US3898833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-hydraulic rivet gun
Assignee: Textron Inc
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Filing: 1974-04-15
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Granted: 1975-08-12
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Expires: 1994-04-15
Abstract
Abstract A rivet gun of the type for setting blind tubular rivets mounted on a mandrel by tensioning the mandrel to the point of rupture. The rivet gun is characterized by an air actuated hydraulically driven mechanism to grip and retract the mandrel and to eject the mandrel when separated from the rivet. The power unit may be fitted with interchangeable rivet setting heads for either inline ''''straight-on'''' riveting or a 90* angle head to permit use of the gun in otherwise inaccessible places.
Inventors
- 👤 Russell F Richardson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:35
CPC Classifications
B; B21; B21J; B21J15/00; B21J15/10; B21J15/16; B21J15/22; B21J15/105; B21J15/30; B21J15/32; B21J15/326; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53709; Y10T29/53717; Y10T29/53726; Y10T29/5373; Y10T29/53739; Y10T29/53743; Y10T29/53748
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
216 words
A rivet gun for setting blind rivets, said gun comprising: A. a setting head for engaging and pulling the mandrel of a blind rivet, B. a body including force exerting means for applying pulling force to said setting head, the direction of said force being generally longitudinal of said body, C. said force exerting means comprising 1. a first hydraulic pressure chamber within said body having a piston reciprocable therein generally longitudinally of the body, 2. stem means movable with said piston in the same direction, 3. means connecting said stem means to the setting head to operate the same, 4. a second hydraulic pressure chamber disposed within said body in parallel closely spaced apart relation to the first chamber, said chambers being connected through an intercommunicating passage within said body, 5. a piston reciprocable in said second chamber, 6. a third pneumatic pressure chamber within said body in axial alignment with said second chamber, 7. a piston reciprocable in said third chamber and connected to the piston in said second chamber for simultaneous movement thereof, 8. means adapted to connect said third chamber to a source of gas under pressure, and 9. means to regulate flow of gas to said third chamber, D. a pistol grip handle on said body adjacent to said third chamber.
Claim 2
Dependent Claim
216 words
A rivet gun for setting blind rivets, said gun comprising: A. a setting head for engaging and pulling the mandrel of a blind rivet, B. a body including force exerting means for applying pulling force to said setting head, the direction of said force being generally longitudinal of said body, C. said force exerting means comprising 1. a first hydraulic pressure chamber within said body having a piston reciprocable therein generally longitudinally of the body, 2. stem means movable with said piston in the same direction, 3. means connecting said stem means to the setting head to operate the same, 4. a second hydraulic pressure chamber disposed within said body in parallel closely spaced apart relation to the first chamber, said chambers being connected through an intercommunicating passage within said body, 5. a piston reciprocable in said second chamber, 6. a third pneumatic pressure chamber within said body in axial alignment with said second chamber, 7. a piston reciprocable in said third chamber and connected to the piston in said second chamber for simultaneous movement thereof, 8. means adapted to connect said third chamber to a source of gas under pressure, and 9. means to regulate flow of gas to said third chamber, D. a pistol grip handle on said body adjacent to said third chamber.
Claim 3
Dependent Claim
10 words
stem means movable with said piston in the same direction,
Claim 4
Dependent Claim
10 words
stem means movable with said piston in the same direction,
Claim 5
Dependent Claim
32 words
externally threaded stem means movable with said piston in the same direction and extending from said body through a coaxial passage in an externally threaded boss on the exterior of the body,
Claim 6
Dependent Claim
32 words
externally threaded stem means movable with said piston in the same direction and extending from said body through a coaxial passage in an externally threaded boss on the exterior of the body,
Claim 7
Dependent Claim
101 words
A rivet gun according to claim 1 further characterized in that said setting head is replaceable and interchangeable with other setting heads and includes a tubular housing detachably secured to said body and a reciprocable pulling head within said housing detachably secured to said piston stem, A. said pistion stem extending from said body through a coaxial passage in an externally threaded boss on the exterior of the body, B. said setting head housing being internally threaded for attachment thereto, C. said piston stem being externally threaded at one end, and D. said pulling head being internally threaded for attachment thereto.
Claim 8
Dependent Claim
50 words
A rivet gun according to claim 1 further characterized in that said setting head is secured to said body with the longitudial axis of said setting head disposed at an angle relative to the longitudinal axis of said body and the direction of force applied by said force exerting means.
Claim 9
Dependent Claim
30 words
a second hydraulic pressure chamber disposed within said body in parallel closely spaced apart relation to the first chamber, said chambers being connected through an intercommunicating passage within said body,
Claim 10
Dependent Claim
30 words
a second hydraulic pressure chamber disposed within said body in parallel closely spaced apart relation to the first chamber, said chambers being connected through an intercommunicating passage within said body,
Claim 11
Dependent Claim
13 words
means connecting said stem means to the setting head to operate the same,
Claim 12
Dependent Claim
13 words
means connecting said stem means to the setting head to operate the same,
Claim 13
Dependent Claim
30 words
a second hydraulic pressure chamber disposed within said body in parallel closely spaced apart relation to the first chamber, said chambers being connected through an intercommunicating passage within said body,
Claim 14
Dependent Claim
30 words
a second hydraulic pressure chamber disposed within said body in parallel closely spaced apart relation to the first chamber, said chambers being connected through an intercommunicating passage within said body,
Claim 15
Dependent Claim
24 words
a piston reciprocable in said second chamber, 5 a third pneumatic pressure chamber within said body in axial alignment with said second chamber, and
Claim 16
Dependent Claim
24 words
a piston reciprocable in said second chamber, 5 a third pneumatic pressure chamber within said body in axial alignment with said second chamber, and
Claim 17
Dependent Claim
168 words
A rivet gun according to claim 3 further characterized in that said setting head is replaceable and interchangeable with other setting heads and includes: A. an elongated tubular housing internally threaded at one end, the longitudinal axis of said tubular housing being in alignment with said body and the direction of force applied by said force exerting means and attached to said body through an externally threaded boss on the exterior of said body surrounding a passage coaxial with said piston stem, B. a tubular setting head housing secured to the opposite end of said elongated tubular housing, the longitudinal axis of said setting head being disposed at an angle relative to the longitudinal axis of said elongated tubular housing, C. a pulling shaft disposed within said elongated longitudinal housing and detachably secured at one end to said piston stem; and B. pivotal crank arm lever means interconnecting said pulling head and said pulling shaft for transmission of force from said pulling shaft to reciprocate said pulling head.
Claim 18
Dependent Claim
58 words
A rivet gun for setting blind rivets, said gun comprising: A. a setting head for engaging and pulling the mandrel of a blind rivet, B. a body including force exerting means for applying pulling force to said setting head, the direction of said force being generally longitudinal of said body and setting head, said force exerting means comprising
Claim 19
Dependent Claim
58 words
A rivet gun for setting blind rivets, said gun comprising: A. a setting head for engaging and pulling the mandrel of a blind rivet, B. a body including force exerting means for applying pulling force to said setting head, the direction of said force being generally longitudinal of said body and setting head, said force exerting means comprising
Claim 20
Dependent Claim
7 words
a piston reciprocable in said second chamber,
Claim 21
Dependent Claim
7 words
a piston reciprocable in said second chamber,
Claim 22
Dependent Claim
15 words
a third pneumatic pressure chamber within said body in axial alignment with said second chamber,
Claim 23
Dependent Claim
15 words
a third pneumatic pressure chamber within said body in axial alignment with said second chamber,
Claim 24
Dependent Claim
140 words
a piston reciprocable in said third chamber and connected to the piston in said second chamber for simultaneous movement thereof, C. an internally threaded tubular setting head housing detachably secured to the externally threaded boss on said body, D. a reciprocable internally threaded pulling head within said housing detachably secured to said piston stem, E. a longitudinal axial passage extending through said setting head, the piston in said first chamber, the stem thereof and said body for passage of used rivet mandrels therethrough, F. a pistol grip handle on said body adjacent said third chamber, G. passage means in said handle for passage of gas under pressure to the third chamber and bleeding of gas from said chamber to the atmosphere, and H. trigger actuated valve means in said handle for alternately controlling flow of gas through said passage means.
Claim 25
Dependent Claim
140 words
a piston reciprocable in said third chamber and connected to the piston in said second chamber for simultaneous movement thereof, C. an internally threaded tubular setting head housing detachably secured to the externally threaded boss on said body, D. a reciprocable internally threaded pulling head within said housing detachably secured to said piston stem, E. a longitudinal axial passage extending through said setting head, the piston in said first chamber, the stem thereof and said body for passage of used rivet mandrels therethrough, F. a pistol grip handle on said body adjacent said third chamber, G. passage means in said handle for passage of gas under pressure to the third chamber and bleeding of gas from said chamber to the atmosphere, and H. trigger actuated valve means in said handle for alternately controlling flow of gas through said passage means.
Claim 26
Dependent Claim
20 words
a piston reciprocable in said third chamber and connected to the piston in said second chamber for simultaneous movement thereof,
Claim 27
Dependent Claim
20 words
a piston reciprocable in said third chamber and connected to the piston in said second chamber for simultaneous movement thereof,
Claim 28
Dependent Claim
15 words
means adapted to connect said third chamber to a source of gas under pressure, and
Claim 29
Dependent Claim
15 words
means adapted to connect said third chamber to a source of gas under pressure, and
Claim 30
Dependent Claim
23 words
means to regulate flow of gas to said third chamber, D. a pistol grip handle on said body adjacent to said third chamber.
Claim 31
Dependent Claim
23 words
means to regulate flow of gas to said third chamber, D. a pistol grip handle on said body adjacent to said third chamber.
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) | 1978-08-11 | 1979-02-10 | 1979-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-11 | 1983-02-10 | 1983-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-11 | 1987-02-10 | 1987-08-12 | $7700.00 | Window Closed / Lapsed |