US4318945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Underwater aquarium decoration assembly
Assignee: Penn-Plax Plastics Inc
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Filing: 1980-01-28
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Granted: 1982-03-09
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Expires: 2000-01-28
Abstract
Abstract A rock-like decorative assembly including a plurality of irregularly shaped shells each having side walls and a top wall, the outer surfaces of all said shells being mottled, at least one, integral first connector means formed on the inside of the top wall of each of said shells, one integral second connector means formed on the outside of the top wall of said shells, said first and second connector means being mateable to connect juxtaposed shells into a rock-like formation.
Inventors
- 👤 Jerome N. Goldman
- 👤 Marvin A. Goldman
- 👤 Gerald Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:48
CPC Classifications
A; A01; A01K; A01K63/00; A01K63/003; A01K63/006
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
110 words
A rock like decorative assembly including (a) a plurality of irregularly shaped shells of at least one form, each having side walls and a top wall, (b) the outer surfaces of all said shells being mottled, (c) at least one integral first connector means formed on the inside of the top wall of each of said shells, (d) one integral second connector means formed on the outside of the top wall of at least one of said shells, (e) said first and second connector means being mateable to removably connect vertically juxtaposed shells into a rock-like formation, (f) said formation having varying appearances depending on the choice of shell form.
Claim 2
Dependent Claim
110 words
A rock like decorative assembly including (a) a plurality of irregularly shaped shells of at least one form, each having side walls and a top wall, (b) the outer surfaces of all said shells being mottled, (c) at least one integral first connector means formed on the inside of the top wall of each of said shells, (d) one integral second connector means formed on the outside of the top wall of at least one of said shells, (e) said first and second connector means being mateable to removably connect vertically juxtaposed shells into a rock-like formation, (f) said formation having varying appearances depending on the choice of shell form.
Claim 3
Dependent Claim
27 words
A rock-like decorative assembly in accordance with claim 1 in which each of said shells is thermoformed from a material having a specific gravity greater than 1.0.
Claim 4
Dependent Claim
24 words
A rock-like decorative assembly in accordance with claim 2 in which said material comprises a non-homogeneous mixture of approximately 60% thermoplastic and 40% talc.
Claim 5
Dependent Claim
15 words
A rock-like decorative assembly in accordance with claim 3 in which said thermoplastic is polypropylene.
Claim 6
Dependent Claim
38 words
A rock-like decorative assembly in accordance with claim 1 in which said first connector means comprises a projecting hollow cylinder having an inner concentric cylindrical guide, said guide and said cylinder defining an annular socket of predetermined diameter.
Claim 7
Dependent Claim
57 words
A rock-like decorative assembly in accordance with claim 5 in which said second connector means comprises a hollow cylindrical pin of diameter substantially that of said socket, whereby said socket and said pin are telescopically engageable to connect said shells and to accommodate the attachment of one shell with respect to the other at any predetermined angle.
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) | 1985-03-08 | 1985-09-07 | 1986-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-03-08 | 1989-09-07 | 1990-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-03-08 | 1993-09-07 | 1994-03-09 | $7700.00 | Window Closed / Lapsed |