US4568155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waterproof binoculars
Assignee: LIGHT KOKI CO Ltd
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Filing: 1982-01-22
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Granted: 1986-02-04
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Expires: 2002-01-22
Abstract
Abstract Waterproof binoculars of the central focus wheel-type having transfer bars coupled to focussing lens groups within the body tubes, with the transfer bars being simultaneously moved longitudinally by the co-action of a groove on each bar with a flange on a screw-threadingly mounted lead ring turned by a screw-threaded shaft. Each transfer bar is water-tightly sealed in its bore.
Inventors
- 👤 Fumio Shimizu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:01
CPC Classifications
G; G02; G02B; G02B23/00; G02B23/16; G02B23/18; G02B7/00; G02B7/02; G02B7/04; G02B7/06
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
215 words
A compact easily-assembled center-focusing waterproofed binoculars of the poro-prism type, comprising: two bodytubes, each having a coupling portion and an optical axis, both coupling portions being pivotably jointed for movement about a longitudinal axis parallel to both optical axes, each coupling portion having a step portion perpendicualr to the longitudinal axis and a bore in the step portion parallel to the longitudinal axis, each body tube housing at least one lens group shiftable along its optical axis for focusing; a pair of transfer bars, each slidably mounted in one of the bores and having opposite ends; means for water-tightly sealing each bar in its respective bore; means connecting one end of the respective transfer bar to the respective lens group for movement of the lens group along the optical axis; rotatable means aligned along the longitudinal axis moving both transfer bars simultaneously longitudinally, thereby moving the respective lens groups along the optical axes for focusing; each bodytube having a side with an opening therein; a relatively-large poro-type prism received through the opening and mounted in the bodytube after the respective transfer bar has been connected to its respective lens group; and water-tight means for closing the opening, said pair of transfer bars and said rotatable means being insertable as a preassembled unit into said binoculars.
Claim 2
Dependent Claim
215 words
A compact easily-assembled center-focusing waterproofed binoculars of the poro-prism type, comprising: two bodytubes, each having a coupling portion and an optical axis, both coupling portions being pivotably jointed for movement about a longitudinal axis parallel to both optical axes, each coupling portion having a step portion perpendicualr to the longitudinal axis and a bore in the step portion parallel to the longitudinal axis, each body tube housing at least one lens group shiftable along its optical axis for focusing; a pair of transfer bars, each slidably mounted in one of the bores and having opposite ends; means for water-tightly sealing each bar in its respective bore; means connecting one end of the respective transfer bar to the respective lens group for movement of the lens group along the optical axis; rotatable means aligned along the longitudinal axis moving both transfer bars simultaneously longitudinally, thereby moving the respective lens groups along the optical axes for focusing; each bodytube having a side with an opening therein; a relatively-large poro-type prism received through the opening and mounted in the bodytube after the respective transfer bar has been connected to its respective lens group; and water-tight means for closing the opening, said pair of transfer bars and said rotatable means being insertable as a preassembled unit into said binoculars.
Claim 3
Dependent Claim
78 words
The binoculars as claimed in claim 1 wherein each transfer bar has a groove in the other end thereof, and said rotatable means comprises a shaft mounted for only rotation and having screw threads thereon, a knob fixed on the shaft, and a lead ring having a radially extending flange and being screw-threadably mounted on the shaft, the flange co-acting with the groove in each transfer bar to simultaneously move both bars longitudinally upon rotation of the knob.
Claim 4
Dependent Claim
32 words
The binoculars as claimed in claim 2 wherein the knob has a depending circumferential extension which houses and covers the lead ring and portions of the transfer bars extending from the bores.
Claim 5
Dependent Claim
15 words
The binoculars as claimed in claim 1 wherein the means for connecting is a pin.
Claim 6
Dependent Claim
196 words
In a compact center-focussed waterproofed binoculars, the combination of a pair of non-rotatable transfer bars slidably received in respective bores formed in the binoculars, a pair of bodytubes, a shaftable lens group within each bodytube, each shiftable lens group including a frame, a pin connecting each frame to a respective transfer bar, and o-ring carried by each transfer bar within its respective bore, each transfer bar including an end portion extending beyond the bore and having a groove formed therein, an internally-threaded lead ring having a flange received in the respective grooves, an externally-threaded shaft received within the lead ring and supported for rotational movement only, a knob carried by the shaft, the knob having a depending circumferential extension covering the lead ring and the respective end portions of the transfer bars, each bodytube having an opening formed therein, a poro-type prism received through the opening and mounted in the bodytube after the transfer bar has been connected to its respective lens group, and a water-tight lid for closing the opening 5; said pair of transfer bars, said o-rings, said lead ring, said shaft and said knob being insertable as a preassembled unit into said binoculars.
Claim 7
Dependent Claim
196 words
In a compact center-focussed waterproofed binoculars, the combination of a pair of non-rotatable transfer bars slidably received in respective bores formed in the binoculars, a pair of bodytubes, a shaftable lens group within each bodytube, each shiftable lens group including a frame, a pin connecting each frame to a respective transfer bar, and o-ring carried by each transfer bar within its respective bore, each transfer bar including an end portion extending beyond the bore and having a groove formed therein, an internally-threaded lead ring having a flange received in the respective grooves, an externally-threaded shaft received within the lead ring and supported for rotational movement only, a knob carried by the shaft, the knob having a depending circumferential extension covering the lead ring and the respective end portions of the transfer bars, each bodytube having an opening formed therein, a poro-type prism received through the opening and mounted in the bodytube after the transfer bar has been connected to its respective lens group, and a water-tight lid for closing the opening 5; said pair of transfer bars, said o-rings, said lead ring, said shaft and said knob being insertable as a preassembled unit into said binoculars.
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) | 1989-02-03 | 1989-08-05 | 1990-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-02-03 | 1993-08-05 | 1994-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-02-03 | 1997-08-05 | 1998-02-04 | $7700.00 | Window Closed / Lapsed |