US4405111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interjoist support
Assignee: Individual
•
Filing: 1981-04-22
•
Granted: 1983-09-20
•
Expires: 2001-04-22
Abstract
Abstract An extensible rod-like support engages between oppossing surfaces of wall studs or ceiling joists and is formed of telescoping rod members that threadedly engage, one within the other. A tubular nut-driving wrench engages over a nut surface on one telescoping member enabling the use of a wrench to turn the member while another wrench is used to turn the other telescoping member, which has a non-round external surface.
Inventors
- 👤 Thomas C. Lennon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:10
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/02; E04C2003/026
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
112 words
An extensible support for spaning between spaced joists, studs and the like elements having opposed surfaces, which comprises: outer and inner telescopically extensible rod-like members having internal and external threads, respectively, threadedly engaging one another and each having a free outer end portion with threaded lag screw means affixed thereon for screwing into one of said elements, the pitch angles of the threads on said members and said lag screw means being such that rotation of either of said members relative to the other in a direction such as to extend said support rotates the lag screw means thereon in that direction which screws the lag screw means thereon into an element.
Claim 2
Dependent Claim
112 words
An extensible support for spaning between spaced joists, studs and the like elements having opposed surfaces, which comprises: outer and inner telescopically extensible rod-like members having internal and external threads, respectively, threadedly engaging one another and each having a free outer end portion with threaded lag screw means affixed thereon for screwing into one of said elements, the pitch angles of the threads on said members and said lag screw means being such that rotation of either of said members relative to the other in a direction such as to extend said support rotates the lag screw means thereon in that direction which screws the lag screw means thereon into an element.
Claim 3
Dependent Claim
14 words
An extensible support as claimed in claim 1, and nut flats on said members.
Claim 4
Dependent Claim
23 words
An extensible support as claimed in claim 2, the nut flats on the externally threaded member being on the outer end portion thereof.
Claim 5
Dependent Claim
48 words
An extensible support as claimed in claim 3, and a tubular nut-driving wrench engageable over said support, said wrench being freely rotatable and slidable over said outer member and having at one end an internal wrench surface drivingly engageable with the nut flats on the externally threaded member.
Claim 6
Dependent Claim
144 words
An extensible support for spanning between spaced joists, studs and the like elements having opposed surfaces, which comprises: outer and inner telescopically extensible rod-like members having internal and external threads respectively threadedly engaging one another and having free outer end portions with element-engaging means thereon for engaging the elements between which the support spans, whereby rotation of either of said members relative to the other in a direction such as to extend said support drives the element-engaging means thereon towards the elements, respectively, and nut flats on said members, the nut flats on the externally threaded member being on the outer end portion thereof, and a tubular nut-driving wrench engageable over said support, said wrench being freely rotatable and slidable over said outer member and having at one end an internal wrench surface drivingly engageable with the nut flats on the externally threaded member.
Claim 7
Dependent Claim
144 words
An extensible support for spanning between spaced joists, studs and the like elements having opposed surfaces, which comprises: outer and inner telescopically extensible rod-like members having internal and external threads respectively threadedly engaging one another and having free outer end portions with element-engaging means thereon for engaging the elements between which the support spans, whereby rotation of either of said members relative to the other in a direction such as to extend said support drives the element-engaging means thereon towards the elements, respectively, and nut flats on said members, the nut flats on the externally threaded member being on the outer end portion thereof, and a tubular nut-driving wrench engageable over said support, said wrench being freely rotatable and slidable over said outer member and having at one end an internal wrench surface drivingly engageable with the nut flats on the externally threaded member.
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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) | 1986-09-19 | 1987-03-21 | 1987-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-19 | 1991-03-21 | 1991-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-19 | 1995-03-21 | 1995-09-20 | $7700.00 | Window Closed / Lapsed |