US3901477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for making concrete buildings in accordance with slide molding techniques
Assignee: Individual
•
Filing: 1974-03-18
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Granted: 1975-08-26
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Expires: 1994-03-18
Abstract
Abstract This disclosure relates to apparatus for making concrete buildings in accordance with slide molding techniques comprising an upper pair of gripping jaws and a lower pair of gripping jaws, means between the upper and lower pair of gripping jaws for imparting relative reciprocal motion therebetween, each pair of gripping jaws being pivotally connected to a lever, means mounting each lever for pivoting motion to move the jaws of each pair of gripping jaws obliquely toward and away from each other to respectively clamp and unclamp the same relative to a vertical support, and spring means remote from each of the pivot mounting means for biasing at least one of the jaws of each of the pair of upper and lower gripping jaws toward the clamped position thereof relative to the vertical support.
Inventors
- 👤 Bernhard Ahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:56
CPC Classifications
E; E04; E04G; E04G11/00; E04G11/06; E04G11/20; E04G11/22; E04G11/24
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
175 words
Apparatus for making concrete buildings in accordance with slide molding systems comprising an upper pair of gripping jaws and a lower pair of gripping jaws, means between said upper and lower pair of gripping jaws for imparting relative reciprocal motion therebetween, each pair oF gripping jaws being pivotally connected at spaced points to one each of a pair of levers, means mounting each lever for pivotal movement about a fixed axis, each pair of gripping jaws and its associated lever defining a parallelogram linkage mechanism for disposing each pair of levers both parallel and obliquely relative to each other to define respective unclamped and clamped positions thereof, individual spring means connected to one of each of said pair of jaws for biasing the associated pair of jaws toward a position at which said levers are in the obliquely related positions thereof, and individual means for deactivating each spring means separately to permit the levers associated therewith to be moved by the associated spring means to their oblique position to thereby clamp a vertical support therebetween.
Claim 2
Dependent Claim
175 words
Apparatus for making concrete buildings in accordance with slide molding systems comprising an upper pair of gripping jaws and a lower pair of gripping jaws, means between said upper and lower pair of gripping jaws for imparting relative reciprocal motion therebetween, each pair oF gripping jaws being pivotally connected at spaced points to one each of a pair of levers, means mounting each lever for pivotal movement about a fixed axis, each pair of gripping jaws and its associated lever defining a parallelogram linkage mechanism for disposing each pair of levers both parallel and obliquely relative to each other to define respective unclamped and clamped positions thereof, individual spring means connected to one of each of said pair of jaws for biasing the associated pair of jaws toward a position at which said levers are in the obliquely related positions thereof, and individual means for deactivating each spring means separately to permit the levers associated therewith to be moved by the associated spring means to their oblique position to thereby clamp a vertical support therebetween.
Claim 3
Dependent Claim
57 words
The apparatus as defined in claim 1 wherein one jaw of each pair of gripping jaws includes a projection, and means locating each spring means relative to an associated projection for biasing its associated one jaw toward the oblique position of its associated levers at which the associated pair of jaws are in the clamped position thereof.
Claim 4
Dependent Claim
68 words
The apparatus as defined in claim 1 wherein each said deactivating means includes a crank arm, means mounting each said crank arm for pivotal motion, and each crank arm having means carried thereby offset from the pivot axis of its associated spring means to a position at which said links are in parallel relation to each other and the associated clamping jaws thereof are in their unclamped position.
Claim 5
Dependent Claim
74 words
The apparatus as defined in claim 2 wherein each said deactivating means includes a crank arm, means mounting each said crank arm for pivotal motion, and each crank arm having means carried thereby offset from the pivot axis of its associated crank arm for urging its associated spring means to a position at which said links are in parallel relation to each other and the associated clamping jaws thereof are in their unclamped position.
Claim 6
Dependent Claim
42 words
The apparatus as defined in claim 2 including a housing for each pair of levers, clamping jaws and their associated spring means, said housing having opposite walls, and said crank arm being mounted for said pivotal motion in said opposite housing walls.
Claim 7
Dependent Claim
20 words
The apparatus as defined in claim 5 wherein said deactivating means are located in each housing between said opposite walls.
Claim 8
Dependent Claim
42 words
The apparatus as defined in claim 3 including a housing for each pair of levers, clamping jaws and their associated spring means, said housing having opposite walls, and said crank arm being mounted for said pivotal motion in said opposite housing walls.
Claim 9
Dependent Claim
20 words
The apparatus as defined in claim 7 wherein said deactivating means are located in each housing between said opposite walls.
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) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |