US4049484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum transfer head and method of use
Assignee: Johnson Matthey PLC
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Filing: 1975-09-08
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Granted: 1977-09-20
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Expires: 1995-09-08
Abstract
Abstract This invention relates to the handling of transfers or decalcomanias. In particular the invention is concerned with a vacuum head for use in conjunction with the apparatus described and claimed in our U.S. patent application Ser. No. 349,188, and comprises a device for handling transfers comprising a hollow body having a perforate or porous face, a layer of perforate or porous resilient material applied to the said face and a pipe connection for connecting the device to a source of suction.
Inventors
- 👤 John Garrick Priest
- 👤 Robert Barry Tooth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:50
CPC Classifications
B; B44; B44C; B44C1/00; B44C1/16; B44C1/165; B44C1/17; B44C1/1712; B65; B65H; B65H3/00; B65H3/08; B65H3/0808; B65H3/0883; B65H5/00; B65H5/22; B65H5/222; Y; Y10; Y10T; Y10T156/00; Y10T156/17; Y10T156/1702; Y10T156/1744; Y10T156/1776; Y10T156/1778
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
59 words
A vacuum head for handling transfers comprising a hollow body having a perforate or porous face, a pipe connection for connecting the hollow body to a source of suction, a layer of perforate or porous heat insulating material applied to the said face and a layer of porous resilient foam material applied to the layer of heat insulating material.
Claim 2
Dependent Claim
59 words
A vacuum head for handling transfers comprising a hollow body having a perforate or porous face, a pipe connection for connecting the hollow body to a source of suction, a layer of perforate or porous heat insulating material applied to the said face and a layer of porous resilient foam material applied to the layer of heat insulating material.
Claim 3
Dependent Claim
16 words
A vacuum head according to claim 1, wherein the said resilient material possesses heat insulating characteristics.
Claim 4
Dependent Claim
17 words
A vacuum head according to claim 2, wherein the said resilient material is a polyurethane foam rubber.
Claim 5
Dependent Claim
29 words
A vacuum head according to claim 3, wherein the layer of heat insulating material is made from synthetic rubber, natural rubber, blotting paper, loose textured fabrics, felt or cork.
Claim 6
Dependent Claim
20 words
A vacuum head according to claim 1 wherein said layer of perforate or porous heat insulating material is resilient material.
Claim 7
Independent Claim
141 words
A method of handling transfers comprising the steps of bringing a vacuum head into contact with the transfers, the vacuum head comprising a hollow body having a perforate or porous face and a pipe connection for connecting the hollowing body to a source of suction, a first layer of perforate or porous heat insulating and resilient material applied to said face and a second layer of porous resilient foam material applied to the first layer, picking up a transfer with said vacuum head by bringing the second layer into contact with the transfer and applying suction from said source to said hollow body, activating said transfer by exposing it to an external source of heat, and releasing said transfer onto an article by bringing said head into contact with the article and terminating the application of suction to said hollow body.
Claim 8
Independent Claim
141 words
A method of handling transfers comprising the steps of bringing a vacuum head into contact with the transfers, the vacuum head comprising a hollow body having a perforate or porous face and a pipe connection for connecting the hollowing body to a source of suction, a first layer of perforate or porous heat insulating and resilient material applied to said face and a second layer of porous resilient foam material applied to the first layer, picking up a transfer with said vacuum head by bringing the second layer into contact with the transfer and applying suction from said source to said hollow body, activating said transfer by exposing it to an external source of heat, and releasing said transfer onto an article by bringing said head into contact with the article and terminating the application of suction to said hollow body.
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) | 1980-09-19 | 1981-03-21 | 1981-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-19 | 1985-03-21 | 1985-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-19 | 1989-03-21 | 1989-09-20 | $7700.00 | Window Closed / Lapsed |