Patent US4151735A successfully refreshed from Google Patents.
US4151735A
Expired / Lapsed
US
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Recoil assembly for electromagnetic high energy impact apparatus
Assignee: Boeing Co
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Filing: 1977-09-28
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Granted: 1979-05-01
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Expires: 1997-09-28
Abstract
Abstract An apparatus for utilizing electromagnetic energy for producing high impact forces by means of a ram propelled against a work piece. The work center of the apparatus includes a ram assembly of bolted construction having a hollow ram shaft, which ram assembly includes a gap between opposing conductive surfaces including associated fastener screws of driving disc and ram shaft of at least about five-sixteenths of an inch. A solid mass recoil assembly provides integral housing and recoil mass, enabling aerostatic bearing functioning, and also lowers shock and vibration levels to operator and equipment.
Inventors
- 👤 Arthur W. McDermott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:35
CPC Classifications
B; B21; B21J; B21J7/00; B21J7/20; B21J7/22; B21J7/30; B21J15/00; B21J15/10; B21J15/16; B21J15/24; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49803; Y10T29/53; Y10T29/53709; Y10T29/5377; Y10T29/53774
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
150 words
A recoil assembly for use in an electromagnetic work tool housing enclosure having: an electromagnetic high energy pulse coil including a working face; a ram assembly including a conductive driving plate, and aerostatic bearing means comprising opposing surfaces of said working face and said conductive driving plate; the improvement wherein said recoil assembly comprises a solid metallic mass disposed between the inner surface of a rear wall of said housing and a major surface of said electromagnetic high energy pulse coil opposite said working face, said solid metallic mass having the front surface thereof facing said major surface of said electromagnetic high energy pulse coil opposite said working face machined perpendicular to the centerline of said ram assembly, thereby holding the working face of said electromagnetic high energy pulse coil perpendicular to said centerline of said ram assembly and maintaining substantially parallel the opposing surfaces of said aerostatic bearing means.
Claim 2
Dependent Claim
150 words
A recoil assembly for use in an electromagnetic work tool housing enclosure having: an electromagnetic high energy pulse coil including a working face; a ram assembly including a conductive driving plate, and aerostatic bearing means comprising opposing surfaces of said working face and said conductive driving plate; the improvement wherein said recoil assembly comprises a solid metallic mass disposed between the inner surface of a rear wall of said housing and a major surface of said electromagnetic high energy pulse coil opposite said working face, said solid metallic mass having the front surface thereof facing said major surface of said electromagnetic high energy pulse coil opposite said working face machined perpendicular to the centerline of said ram assembly, thereby holding the working face of said electromagnetic high energy pulse coil perpendicular to said centerline of said ram assembly and maintaining substantially parallel the opposing surfaces of said aerostatic bearing means.
Claim 3
Dependent Claim
18 words
The invention according to claim 1 wherein said solid metallic mass has a weight of about 58 pounds.
Claim 4
Dependent Claim
15 words
The invention according to claim 1 wherein said solid metallic mass comprises lead or steel.
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) | 1982-04-30 | 1982-10-30 | 1983-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-30 | 1986-10-30 | 1987-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-30 | 1990-10-30 | 1991-05-01 | $7700.00 | Window Closed / Lapsed |