← Back to Patent Explorer
US3552548A Expired / Lapsed US ⏱️ 0.0 years remaining

Wafer storage and shipping container

Assignee: Fluoroware Inc
•
Filing: 1968-08-05
•
Granted: 1971-01-05
•
Expires: 1988-08-05
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A housing having a generally circular cross section with a wafer-receiving cavity therein and an opening having an inner dimension larger than the peripheral dimension of the wafer, an inner surface of said cavity which tapers inwardly from the outer edges thereof generally toward the center and away from the opening so that only the outermost edges of the wafer touch the sides of the cavity, a spring having a generally semispherical shape positioned above the wafer to engage only the edges thereof and a cover or a similar housing affixed over the opening of the cavity in sealing engagement in abutting relationship with the central portion of the spring to hold the wafer relatively immovable.

Inventors

  • 👤 Victor C Wallestad
  • 👤 Joel A Elftmann

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 20:48
CPC Classifications
H; H10; H10P; H10P72/00; H10P72/10; H10P72/19; H10P72/1922; B; B65; B65D; B65D25/00; B65D25/02; B65D25/10; B65D85/00; B65D85/62

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 190 words
A wafer storage and shipping container comprising: a. a housing having a wafer receiving cavity therein with an opening having inner dimensions larger than the peripheral dimensions of a wafer to be positioned therein; b. said housing having an inner surface at least partially defining the cavity, which surface tapers inwardly from adjacent the opening toward substantially the center of said surface and away from the opening, for engaging a wafer only adjacent at least portions of the edges of said wafer; c. cover means engaged with said housing over the opening of the cavity to substantially close the opening; and d. spring means having a central portion with a plurality of legs radiating outwardly therefrom and having a generally arcuate cross section so that the central portion of said spring means bears against said cover means and said legs bear against the inner surface of said housing adjacent the ends of said legs with the spring means properly positioned in the container, said spring means being constructed of a size, relative to a wafer positioned in said container, for engaging the wafer only adjacent the edges of said wafer.
Claim 2
Dependent Claim 190 words
A wafer storage and shipping container comprising: a. a housing having a wafer receiving cavity therein with an opening having inner dimensions larger than the peripheral dimensions of a wafer to be positioned therein; b. said housing having an inner surface at least partially defining the cavity, which surface tapers inwardly from adjacent the opening toward substantially the center of said surface and away from the opening, for engaging a wafer only adjacent at least portions of the edges of said wafer; c. cover means engaged with said housing over the opening of the cavity to substantially close the opening; and d. spring means having a central portion with a plurality of legs radiating outwardly therefrom and having a generally arcuate cross section so that the central portion of said spring means bears against said cover means and said legs bear against the inner surface of said housing adjacent the ends of said legs with the spring means properly positioned in the container, said spring means being constructed of a size, relative to a wafer positioned in said container, for engaging the wafer only adjacent the edges of said wafer.
Claim 3
Dependent Claim 23 words
A wafer storage and shipping container as set forth in claim 1 wherein the spring means is constructed from a relatively resilient plastic.

References Cited (Backward Citations)

US856463A Cited
US2544095A Cited
US2645375A Cited
US2765950A Cited
US2940589A Cited
US3467242A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-01-04 1974-07-06 1975-01-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-01-04 1978-07-06 1979-01-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-01-04 1982-07-06 1983-01-05 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag