Patent US3938856A successfully refreshed from Google Patents.
Patent US3745737A successfully refreshed from Google Patents.
US3745737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spacer member for reinforcing rods in reinforced concrete construction
Assignee: Individual
•
Filing: 1971-11-15
•
Granted: 1973-07-17
•
Expires: 1991-11-15
Abstract
Abstract A profiled member, such as an essentially elongated cylinder, is formed with at least two spacially relatively offset openings therein, the openings being of such size to receive reinforcing rods, and formed to engage the rods and interlock therewith. The profiled members are open at both ends to permit pouring of cement therethrough.
Inventors
- 👤 A Keller
- 👤 H Keller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:09
CPC Classifications
E; E04; E04C; E04C5/00; E04C5/16; E04C5/20
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
188 words
Spacer member for reinforcing rods to space the rods from the wall of a pouring form comprising a profiled body having at least two pairs of transversely directed openings therein (22, 23; 24, 25), each adapted to receive a reinforcing rod therein, the openings being formed, with respect to the rods, to engage and interlock with the rods, the bottoms of the openings of one pair being at different level with respect to the bottom of the opening of the other pair, the inside edges (26, 27; 26'', 27'') of the openings extending beyond the bottom to form longitudinally extending slits (28, 29; 28'', 29'') continuing the opening and extending the opening beyond the bottom, leaving a ridge (30, 30'') therebetween, the rIdge forming a bearing surface for the reinforcing rods, the ridges at the bottoms of one pair of openings being at different longitudinal level with respect to the ridges at the bottoms of the other pairs of openings; cross-connecting webs (41) formed transversely of the hollow body (21); and ribs (42, 43) formed on the walls of the hollow body and merging with said webs (41).
Claim 2
Dependent Claim
188 words
Spacer member for reinforcing rods to space the rods from the wall of a pouring form comprising a profiled body having at least two pairs of transversely directed openings therein (22, 23; 24, 25), each adapted to receive a reinforcing rod therein, the openings being formed, with respect to the rods, to engage and interlock with the rods, the bottoms of the openings of one pair being at different level with respect to the bottom of the opening of the other pair, the inside edges (26, 27; 26'', 27'') of the openings extending beyond the bottom to form longitudinally extending slits (28, 29; 28'', 29'') continuing the opening and extending the opening beyond the bottom, leaving a ridge (30, 30'') therebetween, the rIdge forming a bearing surface for the reinforcing rods, the ridges at the bottoms of one pair of openings being at different longitudinal level with respect to the ridges at the bottoms of the other pairs of openings; cross-connecting webs (41) formed transversely of the hollow body (21); and ribs (42, 43) formed on the walls of the hollow body and merging with said webs (41).
Claim 3
Dependent Claim
42 words
Spacer member according to claim 11, wherein the edge surfaces (26, 27; 26'', 27'') defining the openings have necked-in projections extending slightly towards each other to form a narrowed neck portion (35, 35'') in the region of the mouth of the openings.
Claim 4
Dependent Claim
19 words
Spacer member according to claim 1, wherein the webs are located at the level of oppositely located ridges (30).
Claim 5
Dependent Claim
25 words
Spacer member according to claim 1, wherein the ribs (43) extend longitudinally of the body to substantially the terminal end of the lower surface thereof.
Claim 6
Dependent Claim
30 words
Spacer member according to claim 1, wherein the mouths of the openings are divergent and enlarged to about the diameter of the rods to be received by the spacer member.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |