Patent US3748795A successfully refreshed from Google Patents.
US3748795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Survey monuments of frangible sections
Assignee: BERNTSEN CAST PRODUCTS Inc
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Filing: 1972-02-24
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Granted: 1973-07-31
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Expires: 1992-02-24
Abstract
Abstract A light-weight extendable survey monument. The metal-alloy monument standard is made up of a plurality of integral undulating webs connecting top and base flanges and having a carrying handle formed in one of the webs. The webs have vertically spaced transverse lines of weakness formed therein. The monument has one or more permanent magnets, at least one which is positioned below the lowermost line of weakness. A cap is received on a threaded stud extending from the top end of the standard. Extension elements are provided for placement between the cap and standard for spacing the cap in extended relation on the standard. The base has a depending centering point.
Inventors
- 👤 P Berntsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:21
CPC Classifications
G; G01; G01C; G01C15/00; G01C15/02; G01C15/04; Y; Y10; Y10S; Y10S52/00; Y10S52/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
114 words
A light-weight aluminum-alloy survey monument comprising: a. an elongate standard having, 1. top and base flanges disposed substantially transverse to the longitudinal axis of the standard, 2. a plurality of longitudinally extending radially disposed integral webs connecting said top and base flanges, each of said webs being continuous between said top and base flanges and having an undulating shaped outer edge, the undulations of each web being in alternating phase relation with the undulations of each next adjacent web, and 3. a plurality of vertically spaced lines of weakness formed in said webs, b. a cap attached at the top of said standard, and c. at least one permanent magnet affixed to said standard.
Claim 2
Dependent Claim
114 words
A light-weight aluminum-alloy survey monument comprising: a. an elongate standard having, 1. top and base flanges disposed substantially transverse to the longitudinal axis of the standard, 2. a plurality of longitudinally extending radially disposed integral webs connecting said top and base flanges, each of said webs being continuous between said top and base flanges and having an undulating shaped outer edge, the undulations of each web being in alternating phase relation with the undulations of each next adjacent web, and 3. a plurality of vertically spaced lines of weakness formed in said webs, b. a cap attached at the top of said standard, and c. at least one permanent magnet affixed to said standard.
Claim 3
Dependent Claim
53 words
a plurality of longitudinally extending radially disposed integral webs connecting said top and base flanges, each of said webs being continuous between said top and base flanges and having an undulating shaped outer edge, the undulations of each web being in alternating phase relation with the undulations of each next adjacent web, and
Claim 4
Dependent Claim
53 words
a plurality of longitudinally extending radially disposed integral webs connecting said top and base flanges, each of said webs being continuous between said top and base flanges and having an undulating shaped outer edge, the undulations of each web being in alternating phase relation with the undulations of each next adjacent web, and
Claim 5
Dependent Claim
35 words
The light-weight aluminum-alloy survey monument as specified in claim 1 having an opening formed in one of said webs near the mid-portion of said standard providing a handle portion on said standard intermediate its ends.
Claim 6
Dependent Claim
33 words
a plurality of vertically spaced lines of weakness formed in said webs, b. a cap attached at the top of said standard, and c. at least one permanent magnet affixed to said standard.
Claim 7
Dependent Claim
33 words
a plurality of vertically spaced lines of weakness formed in said webs, b. a cap attached at the top of said standard, and c. at least one permanent magnet affixed to said standard.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |