US4016654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Range finder
Assignee: Lawrence Peska Associates Inc
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Filing: 1976-01-26
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Granted: 1977-04-12
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Expires: 1996-01-26
Abstract
Abstract A range finder is disclosed comprising a tube having an eye opening, an object opening and a sight divided into sections, each section having a sight line or a plurality of sight lines with designated ranges next to each sight line. This arrangement of sight lines allows for the placement of a plurality of easily readable ranges on a relatively small sight. The clustering of sight lines one on top of the other the full height of the sight makes it difficult to use a range finder without some eye strain. The arrangement of sight lines disclosed in the present invention obviates this problem but still allows for the placement of a sufficient number of sight lines so that the range finder is effective over a wide range of distances.
Inventors
- 👤 Patrick Tepedino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:55
CPC Classifications
G; G01; G01C; G01C3/00; G01C3/22
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
279 words
A range finder comprising a tube having an eye end and an object end, both ends of said tube being open for visual sighting therethrough, sight means mounted in the object end of said tube, said sight means comprising a plurality of base lines transverse to the longitudinal axis of said tube a fixed distance from said eye opeing, each base line also intersecting one another, thereby dividing said sight means into sections, each section having a plurality of sight lines parallel to and extending above their respective base lines, readable indicia for designating the range of an object adjacent said sight lines each of said sight lines in each of said sections representing a different range, said indicia being parallel and readable with respect to the base line subtending the section in which said indicia are positioned, said sight lines being spaced above said base line by a factor comprising the tangent of an object of known dimension being sighted and the distance of such object to said eye opening, each sight line in each section being spaced a different distance from each other and from their respective base lines said parallel sight lines being arranged in each section so that said sight lines indicating relatively short distances are mixed with the sight line indicating longer distances to thereby avoid crowding of said sight lines and confusion of said indicia adjacent said sight lines, said tube being rotatable on its longitudinal axis for aligning the sight lines and indicia of each section with a distant object so that said object may be sighted through one base line and sight line and the indicia adjacent such sight line read.
Claim 2
Dependent Claim
279 words
A range finder comprising a tube having an eye end and an object end, both ends of said tube being open for visual sighting therethrough, sight means mounted in the object end of said tube, said sight means comprising a plurality of base lines transverse to the longitudinal axis of said tube a fixed distance from said eye opeing, each base line also intersecting one another, thereby dividing said sight means into sections, each section having a plurality of sight lines parallel to and extending above their respective base lines, readable indicia for designating the range of an object adjacent said sight lines each of said sight lines in each of said sections representing a different range, said indicia being parallel and readable with respect to the base line subtending the section in which said indicia are positioned, said sight lines being spaced above said base line by a factor comprising the tangent of an object of known dimension being sighted and the distance of such object to said eye opening, each sight line in each section being spaced a different distance from each other and from their respective base lines said parallel sight lines being arranged in each section so that said sight lines indicating relatively short distances are mixed with the sight line indicating longer distances to thereby avoid crowding of said sight lines and confusion of said indicia adjacent said sight lines, said tube being rotatable on its longitudinal axis for aligning the sight lines and indicia of each section with a distant object so that said object may be sighted through one base line and sight line and the indicia adjacent such sight line read.
Claim 3
Dependent Claim
18 words
The range finder of claim 1 where said base lines intersect at the longitudinal axis of said tube.
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) | 1980-04-11 | 1980-10-11 | 1981-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-11 | 1984-10-11 | 1985-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-11 | 1988-10-11 | 1989-04-12 | $7700.00 | Window Closed / Lapsed |