US3870268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shoring apparatus
Assignee: Individual
•
Filing: 1973-04-30
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Granted: 1975-03-11
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Expires: 1993-04-30
Abstract
Abstract A shoring apparatus has an elongate support post having two ends. One of the ends of the support post is cylindrical while the other end of the support post is provided along its length with spaced apertures. A first telescoping sleeve surrounds the one end of the support post and is slidably mounted on the same, the sleeve having an engaging member or tooth which is adapted to selectively engage and be secured in locking relationship by one of the steps of a stepped rest collar fixed on the support post. The steps on the rest collar are incrementally axially spaced from each other about the periphery of said support post. A second telescoping sleeve has an apertured end and is slidably mounted on the other end of the support post to permit alignment of its aperture with one of the spaced apertures of the support post. A pin is removably receivable in respective aligned apertures of the second sleeve and the support post to prevent relative axial movement therebetween. The distance between each of the apertures in the support post represent a distance approximately equal to the totality of steps of the rest collar. In this manner, the overall length of the shoring apparatus can be adjusted coarsely by aligning respective apertures in the support post with the aperture in the second sleeve, and can be adjusted finely by selectively engaging the tooth of the first sleeve with one of the steps of the rest collar.
Inventors
- 👤 Sam Larkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:38
CPC Classifications
E; E04; E04G; E04G25/00; E04G25/04; E04G25/06; E04G25/061; E04G25/063; E04G25/066; E04G25/068; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32254; Y10T403/32426; Y10T403/32442; Y10T403/32451
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
266 words
Shoring apparatus comprising a support post; a first telescoping sleeve slidably mounted on one end of said support post; first incremental step means cooperating with said support post and said first telescoping sleeve for selectively locking the relative positions therebetween in one of a first plurality of discrete steps; a second telescoping sleeve slidably mounted on the other end of said support post; second incremental stop means cooperating with said support post and said second telescoping sleeve for selectively locking the relative positions therebetween in a second plurality of discrete steps, each of the steps of said second plurality of steps being substantially greater than each of the steps of said first plurality of steps, whereby the overall length of the shoring apparatus can be adjusted finely by adjusting said first incremental stop means, and can be adjusted coarsely by adjusting said second incremental stop means; an elongate member mounted coaxially on said second telescoping sleeve for slidable movement relative to the latter, one of said elongate member and said second telescoping sleeve being slotted; and a release slide slidably passing through the slot in said elongate member and said second telescoping sleeve, said release slide being provided with thicker and thinner portions which can be selectively positioned within said slot, whereby insertion of the thicker portion in said slot causes the overall length of the shoring apparatus to increase, and insertion of the thinner portion into said slot causes the overall length of the shoring apparatus to decrease in length to thereby facilitate removal of the shoring apparatus while a load is still applied thereto.
Claim 2
Dependent Claim
266 words
Shoring apparatus comprising a support post; a first telescoping sleeve slidably mounted on one end of said support post; first incremental step means cooperating with said support post and said first telescoping sleeve for selectively locking the relative positions therebetween in one of a first plurality of discrete steps; a second telescoping sleeve slidably mounted on the other end of said support post; second incremental stop means cooperating with said support post and said second telescoping sleeve for selectively locking the relative positions therebetween in a second plurality of discrete steps, each of the steps of said second plurality of steps being substantially greater than each of the steps of said first plurality of steps, whereby the overall length of the shoring apparatus can be adjusted finely by adjusting said first incremental stop means, and can be adjusted coarsely by adjusting said second incremental stop means; an elongate member mounted coaxially on said second telescoping sleeve for slidable movement relative to the latter, one of said elongate member and said second telescoping sleeve being slotted; and a release slide slidably passing through the slot in said elongate member and said second telescoping sleeve, said release slide being provided with thicker and thinner portions which can be selectively positioned within said slot, whereby insertion of the thicker portion in said slot causes the overall length of the shoring apparatus to increase, and insertion of the thinner portion into said slot causes the overall length of the shoring apparatus to decrease in length to thereby facilitate removal of the shoring apparatus while a load is still applied thereto.
Claim 3
Dependent Claim
266 words
Shoring apparatus comprising a support post; a first telescoping sleeve slidably mounted on one end of said support post; first incremental step means cooperating with said support post and said first telescoping sleeve for selectively locking the relative positions therebetween in one of a first plurality of discrete steps; a second telescoping sleeve slidably mounted on the other end of said support post; second incremental stop means cooperating with said support post and said second telescoping sleeve for selectively locking the relative positions therebetween in a second plurality of discrete steps, each of the steps of said second plurality of steps being substantially greater than each of the steps of said first plurality of steps, whereby the overall length of the shoring apparatus can be adjusted finely by adjusting said first incremental stop means, and can be adjusted coarsely by adjusting said second incremental stop means; an elongate member mounted coaxially on said second telescoping sleeve for slidable movement relative to the latter, one of said elongate member and said second telescoping sleeve being slotted; and a release slide slidably passing through the slot in said elongate member and said second telescoping sleeve, said release slide being provided with thicker and thinner portions which can be selectively positioned within said slot, whereby insertion of the thicker portion in said slot causes the overall length of the shoring apparatus to increase, and insertion of the thinner portion into said slot causes the overall length of the shoring apparatus to decrease in length to thereby facilitate removal of the shoring apparatus while a load is still applied thereto.
Claim 4
Dependent Claim
266 words
Shoring apparatus comprising a support post; a first telescoping sleeve slidably mounted on one end of said support post; first incremental step means cooperating with said support post and said first telescoping sleeve for selectively locking the relative positions therebetween in one of a first plurality of discrete steps; a second telescoping sleeve slidably mounted on the other end of said support post; second incremental stop means cooperating with said support post and said second telescoping sleeve for selectively locking the relative positions therebetween in a second plurality of discrete steps, each of the steps of said second plurality of steps being substantially greater than each of the steps of said first plurality of steps, whereby the overall length of the shoring apparatus can be adjusted finely by adjusting said first incremental stop means, and can be adjusted coarsely by adjusting said second incremental stop means; an elongate member mounted coaxially on said second telescoping sleeve for slidable movement relative to the latter, one of said elongate member and said second telescoping sleeve being slotted; and a release slide slidably passing through the slot in said elongate member and said second telescoping sleeve, said release slide being provided with thicker and thinner portions which can be selectively positioned within said slot, whereby insertion of the thicker portion in said slot causes the overall length of the shoring apparatus to increase, and insertion of the thinner portion into said slot causes the overall length of the shoring apparatus to decrease in length to thereby facilitate removal of the shoring apparatus while a load is still applied thereto.
Claim 5
Dependent Claim
33 words
Shoring apparatus as defined in claim 1, wherein said thicker and thinner portions are joined by an incline, whereby slidable movement of said release slide from one position to the other is facilitated.
Claim 6
Dependent Claim
30 words
Shoring apparatus as defined in claim 2, wherein end plates are provided at each end of said release slide to prevent the latter from fully moving out from said slots.
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) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |