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US3868207A
Expired / Lapsed
US
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Apparatus for producing precast concrete members
Assignee: Shimizu Construction Co Ltd
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Filing: 1973-01-11
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Granted: 1975-02-25
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Expires: 1993-01-11
Abstract
Abstract An apparatus for producing precast concrete members which is efficient, mobile and cost saving, and comprises at least: a curing chamber having openings on opposite sides, each of which sides faces a respective concrete placing section; the curing chamber having a plurality of horizontal motion transferring means to support and transfer form members leaving predetermined distance apart, concrete placing sections in which necessary work for concrete placing is carried out, the placing sections are provided with horizontal motion transferring means, and a predetermined number of precast concrete form members which are disposed and separately move horizontally and between said curing chamber and said concrete placing sections.
Inventors
- 👤 Tadao Otsuki
- 👤 Tokishige Tsuboi
- 👤 Masashi Sudo
- 👤 Hidefumi Matsuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:46
CPC Classifications
B; B28; B28B; B28B15/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
371 words
Apparatus for producing precast concrete members, comprising: a curing chamber in which concrete is to be cured; concrete curing means in said curing chamber; said curing chamber having a first side facing toward a concrete placing section; and a second side facing toward a second concrete placing section; a first concrete placing section in which work for concrete placing is performed; said first concrete placing section having a first side facing toward said curing chamber first side; a second concrete placing section in which work for concrete placing is performed and which has a respective second side facing toward said curing chamber second side; a first plurality of precast concrete form members for receiving and shaping concrete; first horizontal transfer means for said first form members; said first form members being connected to said first horizontal transfer means so that each said first form member is individually movable by its said first transfer means; said first horizontal transfer means extending into and between said curing chamber and said first concrete placing section; said first form members being reciprocally movable between said first concrete placing section and said curing chamber; said first horizontal transfer means being adapted for enabling such reciprocal movement of said first form members; a second plurality of precast concrete form members for receiving and shaping concrete; second horizontal transfer means for said second form members; said second form members being connected to said second horizontal transfer means so that each said second form member is individually movable by said second transfer means; said second horizontal transfer means extending into and between said curing chamber and said second concrete placing section; said second form members being reciprocally movable between said second concrete placing section and said curing chamber; said second horizontal transfer means being adapted for enabling such reciprocal movement of said second plurality of form members; said first and second horizontal transfer means and the respective said form members connected thereto are arranged in two respective pluralities of vertically stacked, spaced apart layers; said layers of the said first horizontal transfer means and their respective said form members alternate in the vertical stacking with said layers of said second horizontal transfer means and their respective said form members.
Claim 2
Dependent Claim
371 words
Apparatus for producing precast concrete members, comprising: a curing chamber in which concrete is to be cured; concrete curing means in said curing chamber; said curing chamber having a first side facing toward a concrete placing section; and a second side facing toward a second concrete placing section; a first concrete placing section in which work for concrete placing is performed; said first concrete placing section having a first side facing toward said curing chamber first side; a second concrete placing section in which work for concrete placing is performed and which has a respective second side facing toward said curing chamber second side; a first plurality of precast concrete form members for receiving and shaping concrete; first horizontal transfer means for said first form members; said first form members being connected to said first horizontal transfer means so that each said first form member is individually movable by its said first transfer means; said first horizontal transfer means extending into and between said curing chamber and said first concrete placing section; said first form members being reciprocally movable between said first concrete placing section and said curing chamber; said first horizontal transfer means being adapted for enabling such reciprocal movement of said first form members; a second plurality of precast concrete form members for receiving and shaping concrete; second horizontal transfer means for said second form members; said second form members being connected to said second horizontal transfer means so that each said second form member is individually movable by said second transfer means; said second horizontal transfer means extending into and between said curing chamber and said second concrete placing section; said second form members being reciprocally movable between said second concrete placing section and said curing chamber; said second horizontal transfer means being adapted for enabling such reciprocal movement of said second plurality of form members; said first and second horizontal transfer means and the respective said form members connected thereto are arranged in two respective pluralities of vertically stacked, spaced apart layers; said layers of the said first horizontal transfer means and their respective said form members alternate in the vertical stacking with said layers of said second horizontal transfer means and their respective said form members.
Claim 3
Dependent Claim
32 words
The apparatus of claim 1, wherein said curing chamber and said second sides are on opposite sides thereof and said concrete placing sections are disposed on opposite sides of said curing chamber.
Claim 4
Dependent Claim
65 words
The apparatus of claim 1, wherein each said layer of each said horizontal transfer means is comprised of the two horizontal flanges of a channel shaped, elongated rail element, which said flanges are arranged one above the other, whereby each said channel shaped rail element defines two vertically stacked, relatively closely spaced rails; on each said rail is supported a respective said concrete form member.
Claim 5
Dependent Claim
35 words
The apparatus of claim 3, wherein said rail element of each said horizontal transfer means layer is spaced from the neighboring said layer of that said horizontal transfer means about the height of a man.
Claim 6
Dependent Claim
23 words
The apparatus for producing precast concrete members of claim 1, wherein the said alternation of said layers occurs only in said curing chamber.
Claim 7
Dependent Claim
40 words
The apparatus for producing precast concrete members of claim 1, wherein said horizontal transfer means comprises means for individually, reciprocally, horizontally moving said form members of both said pluralities between said curing chamber and the respective said concrete placing section.
Claim 8
Dependent Claim
38 words
The apparatus for producing precast concrete members of claim 1, wherein said layers of each said horizontal transfer means are spaced from the neighboring said layer of that said horizontal transfer means about the height of a man.
Claim 9
Dependent Claim
33 words
The apparatus for producing precast concrete members of claim 3, in which said form members each comprise a movable truck; said trucks having engaging means which engage the respective said horizontal transfer means.
Claim 10
Dependent Claim
239 words
Apparatus for producing precast concrete members, comprising: a curing chamber in which concrete is to be cured; concrete curing means in said curing chamber; said curing chamber having a side facing toward a concrete placing section; a concrete placing section in which work for concrete placing is performed; said concrete placing section having a side facing toward said curing chamber side; a plurality of precast form members for receiving and shaping concrete; horizontal transfer means for said form members; said form members being connected to said horizontal transfer means so that each said form member is individually movable by said transfer means; said horizontal transfer means extending into and between said curing chamber and said concrete placing section; said form members being reciprocally movable between said concrete placing section and said curing chamber; said horizontal transfer means being adapted for enabling such reciprocal movement of said form members; said horizontal transfer means comprises horizontal rails which are engaged by said trucks and along which said trucks are movable; said form members each comprise a movable truck; said trucks having engaging means which engage the respective said horizontal rails; each said horizontal rail is defined as one of the two flanges of a channel shaped, elongated rail element, which flanges are arranged one above the other, whereby each channel shaped rail element defines two vertically stacked, relatively closely spaced said rails; on each said rail is a respective said truck.
Claim 11
Dependent Claim
239 words
Apparatus for producing precast concrete members, comprising: a curing chamber in which concrete is to be cured; concrete curing means in said curing chamber; said curing chamber having a side facing toward a concrete placing section; a concrete placing section in which work for concrete placing is performed; said concrete placing section having a side facing toward said curing chamber side; a plurality of precast form members for receiving and shaping concrete; horizontal transfer means for said form members; said form members being connected to said horizontal transfer means so that each said form member is individually movable by said transfer means; said horizontal transfer means extending into and between said curing chamber and said concrete placing section; said form members being reciprocally movable between said concrete placing section and said curing chamber; said horizontal transfer means being adapted for enabling such reciprocal movement of said form members; said horizontal transfer means comprises horizontal rails which are engaged by said trucks and along which said trucks are movable; said form members each comprise a movable truck; said trucks having engaging means which engage the respective said horizontal rails; each said horizontal rail is defined as one of the two flanges of a channel shaped, elongated rail element, which flanges are arranged one above the other, whereby each channel shaped rail element defines two vertically stacked, relatively closely spaced said rails; on each said rail is a respective said truck.
Claim 12
Dependent Claim
27 words
The apparatus for producing precast concrete members of claim 9, wherein said horizontal transfer means comprises means for reciprocally moving said trucks along the respective said rails.
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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) | 1978-02-24 | 1978-08-26 | 1979-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-24 | 1982-08-26 | 1983-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-24 | 1986-08-26 | 1987-02-25 | $7700.00 | Window Closed / Lapsed |