Patent US3132448A successfully refreshed from Google Patents.
US3132448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chair for concrete reinforcing rods
Assignee: Colorado Building Supply Co
•
Filing: 1958-05-08
•
Granted: 1964-05-12
•
Expires: 1978-05-08
Abstract
No abstract record available.
Inventors
- 👤 John W Phillips
- 👤 Russell G Harrop
- 👤 Roy R Waugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:20
CPC Classifications
E; E04; E04C; E04C5/00; E04C5/16; E04C5/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
174 words
A REINFORCING BAR CHAIR FOR USE IN CONCRETE MATS OR THE LIKE, COMPRISING TWO UPRIGHT LEG PORTIONS INTERCONNECTED AT THEIR UPPER ENDS BY A GENERALLY U-SHAPED SADDLE PORTION FORMED BY TWO SPACED SIDE PORTIONS AND A CONNECTING BOTTOM PORTION DEFINING A PLANE, EACH LEG HAVING AN EXTENDED BASE PORTION DISPOSED IN A SUBSTANTIALLY HORIZONTAL DIRECTION IN GENERALLY PARALLEL RELATION TO THE OTHER BASE PORTION AND DIRECTED OPPOSITELY TO THE OTHER, THE PLANE OF SAID SADDLE PORTION BEING AT AN ACUTE ANGLE TO SAID PARALLEL BASE PORTIONS, THE BOTTOM PORTION OF SAID SADDLE BEING SUBSTANTIALLY FLAT AND OF SUCH LENGTH THAT A REINFORCING BAR ADAPTED TO BE SEATED THEREIN WITH ITS LENGTHWISE AXIS PARALLEL TO SAID BASE PORTION WILL BE ENGAGED BY THE SAID SIDES OF SAID SADDLE PORTION, AND SAID CHAIR BEING ADAPTED FOR BODILY ROTATION TO POSITION SAID BASE PORTIONS IN A NON-PARALLEL RELATION TO SAID BAR, THEREBY MOVING SAID BAR OUT OF ENGAGEMENT WITH THE SIDES OF THE SADDLE PORTION AND INCREASING THE RESISTANCE OF A CHAIR AND SUPPORTED BAR TO TIPPING.
Claim 2
Dependent Claim
174 words
A REINFORCING BAR CHAIR FOR USE IN CONCRETE MATS OR THE LIKE, COMPRISING TWO UPRIGHT LEG PORTIONS INTERCONNECTED AT THEIR UPPER ENDS BY A GENERALLY U-SHAPED SADDLE PORTION FORMED BY TWO SPACED SIDE PORTIONS AND A CONNECTING BOTTOM PORTION DEFINING A PLANE, EACH LEG HAVING AN EXTENDED BASE PORTION DISPOSED IN A SUBSTANTIALLY HORIZONTAL DIRECTION IN GENERALLY PARALLEL RELATION TO THE OTHER BASE PORTION AND DIRECTED OPPOSITELY TO THE OTHER, THE PLANE OF SAID SADDLE PORTION BEING AT AN ACUTE ANGLE TO SAID PARALLEL BASE PORTIONS, THE BOTTOM PORTION OF SAID SADDLE BEING SUBSTANTIALLY FLAT AND OF SUCH LENGTH THAT A REINFORCING BAR ADAPTED TO BE SEATED THEREIN WITH ITS LENGTHWISE AXIS PARALLEL TO SAID BASE PORTION WILL BE ENGAGED BY THE SAID SIDES OF SAID SADDLE PORTION, AND SAID CHAIR BEING ADAPTED FOR BODILY ROTATION TO POSITION SAID BASE PORTIONS IN A NON-PARALLEL RELATION TO SAID BAR, THEREBY MOVING SAID BAR OUT OF ENGAGEMENT WITH THE SIDES OF THE SADDLE PORTION AND INCREASING THE RESISTANCE OF A CHAIR AND SUPPORTED BAR TO TIPPING.
References Cited (Backward Citations)
US992430A
Cited
US1139987A
Cited
US1380332A
Cited
US1850400A
Cited
US2324719A
Cited
US2349399A
Cited
US2407249A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-12 | 1967-11-11 | 1968-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-12 | 1971-11-11 | 1972-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-12 | 1975-11-11 | 1976-05-12 | $7700.00 | Window Closed / Lapsed |