US3802097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dna model kit
Assignee: OR DA IND Ltd
•
Filing: 1972-10-16
•
Granted: 1974-04-09
•
Expires: 1992-10-16
Abstract
Abstract A kit for constructing a DNA (deoxyribonucleic acid) molecule, and for demonstrating replication during mitosis, comprises, a plurality of groups of chips, each group designating a component of the DNA molecule, interlocking connectors carried by the chips enabling them to be snap-fitted into others according to certain predetermined combinations, a common base supporting the lower end of the DNA molecule and carrying a supporting bar supporting the upper end of the DNA molecule, the supporting bar being rotatable 180* or 360* and lockable in the rotated condition. The common base carries four equally-spaced supporting elements, such that a double-strand molecule may first be constructed by supporting the lower ends of the strands on the two middle elements, and then replication by mitosis may be demonstrated by splitting the molecule into two strands, pivoting the two strands supported on the middle elements, so that each faces one of the remaining two elements, and then constructing two double-strand molecules from the two strands.
Inventors
- 👤 A Gluck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:50
CPC Classifications
G; G09; G09B; G09B23/00; G09B23/26
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
221 words
A kit for constructing a double-strand chemical molecule having a twist therein, and for demonstrating its replication by mitosis, comprising: a plurality of groups of chips, each group designating a component of the molecule; interlocking connectors carried by the chips enabling them to be detachably assembled together according to certain predetermined combinations, each combination including two molecular strands; a plurality of lower supporting elements for supporting the lower ends of the molecular strands; and a plurality of upper supporting elements for supporting the upper ends of the molecular strands; one of said plurality of supporting elements being rotatably mounted about a vertical axis for applying a twist to the molecular strands supported thereby; characterized in that said plurality of lower supporting elements are supported on a common base, and that there are at least four of such lower supporting elements equally spaced from each other on the common base, so that a double-strand molecule may first be constructed by supporting the lower ends of the strands on the middle two lower supporting elements, and then replication by mitosis may be demonstrated by splitting the molecule into two strands, pivoting the two strands supported on the middle lower supporting elements so that each faces one of the remaining two lower supporting elements, and then constructing from the two strands two double-strand molecules.
Claim 2
Dependent Claim
221 words
A kit for constructing a double-strand chemical molecule having a twist therein, and for demonstrating its replication by mitosis, comprising: a plurality of groups of chips, each group designating a component of the molecule; interlocking connectors carried by the chips enabling them to be detachably assembled together according to certain predetermined combinations, each combination including two molecular strands; a plurality of lower supporting elements for supporting the lower ends of the molecular strands; and a plurality of upper supporting elements for supporting the upper ends of the molecular strands; one of said plurality of supporting elements being rotatably mounted about a vertical axis for applying a twist to the molecular strands supported thereby; characterized in that said plurality of lower supporting elements are supported on a common base, and that there are at least four of such lower supporting elements equally spaced from each other on the common base, so that a double-strand molecule may first be constructed by supporting the lower ends of the strands on the middle two lower supporting elements, and then replication by mitosis may be demonstrated by splitting the molecule into two strands, pivoting the two strands supported on the middle lower supporting elements so that each faces one of the remaining two lower supporting elements, and then constructing from the two strands two double-strand molecules.
Claim 3
Dependent Claim
52 words
A kit as defined in claim 1, wherein said lower supporting elements comprise tightly-coiled vertical springs to be received in sockets in the lowermost chips of the molecular strands, and wherein said upper supporting elements are in the form of openings to receive pins in the uppermost chips of the molecular strands.
Claim 4
Dependent Claim
97 words
A kit as defined in claim 1, wherein the kit includes a frame having a horizontal beam supported by and over said common base, said horizontal beam including at least one opening therethrough; and wherein said plurality of upper supporting elements are carried on a horizontal bar having a vertical arm passing through said opening in the horizontal beam of the supporting frame, said vertical arm being rotatable in said opening to apply the twist to the molecular strands and being fixable in a predetermined position within the opening to fix the twist in the molecular strands.
Claim 5
Dependent Claim
82 words
A kit as defined in claim 3, wherein said horizontal beam of the supporting frame includes three equally-spaced openings, and said kit includes at least two of said horizontal bars, the middle opening in the beam being used for receiving the vertical arm of one horizontal bar to construct the double-strand molecule, and the remaining two openings in the beam being used for receiving the vertical arms of two horizontal bars to construct the two double-strand molecules when demonstrating replication by mitosis.
Claim 6
Dependent Claim
219 words
A kit as defined in claim 1 for constructing a DNA (deoxyribonucleic acid) molecule, wherein said plurality of groups of chips designate components of the DNA molecule and include a group of S-chips each designating the sugar chain, a group of P-chips each designating the phosphate chain, a group of T-chips each designating the thymine base, a group of C-chips each designating the cytosine base, a group of A-chips each designating the adenine base, and a group of G-chips each designating the guanine base; the S-chips and the P-chips including first interlocking connectors enabling a P-chip to be attached at either end of an S-chip and to be pivoted with respect thereto along a first pivotable axis extending lengthwise of the S-chip; the S-chip and the four base-chips including second interlocking connectors enabling any one of thE base-chips to be attached at one end thereof to a mid-portion of the S-chip and to be pivoted with respect thereto along a second pivotable axis extending widthwise of the S-chip and at right angles to said first pivotable axis; the four base-chips including third interlocking connectors at their ends opposite to said one end thereof enabling said opposite end of a T-chip to be attached to an A-chip, and said opposite end of a C-chip to be attached to a G-chip.
Claim 7
Dependent Claim
34 words
A kit as defined in claim 5, wherein said first interlocking pivotable connections comprise sockets formed at both ends of the S-chips and adapted to receive pins carried at both ends of the P-chips.
Claim 8
Dependent Claim
39 words
A kit as defined in claim 5, wherein said second interlocking pivotable connection comprise further sockets formed in said mid-portion of the S-chips adapted to receive pins carried at said one end of each of the four base chips.
Claim 9
Dependent Claim
48 words
A kit as defined in claim 5, wherein said third interlocking connections comprise two pins each terminating in a ball carried at said opposite ends of the T-chips and A-chips, and three pins each terminating in a ball carried at said opposite ends of the C-chips and G-chips.
Claim 10
Dependent Claim
86 words
A kit as defined in claim 5, wherein the S-chips are each formed with two opposed short sides joined at one end by a long straight side at right angles to the opposed short sides, and joined at the opposite end by two further sides forming an obtuse angle juncture with each other at said mid-portion of the S-chip, said first interlocking connectors of the S-chips being at said opposed short sides, and said second interlocking connectors of the S-chips being at said obtuse angle juncture.
Claim 11
Dependent Claim
50 words
A kit as defined in claim 9 wherein said P-chips are each in the form of a square; said T-chips and C-chips are each in the form of a hexagon; and said A-chips and G-chips are each in the form of a hexagon joined at one side to a pentagon.
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) | 1977-04-08 | 1977-10-08 | 1978-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-08 | 1981-10-08 | 1982-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-08 | 1985-10-08 | 1986-04-09 | $7700.00 | Window Closed / Lapsed |