claim 12
Dependent Claim
40 words
The combination of claim 10 wherein said cam member also has a plateau located to maintain the safety valve open when the cam member is within said predetermined axial range of positions, said plateau located axially substantially between said risers.
Claim 13
Dependent Claim
45 words
The combination of claim 1 wherein the gun includes a body having a nose section, and the barrel has axially adjustable interconnection with said nose section, whereby the said range may be adjusted by adjusting the axial interconnection of the barrel and said nose section.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |