US4519680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Beam chopper for producing multiple beams
Assignee: Philip Morris USA Inc
•
Filing: 1982-11-05
•
Granted: 1985-05-28
•
Expires: 2002-11-05
Abstract
Abstract An apparatus is disclosed for chopping a beam of radiant energy into three or more pulse trains propagating in different directions. The apparatus includes a disc rotating in a plane normal to the incident beam, having a circular pattern of reflective and transmissive portions. The reflective portions include first and second sets of surfaces inclined respectively at first and second oblique angles to the plane of the disc, for reflecting energy in first and second directions.
Inventors
- 👤 Everett C. Grollimund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:39
CPC Classifications
B; B23; B23K; B23K26/00; B23K26/02; B23K26/06; B23K26/067; B23K26/0676
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
107 words
A beam chopper system comprising: a disc having an axis parallel to the path of an incident beam of radiation, said disc being rotatable about said axis; a circular locus on said disc for intercepting an incident beam of radiation and including a plurality of segments, each said segment comprising, in a predetermined order, a transmissive portion, a first reflective portion inclined at a first oblique angle to said axis for directing an incident beam in a first direction, and a second reflective portion inclined at a second oblique angle to said axis for directing an incident beam in a second direction distinct from said first direction.
Claim 2
Dependent Claim
107 words
A beam chopper system comprising: a disc having an axis parallel to the path of an incident beam of radiation, said disc being rotatable about said axis; a circular locus on said disc for intercepting an incident beam of radiation and including a plurality of segments, each said segment comprising, in a predetermined order, a transmissive portion, a first reflective portion inclined at a first oblique angle to said axis for directing an incident beam in a first direction, and a second reflective portion inclined at a second oblique angle to said axis for directing an incident beam in a second direction distinct from said first direction.
Claim 3
Dependent Claim
54 words
The system of claim 1, wherein each said segment comprises n-1 reflective portions in a predetermined order, n being a natural number greater than 2; each said reflective portion of a given segment being inclined at a different respective oblique angle to said axis, for directing an incident beam in a different respective direction.
Claim 4
Dependent Claim
27 words
The system of claim 1, further comprising beam trimmer means intercepting the path of at least one of the reflected beams, for imparting a predetermined shape thereto.
Claim 5
Dependent Claim
31 words
The system of claim 3, wherein said beam trimmer means comprises a beam dump having an aperture of said predetermined shape formed therein for passing the reflected beam in question therethrough.
Claim 6
Dependent Claim
16 words
The system of claim 1, wherein said predetermined order is the same for each said segment.
Claim 7
Dependent Claim
41 words
The system of claim 1, wherein said first reflective portions of said segments lie on the surface of a first conical geometric surface, and said second reflective portions of said segments lie on the surface of a second conical geometric surface.
References Cited (Backward Citations)
US2494440A
Cited
US2547623A
Cited
US3022704A
Cited
US2844648A
Cited
US3106642A
Cited
US3024365A
Cited
US3303739A
Cited
US3226527A
Cited
US3256524A
Cited
US3543183A
Cited
US3819277A
Cited
GB1400016A
Cited
US3826578A
Cited
GB1455327A
Cited
US3901601A
Cited
US3965327A
Cited
US3993402A
Cited
US3985420A
Cited
US4118619A
Cited
US4153369A
Cited
US4224497A
Cited
US4224498A
Cited
US4349719A
Cited
US4410785A
Cited
GB2027628A
Cited
GB2032323A
Cited
US4404454A
Cited
US4218606A
Cited
GB2032325A
Cited
FR2439643A1
Cited
EP0021165A1
Cited
US4404452A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-05-27 | 1988-11-26 | 1989-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-27 | 1992-11-26 | 1993-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-27 | 1996-11-26 | 1997-05-28 | $7700.00 | Window Closed / Lapsed |