US3729147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsible shaft for paint spray booth
Assignee: Individual
•
Filing: 1970-09-28
•
Granted: 1973-04-24
•
Expires: 1990-09-28
Abstract
Abstract The invention resides in the particular combination and arrangement of elements and especially in the provision of an improved structure having a single, co-extending drive shaft and a single shiftable member to collapse the device, so that it may more easily be removed from a roll of paint laden material.
Inventors
- 👤 S Hardy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:22
CPC Classifications
B; B05; B05B; B05B14/00; B05B14/40; B05B14/43; Y; Y10; Y10S; Y10S55/00; Y10S55/46
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
79 words
A device for collecting a disposable spray booth curtain, comprising a pair of elongated channel members, one of which is receivable in the other, a drive shaft co-extensive with said channel members, plates welded to one of said channel members and to said shaft, means to hold, one of said channel members spaced from the other, and means to shift said last named channel member longitudinally to release said member from said holding means whereby to collapse the device.
Claim 2
Independent Claim
79 words
A device for collecting a disposable spray booth curtain, comprising a pair of elongated channel members, one of which is receivable in the other, a drive shaft co-extensive with said channel members, plates welded to one of said channel members and to said shaft, means to hold, one of said channel members spaced from the other, and means to shift said last named channel member longitudinally to release said member from said holding means whereby to collapse the device.
Claim 3
Dependent Claim
58 words
The structure of cliam 1, in which one of said channel members is provided with an inverted channel member, the sides of of which are welded to the sides of said channel members and to the bottom of which boxes in said drive shaft and is receivable on said holding means when said device is in non-collapsed condition.
Claim 4
Dependent Claim
58 words
The structure of cliam 1, in which one of said channel members is provided with an inverted channel member, the sides of of which are welded to the sides of said channel members and to the bottom of which boxes in said drive shaft and is receivable on said holding means when said device is in non-collapsed condition.
Claim 5
Dependent Claim
28 words
The structure of claim 1, in which said holding means consist of at least one plate member welded to the inside face of the said receiving channel member.
Claim 6
Dependent Claim
35 words
The sTructure of claim 1, in which said receiving channel member is provided with a plate member arranged to contact elements carried on said received channel to limit the relative longitudinal movement between said channels.
Claim 7
Dependent Claim
45 words
The structure of claim 1, in which said shaft is provided with bearings at positions beyond the ends of said channels, means to support said bearings and at least one key way on said shaft arranged to receive the key of a power drive source.
Claim 8
Dependent Claim
41 words
The structure of claim 1, in which said channel members are normally held in spaced, parallel relation about said shaft and arranged to receive thereon paint laden portions of a disposable curtain which forms one wall of a paint spray booth.
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) | 1976-04-23 | 1976-10-23 | 1977-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-23 | 1980-10-23 | 1981-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-23 | 1984-10-23 | 1985-04-24 | $7700.00 | Window Closed / Lapsed |