US3814357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steel spring insulator
Assignee: IT- ISOLIER- TECHNIK und SCHALLSCHUTA GmbH
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Filing: 1971-04-21
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Granted: 1974-06-04
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Expires: 1991-04-21
Abstract
Abstract A steel spring insulator, to enable machines or sets of machinery, particularly fans, ventilators, blowers etc., to be installed in such a way that they will be insulated from vibrations and protected from sound conducted through solids, the said insulator comprising a lower portion firmly affixed to the bearing surface of a foundation or a supporting structure, and an upper portion affixed underneath the base of the machine or set of machinery or underneath a bearer thereof, at least one steel helical compression spring being provided between the said two portions and being surrounded by the upper and/or lower portion on all sides and with ample clearance, at least one connecting element being provided which interconnects the upper and the lower portion and keeps the compression spring in a prestressed state, wherein the connecting element consists of at least one flexible traction means which is affixed by one end portion to the lower part and by the other end portion to the upper part and of which the length is such that when the insulator is not subjected to a load the traction means is loaded and the compression spring is slightly prestressed, said traction means being relieved of its load and hanging loosely not later than when the insulator has reached its minimum permissible loading.
Inventors
- 👤 P Rontgen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:15
CPC Classifications
F; F16; F16F; F16F1/00; F16F1/02; F16F1/04; F16F1/12; F16F1/128
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
212 words
A spring insulator for mounting machines, particularly fans, ventilators, blowers and the like, in a vibration and sound insulating manner, said insulator comprising a lower pot-shaped member having an upper open end and a lower closed end adapted to be fixed to a floor; an upper pot-shaped member having a lower open end and an upper closed end adapted to be connected to a machine to be mounted, each of said members having a peripheral wall, one of which surrounds the other with ample clearance; at least one compression spring abutting with opposite ends against the closed ends of said members so as to hold said members axially out of contact with each other, said spring being surrounded by the peripheral walls of said members spaced with ample clearance therefrom; and at least one flexible connecting element connected at opposite ends to said upper and lower member, respectively, said connecting element having a length such that when said insulator is not loaded, said connecting element is stressed and said spring maintained in pre-stressed condition, and said connecting element being relieved of its stress and hanging loosely after application of a load to said upper part, said spring and said connecting element forming the only connection between said upper and said lower member.
Claim 2
Dependent Claim
212 words
A spring insulator for mounting machines, particularly fans, ventilators, blowers and the like, in a vibration and sound insulating manner, said insulator comprising a lower pot-shaped member having an upper open end and a lower closed end adapted to be fixed to a floor; an upper pot-shaped member having a lower open end and an upper closed end adapted to be connected to a machine to be mounted, each of said members having a peripheral wall, one of which surrounds the other with ample clearance; at least one compression spring abutting with opposite ends against the closed ends of said members so as to hold said members axially out of contact with each other, said spring being surrounded by the peripheral walls of said members spaced with ample clearance therefrom; and at least one flexible connecting element connected at opposite ends to said upper and lower member, respectively, said connecting element having a length such that when said insulator is not loaded, said connecting element is stressed and said spring maintained in pre-stressed condition, and said connecting element being relieved of its stress and hanging loosely after application of a load to said upper part, said spring and said connecting element forming the only connection between said upper and said lower member.
Claim 3
Dependent Claim
18 words
A spring insulator as defined in claim 1, wherein said compression spring is a helical steel compression spring.
Claim 4
Dependent Claim
25 words
A spring insulator as defined in claim 1, wherein the peripheral wall of said upper member partly surrounds the peripheral wall of said lower member.
Claim 5
Dependent Claim
97 words
A spring insulator as defined in claim 3, wherein said lower member has an annular flange radially projecting from the closed lower end thereof, wherein the peripheral wall of each of said members has a free end edge, and wherein said compression spring is constructed to maintain, during loading of said insulator with a maximum permissible load, the end edge of the peripheral wall of said upper member out of contact with said flange and the end edge of the peripheral wall of said lower member out of contact with said closed end of said upper member.
Claim 6
Dependent Claim
37 words
A spring insulator as defined in claim 2, wherein only one flexible connecting element is provided for each helical compression spring and is arranged coaxially with said helical compression spring passing through the center of the latter.
Claim 7
Dependent Claim
17 words
A spring insulator as defined in claim 1, wherein said connecting element consists of a metal chain.
Claim 8
Dependent Claim
21 words
A spring insulator as defined in claim 6, wherein said metal chain is constituted by a welded link-type chain of steel.
Claim 9
Dependent Claim
16 words
A spring insulator as defined in claim 1, wherein said connecting element consists of a cable.
Claim 10
Dependent Claim
15 words
A spring insulator as defined in claim 8, wherein said cable is a steel cable.
Claim 11
Dependent Claim
16 words
A spring insulator as defined in claim 1, wherein said connecting element is made of plastic.
Claim 12
Dependent Claim
22 words
A spring insulator as defined in claim 1, wherein said connecting element is detachably affixed to at least one of said members.
Claim 13
Dependent Claim
43 words
A spring insulator as defined in claim 1, and including a mounting and guiding ring sandwiched between at least one end of said spring and the closed end of the corresponding member, said ring being made from a material having sound damping properties.
Claim 14
Dependent Claim
26 words
A spring insulator as defined in claim 12, wherein said material of said ring is taken from the group of materials consisting of rubber and plastics.
Claim 15
Dependent Claim
31 words
A spring insulator as defined in claim 1, wherein at least one of said members is provided with a device for adjusting the height of the bearing surface of the insulator.
Claim 16
Dependent Claim
31 words
A spring insulator as defined in claim 1, wherein at least one of said members consists of an oil-petrol-acid resisting synthetic material having a considerably tenacity and being resistant to abrasion.
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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) | 1977-06-03 | 1977-12-03 | 1978-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-03 | 1981-12-03 | 1982-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-03 | 1985-12-03 | 1986-06-04 | $7700.00 | Window Closed / Lapsed |