Patent US3704894A successfully refreshed from Google Patents.
US3704894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bellows sleeve
Assignee: Individual
•
Filing: 1971-11-01
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Granted: 1972-12-05
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Expires: 1991-11-01
Abstract
Abstract The bellows sleeve is provided with a slot extending at least partially and longitudinally there through. Adjacent to the slot there are provided flanges which comprise one or more tongues with a wedge shaped cross-section as well as wedge-shaped grooves into which the tongues fit. The flanges are clamped together, for example, by means of screws extending with a press fit through bores in respective material accumulations or lands provided in one of the flanges and respective recesses into which the lands fit in the other flange. Preferably, the lands fit into the recesses also with a press fit.
Inventors
- 👤 Wolfgang Didszuhn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:50
CPC Classifications
F; F16; F16J; F16J3/00; F16J3/04; F16J3/041; F16J3/045
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
144 words
In a bellows sleeve having a body made of elastic material, a longitudinal slot in said body extending at least partially along said sleeve, first and second flange means extending longitudinally along said slot and radially away from said sleeve body, said flange means having surfaces facing each other, sealing tongue and groove means forming part of said surfaces and arranged for cooperation with each other, as well as means for clamping said flanges together at spaced points along the flanges, the improvement comprising a wedge cross-sectional shape for said sealing tongue means intermediate said clamping means, a corresponding wedge shape for said sealing groove means also intermediate said clamping means, material accumulations at said spaced points forming part of one of said flange surface, and corresponding recesses forming part of the other of said flange surfaces at said points for receiving said accumulations.
Claim 2
Dependent Claim
144 words
In a bellows sleeve having a body made of elastic material, a longitudinal slot in said body extending at least partially along said sleeve, first and second flange means extending longitudinally along said slot and radially away from said sleeve body, said flange means having surfaces facing each other, sealing tongue and groove means forming part of said surfaces and arranged for cooperation with each other, as well as means for clamping said flanges together at spaced points along the flanges, the improvement comprising a wedge cross-sectional shape for said sealing tongue means intermediate said clamping means, a corresponding wedge shape for said sealing groove means also intermediate said clamping means, material accumulations at said spaced points forming part of one of said flange surface, and corresponding recesses forming part of the other of said flange surfaces at said points for receiving said accumulations.
Claim 3
Dependent Claim
27 words
The bellows sleeve according to claim 1, comprising two wedge shaped tongues and two respective wedge shaped grooves in said flange surfaces for cooperation with each other.
Claim 4
Dependent Claim
71 words
The bellows sleeve according to claim 1, wherein said clamping means comprise screw means, a bore through each of said material accumulations and through the flange in register with the respective recesses, said bore receiving a respective one of said screw means with a press fit, said material accumulations and respective recess having a sealing improving shape such that each accumulation fits with a light press fit into the respective recess.
Claim 5
Dependent Claim
21 words
The bellows sleeve according to claim 3, wherein said material accumulation and the respective recess have a cylindrical sealing improving shape.
Claim 6
Dependent Claim
21 words
The bellows sleeve according the claim 3, wherein saId material accumulation and the respective recess have a rectangular sealing improving shape.
Claim 7
Dependent Claim
21 words
The bellows sleeve according the claim 3, wherein said material accumulation and the respective recess has a trapezoidal sealing improving shape.
Claim 8
Dependent Claim
19 words
The bellows sleeve according to claim 6, wherein at least two opposite surfaces of said trapezoidal shape are curved.
Claim 9
Dependent Claim
25 words
The bellows sleeve according to claim 3, where said material accumulation has a height above the respective flange surface which is higher than the tongue.
Claim 10
Dependent Claim
41 words
The bellows sleeve according to claim 1, wherein said tongue and material accumulations form part of the surface of one of the flanges, and wherein the groove and the recesses are formed in the surface of the other of said flanges.
Claim 11
Dependent Claim
33 words
The bellows sleeve according to claim 9, wherein said flange which comprises said tongue and material accumulations has a wall thickness thinner than that of the flange which comprises said groove and recesses.
Claim 12
Dependent Claim
30 words
The bellows sleeve according to claim 1, wherein said material accumulations and said recesses comprise back-tapers whereby a snap-in action between the material accumulation and the respective recess is accomplished.
Claim 13
Dependent Claim
26 words
The bellows sleeve according to claim 1, wherein said tongue and groove as well as said material accumulations and recesses are arranged along a continuous line.
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) | 1975-12-05 | 1976-06-05 | 1976-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-05 | 1980-06-05 | 1980-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-05 | 1984-06-05 | 1984-12-05 | $7700.00 | Window Closed / Lapsed |