Cascadable modem apparatus

• US 5,864,467 A
• Filed: 02/12/1997
• Issued: 01/26/1999
• Est. Priority Date: 02/12/1997
• Status: Expired due to Fees

• Current Assignee: Paradyne Corporation (Dasan Networks Incorporated)
• Original Assignee: Paradyne Corporation (Dasan Networks Incorporated)
• Inventors: Georgopulos, Thomas, Recchia, Giovanni
• Primary Examiner(s): Picard, Leo P.
• Assistant Examiner(s): FOSTER, DAVID A
• Application Number:
  US08/799,573
• Time in Patent Office: 713 Days
• Field of Search: 361/732, 361/726, 361/744, 361/730, 361/801, 361/802, 361/756, 361/724, 361/735, 361/725, 174/52.1, 312/42, 220/23.4, 220/23.6, 220/23.2, 439/292, 439/717
• US Class Current: 361/732
• CPC Class Codes: H05K 5/0021 Side-by-side or stacked arrangements

Abstract

A cascadable modem apparatus includes a modem housing having a top and a bottom. A plurality of angled feet are attached to the housing bottom in cantilever fashion to define a distal portion of each foot. The feet serve both to support the modem on an platform as well as to attach the modem to a similarly configured, adjacent modem assembly. In the preferred embodiment, a plurality of receiving slots are defined in the housing top and are correspondingly disposed to receive the distal portions of a plurality of angled feet from an adjacent modem housing. In this way, insertion of the distal portions of the feet snugly into the receiving slots of an adjacent modem effectively attaches the two adjacent modem assemblies. Preferably, a resilient locking tab is attached to the housing bottom in cantilever fashion to define a distal portion directed away from the housing bottom. As a result, the tab is responsive to force applied to the distal portion to flex inwardly toward the housing bottom. A raised portion on the housing top is configured to engage a locking tab from an adjacent modem housing, flex the tab inwardly as the two adjacent modem housings are interconnected, and captively engage the locking tab when the two modem housings are aligned, to effectively interlock the two adjacent modem housings.

Claims

1. A cascadable data communication equipment (DCE) apparatus comprising:

a housing having a top and a bottom;

a plurality of angled feet attached to the housing bottom in cantilever fashion to define a distal portion of each foot;

a plurality of receiving slots defined in the housing top and disposed to receive the distal portions of a plurality of angled feet from an adjacent housing;

a resilient locking tab attached to the housing bottom in cantilever fashion to define a distal portion directed away from the housing bottom, the tab being responsive to force applied to the distal portion to flex inwardly toward the housing bottom;

a raised portion on the housing top configured to engage a locking tab from an adjacent housing and interlock the two adjacent housings.

2. The cascadable apparatus as defined in claim 1, wherein the raised portion is configured to operatively engage and flex the locking tab as the two adjacent housings are slid relatively to each other while juxtaposed.

3. The cascadable apparatus as defined in claim 1, wherein the receiving slots are configured to releasably engage the distal portions of the angled feet as the feet are slid into the receiving slots while the housing are juxtaposed.

4. The cascadable apparatus as defined in claim 1 further including at least one guide for facilitating sliding engagement between the two adjacent housings.

5. The cascadable apparatus as defined in claim 4, wherein the at least one guide includes cooperatively disposed portions on the housing top and housing bottom.

6. The cascadable apparatus as defined in claim 5, wherein the portions include a channel portion disposed on the housing bottom and a raised rib portion disposed on the housing top, wherein the raised rib portion is slidably engaged by a channel portion of an adjacently disposed housing.

7. The cascadable apparatus as defined in claim 6, further including two channel portions on the housing bottom and two correspondingly disposed raised rib portions disposed on the housing top.

8. The cascadable apparatus as defined in claim 1, wherein the DCE apparatus includes at least one apparatus from the group consisting of:

a modem;

a digital service unit.

20. The cascadable apparatus as defined in claim 6, further including two channel portions on the housing bottom and two correspondingly disposed raised rib portions disposed on the housing top.

9. A cascadable data communication equipment (DCE) apparatus comprising:

a housing having a top and a bottom;

a plurality of feet attached to the housing bottom, each foot defining a freestanding distal portion;

feet engaging means disposed in the housing top for releasably engaging the distal portion of the plurality of feet of an adjacent housing; and

locking means associated with the housing for releasably interlocking two aligned and adjacently disposed housings.

10. The cascadable apparatus as defined in claim 9, wherein the feet engaging means includes a plurality of receiving slots defined in the housing top.

11. The cascadable apparatus as defined in claim 9, wherein the locking means includes a resilient locking tab attached to the housing bottom in cantilever fashion to define a distal portion directed away from the housing bottom, the tab being responsive to force applied to the distal portion to flex inwardly toward the housing bottom.

12. The cascadable apparatus as defined in claim 11, wherein the locking means further includes a raised portion on the housing top configured to engage a locking tab from an adjacent housing and to form an interference fit when the adjacent housings are brought into aligned, adjacent engagement.

13. The cascadable apparatus according to claim 9, wherein the locking means includes a press-fit engagement formed between the feet and feet engaging means.

14. The cascadable apparatus according to claim 9, wherein the distal portion of the plurality of feet are offset from the housing bottom.

15. The cascadable apparatus according to claim 14, wherein the feet engaging means includes a plurality of receiving slots defined in the housing top.

16. The cascadable apparatus according to claim 15, wherein the receiving slots align with the offset distal portions.

17. The cascadable apparatus according to claim 9, further including at least one guide for facilitating sliding engagement between the two adjacent housings.

18. The cascadable apparatus as defined in claim 17, wherein the at least one guide includes cooperatively disposed portions on the housing top and housing bottom.

19. The cascadable apparatus as defined in claim 18, wherein the portions include a channel portion disposed on the housing bottom and a raised rib portion disposed on the housing top, wherein the raised rib portion is slidably engaged by a channel portion of an adjacently disposed housing.

21. A cascadable apparatus comprising:

a housing having a top and a bottom;

a plurality of angled feet attached to the housing in cantilever fashion to define a distal portion of each foot, wherein the distal portion projects below the housing bottom; and

means attached to the housing for releasably engaging the distal portion of the feet;

whereby two adjacent housings are releasably held in fixed relation.

22. The cascadable apparatus as defined in claim 21, wherein the feet are attached to the housing bottom.

23. The cascadable apparatus as defined in claim 21, wherein the feet are attached attached to sides of the housing.

24. The cascadable apparatus as defined in claim 21, wherein the DCE apparatus include at least one apparatus selected from the group consisting of:

a modem; and