US3727949A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hose construction
Assignee: Dayco Products LLC
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Filing: 1971-12-20
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Granted: 1973-04-17
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Expires: 1991-12-20
Abstract
Abstract An elongated hose construction is provided which is particularly adapted for use on a vacuum cleaner. The hose construction comprises a hose having a plurality of integral convolutions which give the hose optimum flexibility and at least one convolution comprising one end portion of the hose is used to attach a simple, inexpensive fitting thereto in a substantially air tight manner.
Inventors
- 👤 H Holden
- 👤 D Kleykamp
- 👤 P Neroni
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:53
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/24; F; F16; F16L; F16L25/00; F16L25/0036; F16L27/00; F16L27/08; F16L27/0804; F16L27/0808; F16L27/0812; F16L33/00; F16L33/24; F16L33/30; Y; Y10; Y10S; Y10S285/00; Y10S285/903; Y10S285/921
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
173 words
In combination: a continuous differential pressure formed elongated flexible hose made of an elastomeric material and having a plurality of convolutions provided as an integral part thereof, said hose having an inside diameter and said plurality of convolutions defining a corresponding number of axially spaced annular enlargements in said inside diameter, and a tubular fitting having an inner end portion received within said hose and provided with a first radially extending annular projection within an associated annular enlargement connecting said fitting to said hose, and providing a substantially fluid-tight seal therebetween by engaging at least one of said convolutions while permitting relative rotation of said hose and fitting but preventing relative axial movement therebetween; said fitting also having a second radially extending annular projection spaced from said first-named projection and being positioned within said hose so that the associated end portion of said hose has certain convolutions axially compressed between said projections, the associated end of said hose engaging said second projection and providing another fluid-tight seal between said hose and said fitting.
Claim 2
Dependent Claim
173 words
In combination: a continuous differential pressure formed elongated flexible hose made of an elastomeric material and having a plurality of convolutions provided as an integral part thereof, said hose having an inside diameter and said plurality of convolutions defining a corresponding number of axially spaced annular enlargements in said inside diameter, and a tubular fitting having an inner end portion received within said hose and provided with a first radially extending annular projection within an associated annular enlargement connecting said fitting to said hose, and providing a substantially fluid-tight seal therebetween by engaging at least one of said convolutions while permitting relative rotation of said hose and fitting but preventing relative axial movement therebetween; said fitting also having a second radially extending annular projection spaced from said first-named projection and being positioned within said hose so that the associated end portion of said hose has certain convolutions axially compressed between said projections, the associated end of said hose engaging said second projection and providing another fluid-tight seal between said hose and said fitting.
Claim 3
Dependent Claim
156 words
A hose construction comprising, an elongated flexible hose having an inside diameter and having a plurality of axially spaced annular convolutions provided as an integral part thereof, said plurality of convolutions defining a corresponding number of axially spaced annular enlargements in said inside diameter, and a tubular fitting having an inner end portion received within said hose and having a first radially extending annular projection, said projection being received within an associated annular enlargement to allow relative rotation yet prevent axial movement between said hose and said fitting while providing a substantially air-tight seal therebetween; said fitting having a second radially extending annular projection spaced from said first-named projection and being inserted within said tubular member so that the associated end portion of said hose has certain outer convolutions axially compressed between said projections, the outer end of said hose engaging said second projection and providing another substantially air-tight seal between said hose and said fitting.
Claim 4
Dependent Claim
156 words
A hose construction comprising, an elongated flexible hose having an inside diameter and having a plurality of axially spaced annular convolutions provided as an integral part thereof, said plurality of convolutions defining a corresponding number of axially spaced annular enlargements in said inside diameter, and a tubular fitting having an inner end portion received within said hose and having a first radially extending annular projection, said projection being received within an associated annular enlargement to allow relative rotation yet prevent axial movement between said hose and said fitting while providing a substantially air-tight seal therebetween; said fitting having a second radially extending annular projection spaced from said first-named projection and being inserted within said tubular member so that the associated end portion of said hose has certain outer convolutions axially compressed between said projections, the outer end of said hose engaging said second projection and providing another substantially air-tight seal between said hose and said fitting.
Claim 5
Dependent Claim
76 words
A hose construction as set forth in claim 2 in which said first-named projection has a sloping forward surface portion which slopes from said terminal end toward the outer end of said fitting, said sloping forward surface portion serving as a cam for radially expanding cylindrical portions of said hose interconnecting each pair of adjacent convolutions comprising said axially compressed convolutions and allowing said first-named projection to pass easily therethrough and into an associated annular enlargement.
Claim 6
Dependent Claim
49 words
A hose construction as set forth in claim 3 in which said second projection has a planar annular surface which coincides with a plane arranged substantially perpendicular to the longitudinal axis through said hose, said planar annular surface assuring positive sealing of said outer end of said hose thereagainst.
Claim 7
Dependent Claim
20 words
A hose construction as set forth in claim 4, in whicH said hose comprises a single thickness of plastic material.
Claim 8
Dependent Claim
19 words
A hose construction as set forth in claim 5 in which said fitting comprises a comparatively rigid nonmetallic material.
Claim 9
Dependent Claim
19 words
A hose construction as set forth in claim 5 in which said fitting comprises a comparatively rigid metallic material.
Claim 10
Dependent Claim
166 words
A hose construction comprising an elongated flexible hose and a tubular fitting received within one end thereof; said hose being made of a resilient plastic material having an integral cylindrical sleeve defining one end portion thereof and a plurality of integrally axially spaced annular convolutions; said fitting being in the form of a wand having a radially extending annular projection mounted within said hose and received within one of said convolutions, said projection allowing relative rotation between said hose and said fitting while providing a substantially air-tight seal therebetween yet preventing axial movement between said hose and fitting, said annular projection having a forward surface portion sloping from one inner end portion toward the outer end of said fitting and having a hooking rearward surface portion which engages a portion of the convolutions to hold said fitting within said hose, said sloping forward surface portion serving as a cam for radially expanding said sleeve and permitting said projection to pass into a convolution adjacent said sleeve.
Claim 11
Dependent Claim
166 words
A hose construction comprising an elongated flexible hose and a tubular fitting received within one end thereof; said hose being made of a resilient plastic material having an integral cylindrical sleeve defining one end portion thereof and a plurality of integrally axially spaced annular convolutions; said fitting being in the form of a wand having a radially extending annular projection mounted within said hose and received within one of said convolutions, said projection allowing relative rotation between said hose and said fitting while providing a substantially air-tight seal therebetween yet preventing axial movement between said hose and fitting, said annular projection having a forward surface portion sloping from one inner end portion toward the outer end of said fitting and having a hooking rearward surface portion which engages a portion of the convolutions to hold said fitting within said hose, said sloping forward surface portion serving as a cam for radially expanding said sleeve and permitting said projection to pass into a convolution adjacent said sleeve.
Claim 12
Dependent Claim
20 words
A hose construction as set forth in claim 8 in which said sloping forward surface portion has an arcuate configuration.
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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) | 1976-04-16 | 1976-10-16 | 1977-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-16 | 1980-10-16 | 1981-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-16 | 1984-10-16 | 1985-04-17 | $7700.00 | Window Closed / Lapsed |