US3898835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Backup tool
Assignee: Lockheed Martin Corp
•
Filing: 1973-10-01
•
Granted: 1975-08-12
•
Expires: 1993-10-01
Abstract
Abstract A manually held tool to back up material through which riveting is undergoing and which counteracts the driving force from a rivet or fastener gun. The tool comprises an elongated hollow tubular shank supporting a nylon sleeve frictionally mounted in its bore and protruding slightly beyond the end of the shank. An enlarged handle member is integrally formed at the other end of the tubular shank, with the shank''s bore extending therethrough. A pusher assembly is mounted within the handle in the bore for providing stability to the nylon sleeve, as against a riveting force, and to adjustably position the nylon sleeve. The pusher assembly is recessed at its leading end to prevent damage to the fastener when a minimum of nylon cushion protrudes from the shank.
Inventors
- 👤 Gordon Winter
- 👤 J O Adcock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:41
CPC Classifications
B; B21; B21J; B21J15/00; B21J15/38; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53709; Y10T29/5377; Y10T29/53909; Y10T29/5393; Y10T29/53991
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
71 words
A tool comprising an elongated rigid body member having ends and an axial bore extending therethrough, a tubular resilient insert mounted in said bore and being slidably secured by press fitting within said bore and having an end portion protruding from said one of said ends, and means mounted in said bore opposite said tubular insert for adjustably fixing the position of said insert relative to said one of said ends.
Claim 2
Dependent Claim
71 words
A tool comprising an elongated rigid body member having ends and an axial bore extending therethrough, a tubular resilient insert mounted in said bore and being slidably secured by press fitting within said bore and having an end portion protruding from said one of said ends, and means mounted in said bore opposite said tubular insert for adjustably fixing the position of said insert relative to said one of said ends.
Claim 3
Dependent Claim
13 words
The tool of claim 1 wherein said positioning means comprises a pusher assembly.
Claim 4
Dependent Claim
34 words
The tool of claim 2 wherein said pusher assembly comprises a bar member of substantially the same diameter as said tubular insert and having an axially-oriented relief, and means for propelling said bar member.
Claim 5
Dependent Claim
52 words
The tool of claim 3 wherein said propelling means comprises a screw member mounted in said bore being threaded for cooperation with said screw member to the extent required to propel said hollow insert past said one of said ends, access to said propelling means being through the other of said ends.
Claim 6
Dependent Claim
108 words
A tool comprising an elongated rigid body member having opposite ends and having a longitudinal bore of substantially constant diameter extending between said ends, a hollow insert mounted in said bore, being frictionally secured to said body member, and having an end portion protruding from one of said opposite ends, a pusher assembly having a bar member with an axially-oriented relief adjacent said hollow insert, and means for propelling said pusher assembly against said insert, said bar member and said propelling means mounted in said bore in tandem coaxial relation with and for adjustably positioning said insert relative to said one of said opposite ends in fixed relation.
Claim 7
Dependent Claim
108 words
A tool comprising an elongated rigid body member having opposite ends and having a longitudinal bore of substantially constant diameter extending between said ends, a hollow insert mounted in said bore, being frictionally secured to said body member, and having an end portion protruding from one of said opposite ends, a pusher assembly having a bar member with an axially-oriented relief adjacent said hollow insert, and means for propelling said pusher assembly against said insert, said bar member and said propelling means mounted in said bore in tandem coaxial relation with and for adjustably positioning said insert relative to said one of said opposite ends in fixed relation.
Claim 8
Dependent Claim
42 words
The tool of claim 5 wherein said propelling means comprises a screw member mounted in said bore, said bore being threaded for cooperation with said screw member to the extent required to propel said insert past said one of said opposite ends.
Claim 9
Dependent Claim
88 words
A tool comprising a shank having an end, an enlarged handle mounted on said shank, a longitudinal bore extending through said shank and handle, a tubular flexible insert mounted in said bore for movement only in response to the application of force thereto and having an end portion proJecting from said shank''s end, a pusher assembly mounted in said bore and including a bar member and a propelling means in tandem coaxial relation with and for adjustably fixing the position of said insert relative to said shank''s end.
Claim 10
Dependent Claim
88 words
A tool comprising a shank having an end, an enlarged handle mounted on said shank, a longitudinal bore extending through said shank and handle, a tubular flexible insert mounted in said bore for movement only in response to the application of force thereto and having an end portion proJecting from said shank''s end, a pusher assembly mounted in said bore and including a bar member and a propelling means in tandem coaxial relation with and for adjustably fixing the position of said insert relative to said shank''s end.
Claim 11
Dependent Claim
24 words
The tool of claim 7 wherein said pusher assembly includes a relief in said bar member for acceptance of a fastener or the like.
Claim 12
Dependent Claim
23 words
The tool of claim 7 wherein said hollow insert is of a dimension greater than that of said bore thereby providing such securement.
References Cited (Backward Citations)
US1450414A
Cited
US1838973A
Cited
US2244047A
Cited
US2353559A
Cited
US2581659A
Cited
US2666201A
Cited
US2786203A
Cited
US2905034A
Cited
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 |